RADIATION AND LIFE MODULE P2
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The document discusses ultraviolet (UV) radiation from the sun. It notes that UV radiation is found in sunlight and is a form of electromagnetic radiation with shorter wavelengths than visible light. While UV radiation can be beneficial in moderating amounts, overexposure can cause skin cancer and other health issues. The document provides information on sources of UV radiation besides the sun, as well as the effects of UV on the ozone layer and how to reduce risks from UV exposure like sunburn and skin cancer.
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About Radiation And Life
The document discusses ultraviolet (UV) radiation from the sun. It notes that UV radiation is found in sunlight and is a form of electromagnetic radiation with shorter wavelengths than visible light. While UV radiation can be beneficial in moderation, overexposure can cause skin cancer and other health effects. The document provides information on sources of UV radiation besides the sun, as well as the risks of binge sunbathing. It also discusses the ozone layer and its role in absorbing UV radiation.
Lighting pollution
As modern environmentalists, naturalists, and medical researchers consider light pollution to be one of the fastest growing and most pervasive forms of environmental pollution; this PPT has been prepared primarily with an intent to create an awareness amongst the architect fraternity.
Newsletter the ozone
The ozone layer protects life on Earth by absorbing harmful ultraviolet radiation from the sun. It was discovered in 1913 and is located in the lower stratosphere. Ozone depletion is caused by chemicals like CFCs and nitrous oxide released by human activities that break down ozone molecules. In the 1970s, scientists noticed the ozone layer over Antarctica thinning each spring. International agreements banned CFCs in 1979 but it will take decades for their amounts in the atmosphere to reduce as they rise slowly to the stratosphere. Individual actions like encouraging car air conditioner maintenance and sun protection can help address the problem along with policy changes.
Light pollution portugal grece
Le but de cette prรฉsentation รฉtait de sensibiliser les รฉlรจves et leurs professeurs sur les effets de la pollution lumineuse sur l'environnement et sur l'observation astronomique.
Light pollution
About the pollution caused due to light across the world and it seems to be our very basic need of our life.
Light Pollution by sophia perez
Light pollution occurs when excess artificial light illuminates the night sky, making it difficult to see stars and increasing energy waste. It is caused by sources like street lights that emit light upwards and result in air glow over cities. Some ways to reduce light pollution include using light shields to point lights downward more efficiently, using red lights for activities like star gazing, and turning off unnecessary lights.
Light pollution
This document discusses the topic of light pollution. It begins with an introduction that defines light pollution and describes how artificial light at night scatters in the atmosphere, degrading views of the night sky. It then discusses the different types of light pollution including sky glow, glare, light trespass, and overlighting. The causes of light pollution are listed as excessive and unnecessary use of outdoor lighting along with improper lighting fixtures and designs. The effects of light pollution are outlined as negative impacts on human health, disruption to nocturnal wildlife, and effects on flora. The document concludes with recommendations for mitigation of light pollution through improved lighting fixtures and light sources that direct light downward rather than polluting the night sky.
Light pollution
Excessive artificial light at night can cause light pollution through light scattering in the atmosphere, glare, light trespass onto unintended areas, over-illumination, and skyglow. Light pollution disrupts wildlife behaviors like foraging, navigation, and predator avoidance, leading to increased mortality and decreased populations and body weight. It also negatively impacts humans by reducing vision, disrupting circadian rhythms, and decreasing melatonin production, potentially causing health issues. Additionally, light pollution contributes to energy waste, global warming through fossil fuel emissions, and increased air pollution by reducing atmospheric cleaning. The solution involves using efficient, directed outdoor lighting and educating the public.
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About Radiation And Life
The document discusses ultraviolet (UV) radiation from the sun. It notes that UV radiation is found in sunlight and is a form of electromagnetic radiation with shorter wavelengths than visible light. While UV radiation can be beneficial in moderation, overexposure can cause skin cancer and other health effects. The document provides information on sources of UV radiation besides the sun, as well as the risks of binge sunbathing. It also discusses the ozone layer and its role in absorbing UV radiation.
Lighting pollution
As modern environmentalists, naturalists, and medical researchers consider light pollution to be one of the fastest growing and most pervasive forms of environmental pollution; this PPT has been prepared primarily with an intent to create an awareness amongst the architect fraternity.
Newsletter the ozone
The ozone layer protects life on Earth by absorbing harmful ultraviolet radiation from the sun. It was discovered in 1913 and is located in the lower stratosphere. Ozone depletion is caused by chemicals like CFCs and nitrous oxide released by human activities that break down ozone molecules. In the 1970s, scientists noticed the ozone layer over Antarctica thinning each spring. International agreements banned CFCs in 1979 but it will take decades for their amounts in the atmosphere to reduce as they rise slowly to the stratosphere. Individual actions like encouraging car air conditioner maintenance and sun protection can help address the problem along with policy changes.
Light pollution portugal grece
Le but de cette prรฉsentation รฉtait de sensibiliser les รฉlรจves et leurs professeurs sur les effets de la pollution lumineuse sur l'environnement et sur l'observation astronomique.
Light pollution
About the pollution caused due to light across the world and it seems to be our very basic need of our life.
Light Pollution by sophia perez
Light pollution occurs when excess artificial light illuminates the night sky, making it difficult to see stars and increasing energy waste. It is caused by sources like street lights that emit light upwards and result in air glow over cities. Some ways to reduce light pollution include using light shields to point lights downward more efficiently, using red lights for activities like star gazing, and turning off unnecessary lights.
Light pollution
This document discusses the topic of light pollution. It begins with an introduction that defines light pollution and describes how artificial light at night scatters in the atmosphere, degrading views of the night sky. It then discusses the different types of light pollution including sky glow, glare, light trespass, and overlighting. The causes of light pollution are listed as excessive and unnecessary use of outdoor lighting along with improper lighting fixtures and designs. The effects of light pollution are outlined as negative impacts on human health, disruption to nocturnal wildlife, and effects on flora. The document concludes with recommendations for mitigation of light pollution through improved lighting fixtures and light sources that direct light downward rather than polluting the night sky.
Light pollution
Excessive artificial light at night can cause light pollution through light scattering in the atmosphere, glare, light trespass onto unintended areas, over-illumination, and skyglow. Light pollution disrupts wildlife behaviors like foraging, navigation, and predator avoidance, leading to increased mortality and decreased populations and body weight. It also negatively impacts humans by reducing vision, disrupting circadian rhythms, and decreasing melatonin production, potentially causing health issues. Additionally, light pollution contributes to energy waste, global warming through fossil fuel emissions, and increased air pollution by reducing atmospheric cleaning. The solution involves using efficient, directed outdoor lighting and educating the public.
The ozone layer
The document discusses the ozone layer, including what it is, where it is located, and why it is important for life on Earth. It protects the Earth from harmful ultraviolet radiation from the sun. The ozone layer is being affected by human emissions of chlorofluorocarbons (CFCs), which are destroying the ozone. This is leading to thinning of the ozone layer and the formation of an ozone hole over Antarctica. The consequences of ozone depletion include increased skin cancer risks and other health impacts. Humans can help protect themselves from UV radiation by wearing sunscreen, hats, and sunglasses when outside.
Presentation1.pptx and so on and so forth
Ultraviolet (UV) rays come from the sun and other sources like tanning beds. There are different types of UV rays based on their energy levels, with higher-energy rays being more damaging. UV rays are mainly absorbed by skin and can cause sunburn, skin damage, and skin cancer over time. People are exposed to UV rays from the sun as well as some artificial sources. While UV rays have some benefits, overexposure is best avoided through clothing, sunscreen, and limiting time in the sun or tanning beds.
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The document discusses the visible light spectrum and ultraviolet radiation. It begins by explaining that white light is made up of the colors from red to violet in the visible spectrum. It then provides several examples of applications that use visible light, such as fiber optics, photography, and photosynthesis. The document goes on to discuss ultraviolet radiation, which has shorter wavelengths than visible light. It describes an activity using sunscreen to block UV rays and their effects. Finally, it details the different types of UV radiation and some of their uses and health impacts.
Ozone layer depletion 2 arjun
The document discusses the depletion of the ozone layer and its effects. It notes that the ozone layer protects life from harmful UV rays. The release of chlorofluorocarbons into the atmosphere from products like refrigerators and air conditioners has led to ozone depletion by releasing chlorine that destroys ozone molecules. This ozone thinning allows more UV rays to pass through and negatively impact both human health and ecosystems. Recommendations are provided to protect against UV exposure.
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The ozone layer absorbs 93-99% of harmful ultraviolet (UV) light from the sun, protecting life on Earth. Over 91% of the ozone is found in the stratosphere. UV radiation can cause sunburn, skin cancer, eye disease, and weaken the immune system. With decreasing ozone levels over New Zealand since the 1970s, and the country's lack of air pollution to block UV rays, New Zealanders receive more UV exposure. This increases health risks like skin cancer, so it is important to take precautions like applying sunscreen, wearing protective clothing and hats, and limiting time in the sun during peak UV hours.
Sambit's Ozone Layer
The ozone layer absorbs 93-99% of harmful ultraviolet (UV) light from the sun, protecting life on Earth. Over 91% of the ozone is found in the stratosphere. UV radiation can cause sunburn, skin cancer, eye disease, and weaken the immune system. With decreasing ozone levels over New Zealand since the 1970s, and the country's lack of air pollution to block UV rays, New Zealanders receive more UV exposure. This increases health risks like skin cancer, so it is important to take precautions like limiting time in the sun, wearing sunscreen, and protecting children's skin.
Greenhouse gases and global warming by MUHAMMAD FAHAD ANSARI 12IEEM 14
The document discusses ozone depletion and its causes and health effects. It explains that ozone, comprised of 3 oxygen molecules (O3), is found in the stratosphere and absorbs harmful UV radiation. Pollution containing CFCs and other compounds deplete the ozone layer by releasing chlorine and bromine when broken down by UV light, which then break down over 100,000 ozone molecules. As the ozone layer thins, more UV radiation reaches the Earth's surface, increasing health risks like skin cancer.
science-presentation-10-Alagaw.pdf
The document discusses ultraviolet (UV) rays, including:
- UV rays come from the sun and other sources like tanning beds. While UV rays produce vitamin D, overexposure can cause health risks like skin cancer.
- There are three main types of UV rays - UVA, UVB, and UVC - classified by wavelength. UVA and UVB can affect health but UVA penetrates deeper.
- UV rays have benefits like vitamin D production but risks include sunburn, skin damage, eye diseases, and skin cancers from overexposure. UV light technology can also kill bacteria and viruses.
Ozone depletion a brief study
The document discusses the effects of ozone depletion. It describes how in 1985, researchers discovered a large hole in the ozone layer over Antarctica. The ozone layer protects life from UV radiation. Ozone depletion is caused by both meteorological and chemical mechanisms, like CFCs releasing chlorine that destroys ozone. Increased UV radiation can damage DNA in organisms and increase skin cancer rates in humans. International agreements have sought to phase out ozone depleting chemicals to allow the ozone layer to recover over coming decades.
ENGAGE ban the beds
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SITE FOR DOWNLOADING: engagingscience.eu
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The document provides an overview of the topics that will be covered in a 12-lesson module on radiation and life. The lessons will cover topics like sunlight and how it interacts with the atmosphere and life, ozone protection, models of radiation, uses of radiation, mobile phones and health studies, x-ray safety, global warming, the carbon cycle, and climate change. It then provides more details on the objectives and activities for lesson 1 on sunlight, the atmosphere, and life.
Ozone depletion presentation Mr.P.R.Tambe
The document summarizes information about the ozone layer, including:
1) The ozone layer is a layer in the stratosphere that protects the Earth from harmful UV radiation. It is formed when oxygen molecules interact with solar radiation.
2) Chlorofluorocarbons (CFCs) released from products like aerosol sprays are the primary cause of ozone layer depletion, as chlorine atoms from CFCs destroy ozone molecules.
3) Depletion of the ozone layer leads to increased UV radiation reaching the Earth's surface, which can cause skin cancer, eye damage, and harm plants and plankton. International agreements have led to a ban on CFCs to allow
ozone.pdf
The document discusses the harmful effects of ultraviolet (UV) radiation on nature, marine life, plants, animals, humans and the environment. It explains that the ozone layer protects the earth from UV rays, but this layer has been depleted by CFC gases, leading to increased UV reaching the surface. This has negative impacts like reduced phytoplankton productivity, damage to plankton DNA, skin cancer and eye damage in humans, accelerated aging and genetic mutations. The conclusion calls for global efforts to restrict CFCs and raise awareness about reducing UV exposure to protect life on earth.
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This document discusses the ozone layer and ozone depletion. It begins by introducing the student's name and department. It then provides background on the ozone layer, noting that most ozone is found in the stratosphere between 19-30km, forming the ozone layer.
The document discusses the layers of the atmosphere and the roles of the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. It explains that the ozone layer in the stratosphere absorbs harmful UV rays from the sun. The document also covers causes of ozone depletion like CFCs, effects of ozone depletion like skin cancer, and international agreements to regulate ozone-depleting chemicals like the Montreal
Presentation (1)-1.pdf
The document discusses a presentation given on World Ozone Day about the ozone layer. It provides background on the ozone layer, noting that it protects life on Earth by absorbing 97-99% of harmful UV radiation from the sun. It then summarizes the five layers of the atmosphere, with an emphasis on the stratosphere where the ozone layer is located. The document outlines some of the main causes of ozone layer depletion including chlorofluorocarbons and other ozone depleting substances, as well as the harmful effects of depletion on human health, animals, plants, and marine life.
Ozone
Ozone (O3) is a bluish gas composed of three oxygen atoms that forms a protective layer in the stratosphere. It is produced through chemical reactions involving oxygen and ultraviolet radiation from the sun. Nearly 90% of Earth's ozone is found in the ozone layer between 15-30 km above the surface. The ozone layer protects life on Earth by absorbing harmful ultraviolet radiation from the sun. Depletion of the ozone layer is caused primarily by chlorofluorocarbons (CFCs) released into the atmosphere from industry. CFCs rise into the stratosphere where UV light breaks them down, releasing chlorine atoms that catalyze the destruction of ozone molecules. Ozone depletion increases risks
Ozone depletion and UV radiations leading to increased ionizing radiations an...
The Earthโs atmosphere is divided into several layers. The lowest region, the troposphere, extends from the Earthโs surface up to about 10 kilometres (km) in altitude. Virtually all human activities occur in the troposphere. Mt. Everest, the tallest mountain on the planet, is only about 9 km high. The next layer, the stratosphere, continues from 10 km to about 50 km. Most commercial airline traffic occurs in the lower part of the stratosphere. For nearly a billion years, ozone molecules in the atmosphere have protected life on Earth from the effects of ultraviolet rays. It is a form of oxygen (O2). We all know that, oxygen we need to live and breathe. Normal oxygen consists of two oxygen atoms. Ozone, however, consists of three oxygen atoms and has the chemical formula O3.
Semester 4
The ozone layer absorbs harmful UV radiation from the sun and is important for life on Earth. CFCs and HCFCs released chemicals like chlorine when they reached the stratosphere, which caused chemical reactions that depleted the ozone layer. One chlorine atom can break down over 100,000 ozone molecules. Thinning of the ozone layer allows more UV radiation to reach the Earth, which could harm humans, animals and plants. Measures to control depletion include limiting private vehicles, using eco-friendly cleaners, avoiding pesticides and banning dangerous gases.
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This document discusses how sound travels through different materials like solids, liquids, and gases. It explains that sound travels through the particles in these materials, using a particle model to demonstrate how vibrations are transmitted from one particle to the next. The document provides discussion questions about how sound travels through a solid versus a vacuum, and asks students to explain why sound does not travel through foam using a particle model. Homework is assigned to research ultrasonic sound: what it is, examples, and uses.
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The document discusses the ozone layer, including what it is, where it is located, and why it is important for life on Earth. It protects the Earth from harmful ultraviolet radiation from the sun. The ozone layer is being affected by human emissions of chlorofluorocarbons (CFCs), which are destroying the ozone. This is leading to thinning of the ozone layer and the formation of an ozone hole over Antarctica. The consequences of ozone depletion include increased skin cancer risks and other health impacts. Humans can help protect themselves from UV radiation by wearing sunscreen, hats, and sunglasses when outside.
Presentation1.pptx and so on and so forth
Ultraviolet (UV) rays come from the sun and other sources like tanning beds. There are different types of UV rays based on their energy levels, with higher-energy rays being more damaging. UV rays are mainly absorbed by skin and can cause sunburn, skin damage, and skin cancer over time. People are exposed to UV rays from the sun as well as some artificial sources. While UV rays have some benefits, overexposure is best avoided through clothing, sunscreen, and limiting time in the sun or tanning beds.
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The document discusses the visible light spectrum and ultraviolet radiation. It begins by explaining that white light is made up of the colors from red to violet in the visible spectrum. It then provides several examples of applications that use visible light, such as fiber optics, photography, and photosynthesis. The document goes on to discuss ultraviolet radiation, which has shorter wavelengths than visible light. It describes an activity using sunscreen to block UV rays and their effects. Finally, it details the different types of UV radiation and some of their uses and health impacts.
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The document discusses the depletion of the ozone layer and its effects. It notes that the ozone layer protects life from harmful UV rays. The release of chlorofluorocarbons into the atmosphere from products like refrigerators and air conditioners has led to ozone depletion by releasing chlorine that destroys ozone molecules. This ozone thinning allows more UV rays to pass through and negatively impact both human health and ecosystems. Recommendations are provided to protect against UV exposure.
Sambits Ozone Layer
The ozone layer absorbs 93-99% of harmful ultraviolet (UV) light from the sun, protecting life on Earth. Over 91% of the ozone is found in the stratosphere. UV radiation can cause sunburn, skin cancer, eye disease, and weaken the immune system. With decreasing ozone levels over New Zealand since the 1970s, and the country's lack of air pollution to block UV rays, New Zealanders receive more UV exposure. This increases health risks like skin cancer, so it is important to take precautions like applying sunscreen, wearing protective clothing and hats, and limiting time in the sun during peak UV hours.
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The ozone layer absorbs 93-99% of harmful ultraviolet (UV) light from the sun, protecting life on Earth. Over 91% of the ozone is found in the stratosphere. UV radiation can cause sunburn, skin cancer, eye disease, and weaken the immune system. With decreasing ozone levels over New Zealand since the 1970s, and the country's lack of air pollution to block UV rays, New Zealanders receive more UV exposure. This increases health risks like skin cancer, so it is important to take precautions like limiting time in the sun, wearing sunscreen, and protecting children's skin.
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The document discusses ozone depletion and its causes and health effects. It explains that ozone, comprised of 3 oxygen molecules (O3), is found in the stratosphere and absorbs harmful UV radiation. Pollution containing CFCs and other compounds deplete the ozone layer by releasing chlorine and bromine when broken down by UV light, which then break down over 100,000 ozone molecules. As the ozone layer thins, more UV radiation reaches the Earth's surface, increasing health risks like skin cancer.
science-presentation-10-Alagaw.pdf
The document discusses ultraviolet (UV) rays, including:
- UV rays come from the sun and other sources like tanning beds. While UV rays produce vitamin D, overexposure can cause health risks like skin cancer.
- There are three main types of UV rays - UVA, UVB, and UVC - classified by wavelength. UVA and UVB can affect health but UVA penetrates deeper.
- UV rays have benefits like vitamin D production but risks include sunburn, skin damage, eye diseases, and skin cancers from overexposure. UV light technology can also kill bacteria and viruses.
Ozone depletion a brief study
The document discusses the effects of ozone depletion. It describes how in 1985, researchers discovered a large hole in the ozone layer over Antarctica. The ozone layer protects life from UV radiation. Ozone depletion is caused by both meteorological and chemical mechanisms, like CFCs releasing chlorine that destroys ozone. Increased UV radiation can damage DNA in organisms and increase skin cancer rates in humans. International agreements have sought to phase out ozone depleting chemicals to allow the ozone layer to recover over coming decades.
ENGAGE ban the beds
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SITE FOR DOWNLOADING: engagingscience.eu
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The document provides an overview of the topics that will be covered in a 12-lesson module on radiation and life. The lessons will cover topics like sunlight and how it interacts with the atmosphere and life, ozone protection, models of radiation, uses of radiation, mobile phones and health studies, x-ray safety, global warming, the carbon cycle, and climate change. It then provides more details on the objectives and activities for lesson 1 on sunlight, the atmosphere, and life.
Ozone depletion presentation Mr.P.R.Tambe
The document summarizes information about the ozone layer, including:
1) The ozone layer is a layer in the stratosphere that protects the Earth from harmful UV radiation. It is formed when oxygen molecules interact with solar radiation.
2) Chlorofluorocarbons (CFCs) released from products like aerosol sprays are the primary cause of ozone layer depletion, as chlorine atoms from CFCs destroy ozone molecules.
3) Depletion of the ozone layer leads to increased UV radiation reaching the Earth's surface, which can cause skin cancer, eye damage, and harm plants and plankton. International agreements have led to a ban on CFCs to allow
ozone.pdf
The document discusses the harmful effects of ultraviolet (UV) radiation on nature, marine life, plants, animals, humans and the environment. It explains that the ozone layer protects the earth from UV rays, but this layer has been depleted by CFC gases, leading to increased UV reaching the surface. This has negative impacts like reduced phytoplankton productivity, damage to plankton DNA, skin cancer and eye damage in humans, accelerated aging and genetic mutations. The conclusion calls for global efforts to restrict CFCs and raise awareness about reducing UV exposure to protect life on earth.
Ozone layer depletion
This document discusses the ozone layer and ozone depletion. It begins by introducing the student's name and department. It then provides background on the ozone layer, noting that most ozone is found in the stratosphere between 19-30km, forming the ozone layer.
The document discusses the layers of the atmosphere and the roles of the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. It explains that the ozone layer in the stratosphere absorbs harmful UV rays from the sun. The document also covers causes of ozone depletion like CFCs, effects of ozone depletion like skin cancer, and international agreements to regulate ozone-depleting chemicals like the Montreal
Presentation (1)-1.pdf
The document discusses a presentation given on World Ozone Day about the ozone layer. It provides background on the ozone layer, noting that it protects life on Earth by absorbing 97-99% of harmful UV radiation from the sun. It then summarizes the five layers of the atmosphere, with an emphasis on the stratosphere where the ozone layer is located. The document outlines some of the main causes of ozone layer depletion including chlorofluorocarbons and other ozone depleting substances, as well as the harmful effects of depletion on human health, animals, plants, and marine life.
Ozone
Ozone (O3) is a bluish gas composed of three oxygen atoms that forms a protective layer in the stratosphere. It is produced through chemical reactions involving oxygen and ultraviolet radiation from the sun. Nearly 90% of Earth's ozone is found in the ozone layer between 15-30 km above the surface. The ozone layer protects life on Earth by absorbing harmful ultraviolet radiation from the sun. Depletion of the ozone layer is caused primarily by chlorofluorocarbons (CFCs) released into the atmosphere from industry. CFCs rise into the stratosphere where UV light breaks them down, releasing chlorine atoms that catalyze the destruction of ozone molecules. Ozone depletion increases risks
Ozone depletion and UV radiations leading to increased ionizing radiations an...
The Earthโs atmosphere is divided into several layers. The lowest region, the troposphere, extends from the Earthโs surface up to about 10 kilometres (km) in altitude. Virtually all human activities occur in the troposphere. Mt. Everest, the tallest mountain on the planet, is only about 9 km high. The next layer, the stratosphere, continues from 10 km to about 50 km. Most commercial airline traffic occurs in the lower part of the stratosphere. For nearly a billion years, ozone molecules in the atmosphere have protected life on Earth from the effects of ultraviolet rays. It is a form of oxygen (O2). We all know that, oxygen we need to live and breathe. Normal oxygen consists of two oxygen atoms. Ozone, however, consists of three oxygen atoms and has the chemical formula O3.
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The ozone layer absorbs harmful UV radiation from the sun and is important for life on Earth. CFCs and HCFCs released chemicals like chlorine when they reached the stratosphere, which caused chemical reactions that depleted the ozone layer. One chlorine atom can break down over 100,000 ozone molecules. Thinning of the ozone layer allows more UV radiation to reach the Earth, which could harm humans, animals and plants. Measures to control depletion include limiting private vehicles, using eco-friendly cleaners, avoiding pesticides and banning dangerous gases.
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5. Evaluate the accuracy of the results and suitability of the procedure
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This document provides instructions for a media watch scrapbook project on the topic of "The Earth in the Universe." Students are asked to create a scrapbook with at least 4 media articles linked to this topic. For each article, they should include the source and a summary, as well as a comment on the article. The scrapbook will be evaluated based on how well it is structured and organized, the use of visuals, and the planning and referencing of information sources. The due date for the completed scrapbook project is Thursday, June 16th.
Weathering WEARING AWAY
Fossils are the preserved remains or traces of animals and plants buried in the ground thousands of years ago. They form when plant and animal remains are buried under sediment and the organic material is replaced with minerals from water. Fossils provide evidence that allows scientists to understand prehistoric plant and animal life by showing what organisms existed in the past and how they evolved over time.
C3 FROM FARM TO PLATE
This document discusses food chains and farming methods. It defines key terms related to food chains like producers, primary consumers, and predators. It also compares intensive and organic farming methods. Intensive farming uses chemical fertilizers, pesticides and insecticides to achieve high yields, while organic farming relies on techniques like crop rotation and composting to maintain soil productivity without chemicals. The document provides information on these topics to help understand the farm to table process.
C3 FOOD ADDITIVES & PRESERVATIVES
This document discusses food additives and E numbers. It aims to explain why additives are added to foods and characterize different types of additives. Preservatives help prevent spoilage in processed and traditional foods. Antioxidants prevent oxidation. Emulsifiers and stabilizers are important for processed foods as they help maintain consistency. E numbers identify additives approved for use in Europe, and while processed foods contain them, it is generally safe to eat these foods. The document tasks reviewing these concepts and investigating emulsifiers and stabilizers through a practical activity.
METAL REACTIONS AND USES
The document discusses the reactions of metals with acids and their uses. It explains that metals are found naturally in ores and can be extracted. Certain metals like aluminum, steel, and iron have specific uses like in aircraft, cooking pots, etc. due to their properties. It also describes how most metals react with acids to produce salts and hydrogen gas. The reactivity of metals follows certain patterns that allow predictions of how a metal will react with acid.
SOUND AND HEARING - PART 1
In unit 8L Sound and Hearing you are expected to:
build on your knowledge of sound and hearing
explain how sound travels through media (solid, liquid and gas)
give an explanation of how the human ear works,
find out about the harmful effects of loud noise and how loud noise can be reduced
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skeleton System.pdf (skeleton system wow)
๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ
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ุฉ ุชุดุฑูุญ ุงูุฌูุงุฒ ุงูููููู (ูุธุฑู 3)
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2- ุชุญุชูู ุนูู 78 ุฑุณู
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(๐๐๐ ๐๐๐) (๐๐๐ฌ๐ฌ๐จ๐ง ๐)-๐๐ซ๐๐ฅ๐ข๐ฆ๐ฌ
๐๐ข๐ฌ๐๐ฎ๐ฌ๐ฌ ๐ญ๐ก๐ ๐๐๐ ๐๐ฎ๐ซ๐ซ๐ข๐๐ฎ๐ฅ๐ฎ๐ฆ ๐ข๐ง ๐ญ๐ก๐ ๐๐ก๐ข๐ฅ๐ข๐ฉ๐ฉ๐ข๐ง๐๐ฌ:
- Understand the goals and objectives of the Edukasyong Pantahanan at Pangkabuhayan (EPP) curriculum, recognizing its importance in fostering practical life skills and values among students. Students will also be able to identify the key components and subjects covered, such as agriculture, home economics, industrial arts, and information and communication technology.
๐๐ฑ๐ฉ๐ฅ๐๐ข๐ง ๐ญ๐ก๐ ๐๐๐ญ๐ฎ๐ซ๐ ๐๐ง๐ ๐๐๐จ๐ฉ๐ ๐จ๐ ๐๐ง ๐๐ง๐ญ๐ซ๐๐ฉ๐ซ๐๐ง๐๐ฎ๐ซ:
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RADIATION AND LIFE MODULE P2
- 1. RAD IA TI ON AND LIFE MODULE P2 www.sciencetutors.zoomshare.com
- 2. On Earth, sunlight is filtered through the atmosphere, producing radiant heat and Ultra-Violet (UV) radiation SUN LI G H T www.sciencetutors.zoomshare.com
- 3. SUN LI G H T Most energy from the Sun is in the form of visible and UV radiation. www.sciencetutors.zoomshare.com
- 6. UV RADIATION Ultraviolet radiation (UV) is more energetic than visible radiation and therefore has a shorter wavelength. www.sciencetutors.zoomshare.com
- 7. BINGE SUN BATHING Survey shows that short, intense exposure to the sun in much hotter climate doubles your chances of getting the most fatal of skin cancer. TRUE OR FALSE ? And Why? www.sciencetutors.zoomshare.com
- 8. Overexposure to ultraviolet radiation (UV), can cause skin cancer and other serious health effects. Your Task Make a list of health problems caused by UV Acknowledgement of photo copied from www.supanet.com www.sciencetutors.zoomshare.com
- 9. UV radiation is both Beneficial and Damaging to Human. Class to discuss and note down answers using bullet points BENEFITS AND RISKS www.sciencetutors.zoomshare.com
- 10. 3 Minutes Task Describe at least any 3 ways that a person can reduce sunburn and the risk of skin cancer. Sunburn Skin cancer www.sciencetutors.zoomshare.com
- 11. Discuss and write down simple guidelines you can follow to protect against damage from the sun's harmful rays. Acknowledgement of photo copied from www.supanet.com www.sciencetutors.zoomshare.com
- 12. SUNLIGHT AND LIFE www.sciencetutors.zoomshare.com Why Do Plants Have Leaves?
- 13. Input And Out Energy In Photosynthesis www.sciencetutors.zoomshare.com PHOTOSYNTHESIS Input Energy comes from the light absorbed by the leaves Output Energy is provided by Respiration when starch is used up.
- 14. SUNLIGHT ENERGY & SELECTIVE ABSORPTION www.sciencetutors.zoomshare.com What is selective Absorption? Leaves absorb the red and blue light from sunlight when it falls on leaves but reflect other colours-This process is called selective absorption
- 16. www.sciencetutors.zoomshare.com A layer in the Earth's atmosphere that contains relatively high concentrations of ozone ( often written as O 3 ) is called OZONE LAYER OZONE OR O 3 LAYER
- 18. What effect do UV radiation have on Ozone? 3 Atoms of Oxygen in Ozone molecule
- 19. What effect do CFCs have on Ozone 3 Atoms of Oxygen in Ozone molecule
- 20. What action do we need to take to reduce damage to the ozone layer? 3 Atoms of Oxygen in Ozone molecule
- 21. GLOBAL WARMING www.sciencetutors.zoomshare.com CLIMATE CHANGE
- 23. MOBILE PHONES - COOKED BRAIN? Are Mobile Phones Safe? How safe are Mobile Phones? Class to discuss and note down answers . Homework What are the actual risk and perceived risk of using mobile phones www.sciencetutors.zoomshare.com