Unit 1: Energy Outline Honors ES
Upcoming SlideShare
Loading in...5
×
 

Unit 1: Energy Outline Honors ES

on

  • 1,997 views

 

Statistics

Views

Total Views
1,997
Views on SlideShare
1,949
Embed Views
48

Actions

Likes
0
Downloads
54
Comments
0

3 Embeds 48

http://www3.eboard.com 17
http://www2.eboard.com 16
http://www1.eboard.com 15

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Unit 1: Energy Outline Honors ES Unit 1: Energy Outline Honors ES Document Transcript

  • UNIT 1: ENERGY  HONORS EARTH SCIENCE Stop Monkey-N-ing around and Go Green already! P.S. I’m Mookie the Monkey NOTE PACKET #2 MS. GILL
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 Vocabulary: Absorption Mechanical Conduction Medium Convection Melting Condensation Non-Renewable Electricity Resources Electromagnetic Spectrum Nuclear Energy Phase Change Energy Transformations Potential Environment Radiation Equilibrium Reflection Forms of Energy Refraction Freezing Renewable Resources Frequency Scattering Gas Solid Geothermal Solar Global Warming Sound Green House Affect Specific Heat Green House Gases Stored Mechanical Heat Temperature Joules Thermal Kinetic Transmission Law of Conservation of Mass & Energy Vaporization Light Wavelength Liquid Work Matter Did you know… A piece of buttered toast contains about 315 kilojoules (315,000 joules) of energy. With that energy you could: -jog for 6 minutes -Bicycle for 10 minutes -Walk briskly for 15 minutes -Sleep for 1.5 hours -Run a car for 7 seconds at 50 miles per hour -Light a 60 watt light bulb for 1.5 hours. Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 Name:________________________________ Period:_________ Date:____________________ A. WHAT IS ENERGY? Energy is the ability to do ________________ Work occurs when a _____________ causes an object to ___________ in the same direction as the force. B. THERE ARE MANY DIFFERENT FORMS OF ENERGY THERMAL: The total ________ energy of STORED MECHANICAL ENERGY: the particles in matter. (Molecular motion) Stored energy due to a change in the shape of an object. Ex: _______________ SOUND: A type of mechanical energy. It is LIGHT: A form of _______ the energy produced when objects energy that moves in a ________. Ex: tuning fork, bell __________ Ex: lamp, stars MECHNICAL: Energy SOLAR: All forms of with which ______ energy that come objects perform work. from the ______ Ex: Wind, flowing water, using a hammer ELECTRICITY: A form NUCLEAR: Energy STORED of energy produced by in the ________ (center) the _____________ of an atom. of ______________ Ex: nuclear bombs CHEMICAL: Energy STORED GEOTHERMAL: Heat energy STORED in chemical ____ that can be within the ___________. released. Ex: food, fossil fuels, Ex: Volcanic eruptions, battery acid geysers Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 C. All forms of energy can be classified as Kinetic or potential. The two basic states of energy. So, what’s the difference? POTENTIAL ENERGY: KINETIC ENERGY: 1) Potential energy is stored energy due to 1)Kinetic is energy of _________________ and object’s __________________ 2) Kinetic depends on the 2) An object that is lifted from its position __________________ and the on Earth has gravitational potential Energy _____________________ of an object. which depends on ______________ and mass 3) Faster objects have ____________________ kinetic energy than 3) Massive objects have slower objects. _________________ potential energy than less massive objects 4) An object at a higher elevation will have _______________ potential energy than an object at a lower elevation Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 D. Energy Transformations: The law of conservation of Energy states that energy cannot be created or destroyed it simply changes form. Energy has always existed in one form or another! This law is also true of mass! Law of conservation of Mass and Energy: Mass/ NRG ____________ Mass/ NRG ______________ Mass/ Energy can only __________ During energy changes, if one body is losing energy, the other is __________________ energy. During energy changes, the total energy __________________________________. Energy always flows from _______________ to _______________ (source to sink) Figure 1: Figure 2: Energy is flowing Energy is flowing from _________ from _________ to ____________ to ____________ The exchange of energy will stop when EQUILIBRIUM IS REACHED, and both source and sink are the same temperature. Unusable Energy: very often during the energy transformation process, some __________ energy is produced due to friction. This is wasted energy and is lost to the environment. Examples of Energy Changes: -Energy in a flashlight’s batteries becomes light energy when the flashlight is turned on. -Food is stored energy, when your body uses that energy to do work it becomes kinetic energy. - A television changes electrical energy into light and sound energy Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 E. Methods Of Energy transfer Energy moves from regions of _________ concentration to ________ concentrations of energy, from ______________ to ____________. There are 3 methods of Energy Transfer : ____________________, ____________________ & _____________________. Method Explanation of transfer Best medium for Examples of transfer energy transfer Direct contact (touch) Conduction occurs *Touching a hot Molecule To Molecule fastest in _______ surface Conduction *Electricity Conduction is a form of energy __________ are the transfer by direct _________ best conductors of he of molecules heat energy. Energy transfer due to density Occurs ONLY in *Hot air or water differences _____ which are rising Convection liquids and gases! *Volcanoes Convection is a form of heat *Lava lamp transfer that occurs by up and down motions of a _______ differences in ______ Radiation Radiation is the transfer of *Gamma heat in _____. *X-rays No medium needed *UV Electromagnetic (EM) *Visible waves that move through a *Infrared vacuum (empty space) *Microwave *Radio Electromagnetic radiation travels at the speed of ______. Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 F. Specific Heat Notes 1. HEAT: the energy of moving __________ 2. HOT OBJECTS contain __________ heat than cold ones 3. All objects above __________ contain heat 4. Heat always flows from hot objects to cold objects until the both reach the _____ temperature. 5. The greater the difference in temperature between them, the _________ heat is transferred. HOW IS HEAT TRANSFERRED BETWEEN OBJECTS? Name that type of heat transfer! Figure 1: Figure 2: Figure 3: ________________ ________________ _______________ Specific Heat Quantity of heat needed to raise One gram of any Substance by 1 degree Celsius The higher the Specific heat… the more energy is needed to raise the temperature. See the cover of the ESRT.     Measuring Energy: Energy can be measures in many different ways. Typical units include: ________________________, _________________, & ___________________ The term “Joule” is named after English Scientist James Prescott Joule who lived from 1818 to 1889. He discovered that Heat is a type of Energy! 1,000 joules =1 kilojoule= 1 Btu Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 Specific Heat Worksheet Did you know… Jumping into a pool on a hot summer day is refreshing because the water is cooler than the air around you and the ground under your feet. You may wonder why the water is cooler since the water, air, and ground are being heated by the same source- the Sun. One reason is that it takes more heat energy to raise the temperature of some substances than others. The amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius is called the specific heat of that substance. Water has a specific heat of 4.18 meaning it take 4.18 Joules of energy to raise 1 gram of water 1 degree Celsius. This value is high compared to the specific heats for other materials, such as various rocks or metals. Note the scientific unit for energy is the Joule. See the front of your ESRT for a complete list of specific heats for common materials. Now complete these practice questions! 1. What substance has the highest specific heat? ____________________________ 2. Why do metals have low specific heats? __________________________ 3. Why are pans made of metals with low specific heats? _____________________________ ______________________________________________________________________ 4. Which takes more energy to raise its temperature, water or land? ___________________ 5. Which would heat up and cool off faster, land or water? __________________________ 6. Which of these substances would heat up fastest, water, iron or copper: ____________ 7. Which material would require the greatest amount of heat energy to raise its temperature from 50 °C to 100 °C ? A. 10 grams of granite B. 10 grams of ice C. 10 grams of lead D. 10 grams of iron 8. Which pan would you use if you wanted to cook your food quickly? Copper pan or Iron pan? 9. Which material would require the greatest amount of heat energy to raise its temperature from 50 C to 100 C? A. granite B. ice C. lead D. iron 10. Calculate how many joules would be required to raise 3 grams of water from 50 °C to 65 °C. Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 G. Phases of Matter: Matter is ___________________________________________________________ On Earth, matter exists in three states _________, ____________& ____________ Particle Motion How is it Does it have a Volume? Arrangement (Kinetic Energy) bonded? define shape? Solid Liquid Gas Phase Changes: Changes in states of matter result from changes in energy, specifically “heat energy.” Consider the weightlifter, to push up the weights & lift them up requires energy… So to push molecules apart also requires energy. Look at the molecules in the boxes above and then complete the statements below. If you have to separate molecules write “put in energy,” if molecules are coming together then write “give off energy.” 1. As you go from solid to liquid, you must ____________________________________. 2. As you go from liquid to solid, you must ____________________________________. 3. As you go from liquid to gas, you must _____________________________________. 4. As you go from gas to liquid, you must _____________________________________. What are the phase changes called? Solid Liquid Gas Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 H. Phase Change Diagram of Water -Remember, as you change states of matter, its all about energy! -The law of conservation of Energy states that energy is neither created of destroyed it simply changes form. -Therefore, going form solid to liquid you put energy in (ENERGY IS ABSORBED) and then when you reverse the process and go from liquid back to solid, you get the energy back! (ENERGY IS RELEASED) The energy stored in the phase change process is called: ________________________ There is NO temperature change during a phase change. Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 I. Electromagnetic Energy Notes The Earth is always trying to achieve ____________________________. Therefore, energy is constantly being re-distributed flowing from ________________ to ______________. The Earth receives energy from two sources: ________________ & ___________________ All matter radiates some __________________________________________________ The sun emits energy in ______ wavelengths of the electromagnetic spectrum. (ESRT pg. 14) The electromagnetic spectrum places different types of electromagnetic energy in order of increasing wavelength. From the shortest wavelength Gamma Rays to the longest wavelength Radio Waves. Visible Light is also on the spectrum in the middle. Electromagnetic energy with wavelengths longer than visible light is known as long wave electromagnetic energy. Electromagnetic energy with wavelengths shorter than visible light is known was short wave electromagnetic energy. The shorter wavelength electromagnetic energy has more energy than the long wavelength electromagnetic energy. Relationships • The longer the wavelength the lower the frequency and the lower the energy • The shorter the wavelength the higher the frequency and the higher the energy Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 Waves: Waves are disturbances that transfer energy from place to place. If you throw a stone into a pond, circular waves move along the surface since some of the stones kinetic energy was transferred. The substance through which waves travel is called a medium. This can be solid, liquid or gas. Light does not need a medium it can travel through empty space called a vacuum. Waves are all around us: sound waves, light waves, ocean waves, and even people waves at a Yankee’s Game. We are studying waves now because the Sun’s energy is in the form of electromagnetic energy which is radiated/ transferred in the form of transverse waves to Earth. Any object with a temperature above absolute zero (-2730C) radiates electromagnetic energy with waves (the shorter the wavelength the higher the energy). The parts of a Wave Crest: high point of a wave Trough: low point of a wave Amplitude: height of a wave (the distance a particle moves from rest) Frequency: number of complete waves passing a point in a given time Hertz: unit used to measure frequency of a wave (waves per second) Wavelength: distance between two neighboring crests or troughs There are two types of waves: Transverse and Compressional. Compressional: ex. Sound waves Transverse: ex. Light waves Each type of energy differs in its _________________________. A wavelength is the distance between two crests of the wave. Frequency is defined as a number of cycles per unit time. Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 Electromagnetic Spectrum Notes The Sun gives off light and heat in the form of _________________ and __________________ Sun electromagnetic energy. This is called INSOLATION. However, the short wavelengths (dangerous UV radiation, gamma rays & x-rays) are mostly absorbed by the ozone so they don’t reach earth’s surface. The ozone layer is found in the ____________________ layer of the atmosphere. Visible light passes through earth’s atmosphere with the greatest intensity. Less than half of the incoming solar radiation is received by the earth’s surface. The energy that does get through our atmosphere is absorbed by earths surface. The earth’s surface in turn reradiates the energy in the Earth form of heat called ________________ radiation. J. Interactions between Electromagnetic Energy & the Environment: How do waves behave when they come in contact with different materials? 1. _______________________: or taken ito the material. UV is absorbed by the ozone, infrared is absorbed by carbon dioxide, water vapor, methane, and nitrous oxide. Good absorbers are good re- radiators! 2. _______________________ or bounced of the material. Waves are reflected by clouds, ice, snow and water 3. ____________________ to be refracted or reflected in many directions by aerosols, water droplets, ice crystals, pollutants, dust, pollen 4. _______________________ or bent changing the directin of the wave, often light is bent as it moves through varied densities 5. _______________________ when energy passes straight through a medium (materal) Less than __________________ of the incoming solar radiation is received by the Earth because of these processes. Surface properties of the Earth & Absorption of Energy: 1. Color: Light (white) reflects & dark (black) absorbs Example: Pavement warms before grassy lawns. 2. Texture: Rough surface absorbs & smooth surface reflects Example: Snow and Ice reflect Insolation and remain cold. Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 K. The Green House Affect What is Global Warming? An ___________ in the Earth’s Average surface air temperature. You might often hear about the green house affect and its association with Global Warming. In the atmosphere, CO2, Methane and H2O, (the greenhouse gases) act like the glass in the greenhouse by trapping heat. These gases very similar manner as the glass sides and roof of a greenhouse keep in heat. Let’s see how this works… Short wave radiation like ___________ passes through the glass of a greenhouse and is _______________ by the objects inside the greenhouse. These objects __________________ the energy as ____________________, which get reflected back into the greenhouse and warms the air. In Earth’s atmosphere, there are many gases that act like the glass of a greenhouse and ________ long-wave radiation, keeping it in the Earth’s Atmosphere. Therefore, holding that heat in the atmosphere and raising the global temperature. These are known as ______________________. Earth They include water vapor, CFCs, Ozone, Methane Gas and Carbon dioxide. Without some greenhouse gases, the Earth would be too _____________ for us to survive. But an overload of greenhouse gases creates a problem as well! How does too much CO2 contribute to Global warming? _______________________________ What human activities contribute to CO2 production and an increase in the greenhouse effect? _________________________________________________________________________ If present trends continue possible effects may include: -Rising sea levels due to melting polar ice caps; -Increasing frequency and severity of storms and hurricanes; -More frequent heat waves and droughts; and -Relocation of major crop growing areas. Page:____
  • Unit 1: Energy Earth Science-Ms. Gill Note Packet #2 L. Renewable and Non-Renewable Resources. What is an Non-Renewable Resource? An What is a Renewable Resource? An energy energy resource that is resource that is __________________________________ _________________________________ _________________________________ _________________________ Examples: Examples: __________________ __________________ __________________ __________________ __________________ ________________ ________________ _______________ To make our non-renewable resources last ________________ longer we can __________________ A renewable resource produces less __________________ _________ (substance that can harm living __________________ things and/or the environment Only 7% of our energy consumption is from renewable resources!!! Try to make little changes in your life to reduce your dependence on Non-Renewable Resources! What do you plan to do? _______________________________ _______________________________ _______________________________ _______________________________ Page:____