Combine use of m aterials
•Download as PPTX, PDF•
2 likes•18,619 views
I. Man-made materials are obtained through chemical processes and include materials like metal, plastic, and glass. II. Natural materials come from plants, animals, and rocks and include materials like leather, fur, silk, and rubber. III. While some natural materials like rubber can become man-made through processing, materials like plastic and metal are solely man-made through chemical means rather than being derived from nature.
Report
Share
Report
Share
Recommended
Quiz question
The document is a quiz about natural and man-made materials. It contains multiple choice questions that test understanding of what materials come from nature versus those that are man-made, examples of each, and how some man-made materials are derived from natural sources through chemical processes. The quiz covers topics like what materials animals, plants, and rocks provide and how plastics, metals, and other synthetic materials are produced.
Materials
The document discusses natural and man-made materials. Natural materials like rocks, logs, sand, and wool are found in nature, while man-made materials require human processing or manufacturing and include anything made from rocks, paper, plastic, or glass as well as items made from wood or wool. The document concludes by asking the reader to make a list distinguishing natural materials from man-made ones.
Working with materials
Raw materials are substances extracted from nature and can be classified into animal, vegetable, and mineral origins. These raw materials are processed and transformed into processed materials that are used by humans to manufacture goods that satisfy needs and improve living standards. The technical materials used can be grouped into wood, metal, plastic, textiles, ceramics, and stone, with wood and stone being natural materials, metals extracted from mines, plastic derived from petroleum, and textiles including both natural and synthetic fibers.
Natural and manmade materials
Natural materials come from plants, animals, and rocks, and include wood, cotton, leather, and metal. Man-made materials are produced through chemical processes applied to natural materials, such as plastic, synthetic cloth, and petroleum products. Man-made materials are generally more durable than earlier natural materials due to advances in chemical processing techniques.
NATURAL AND MAN MADE MATERIALS
This document discusses natural and man-made materials used in interior design. It classifies materials into two categories: natural materials which come from the earth like timber, stone, bamboo, and cork; and man-made materials which are processed like tiles, brick, concrete, metals, glass, plastic, and plasterboard. For each material type, the document provides brief descriptions of common varieties, their properties, and applications. Natural materials are considered more authentic and environmentally friendly but not always renewable, while man-made materials can closely resemble naturals and have extensive design applications due to advances in technology.
Natural materials and Man-made
The document discusses video clips. Video clips are short segments of video that can be used online or in other media. They are often used to promote movies, TV shows, or other longer videos by sharing brief, engaging samples to attract viewers' interest.
Materials
Wood comes from trees and is used to make furniture, doors, and other wooden objects. Plastics are man-made from oil and used for items like bottles, combs, and rings. Rubber comes from rubber trees and is formed into tires, hoses, boots, and balls. Metals like iron and steel are mined from underground and used for cookware, tools, and other metal objects. Fabrics are used to make clothes, towels, sheets, and curtains. Glass is produced from sand and often chosen when transparency is required for windows, containers, and more. Ceramic is created from clay, molded, and fired to become hard materials for pots, plates, and vases.
Materials
The document lists various materials - wood, metal, fabric, paper, and plastic. For each material, it lists examples of objects commonly made from that material, and asks the reader to identify which objects on the list are made of the given material. It then provides feedback on the reader's answers, stating whether they were correct or needed to try again.
Recommended
Quiz question
The document is a quiz about natural and man-made materials. It contains multiple choice questions that test understanding of what materials come from nature versus those that are man-made, examples of each, and how some man-made materials are derived from natural sources through chemical processes. The quiz covers topics like what materials animals, plants, and rocks provide and how plastics, metals, and other synthetic materials are produced.
Materials
The document discusses natural and man-made materials. Natural materials like rocks, logs, sand, and wool are found in nature, while man-made materials require human processing or manufacturing and include anything made from rocks, paper, plastic, or glass as well as items made from wood or wool. The document concludes by asking the reader to make a list distinguishing natural materials from man-made ones.
Working with materials
Raw materials are substances extracted from nature and can be classified into animal, vegetable, and mineral origins. These raw materials are processed and transformed into processed materials that are used by humans to manufacture goods that satisfy needs and improve living standards. The technical materials used can be grouped into wood, metal, plastic, textiles, ceramics, and stone, with wood and stone being natural materials, metals extracted from mines, plastic derived from petroleum, and textiles including both natural and synthetic fibers.
Natural and manmade materials
Natural materials come from plants, animals, and rocks, and include wood, cotton, leather, and metal. Man-made materials are produced through chemical processes applied to natural materials, such as plastic, synthetic cloth, and petroleum products. Man-made materials are generally more durable than earlier natural materials due to advances in chemical processing techniques.
NATURAL AND MAN MADE MATERIALS
This document discusses natural and man-made materials used in interior design. It classifies materials into two categories: natural materials which come from the earth like timber, stone, bamboo, and cork; and man-made materials which are processed like tiles, brick, concrete, metals, glass, plastic, and plasterboard. For each material type, the document provides brief descriptions of common varieties, their properties, and applications. Natural materials are considered more authentic and environmentally friendly but not always renewable, while man-made materials can closely resemble naturals and have extensive design applications due to advances in technology.
Natural materials and Man-made
The document discusses video clips. Video clips are short segments of video that can be used online or in other media. They are often used to promote movies, TV shows, or other longer videos by sharing brief, engaging samples to attract viewers' interest.
Materials
Wood comes from trees and is used to make furniture, doors, and other wooden objects. Plastics are man-made from oil and used for items like bottles, combs, and rings. Rubber comes from rubber trees and is formed into tires, hoses, boots, and balls. Metals like iron and steel are mined from underground and used for cookware, tools, and other metal objects. Fabrics are used to make clothes, towels, sheets, and curtains. Glass is produced from sand and often chosen when transparency is required for windows, containers, and more. Ceramic is created from clay, molded, and fired to become hard materials for pots, plates, and vases.
Materials
The document lists various materials - wood, metal, fabric, paper, and plastic. For each material, it lists examples of objects commonly made from that material, and asks the reader to identify which objects on the list are made of the given material. It then provides feedback on the reader's answers, stating whether they were correct or needed to try again.
Materials
The document lists common objects and materials they are made of, including rings (gold), bottles (glass), tables (wood), walls (stone), bracelets (silver), hats (fur), houses (brick), sweaters (wool), bikes (metal), bags (plastic), jackets (leather), books (paper), boots (rubber). It then prompts to complete statements with the correct material, such as erasers (rubber), windows (glass), scarves (wool), schoolbags (plastic), newspapers (paper), bottles (glass), chairs (wood), schools (brick), walls (stone), coats (leather).
Materials and their properties presentation
This document discusses materials and their properties. It defines materials as physical substances used to make things and lists some main categories including metals, plastics, ceramics, glass and fibers. It then discusses properties of materials as descriptions of their characteristics like hardness, strength, flexibility. Examples are given of materials around us and properties are listed. Metals are highlighted as one main group of materials that are shiny, strong, good conductors and usually opaque, with examples like aluminum and copper.
Identify which object can rust
The document lists various common household items including paper clips, towels, iron scissors, aluminum cans, screws, a wooden chair, plastic bottles, and needles. Most of the items are small objects that one would find around the house or office. A few items like the wooden chair and plastic bottle are larger household goods.
Physical or chemical changes
This document lists examples of different chemical and physical changes and asks the reader to identify whether each change listed is a chemical change or a physical change. Specifically, it provides examples such as cutting paper, ice melting, toast burning, rocket fuel burning, sawing wood, metal rusting, a disappearing puddle, and a candle burning and asks the reader to determine if each example represents a chemical change or a physical change.
English for kids - The foods
This document lists common foods in English and Portuguese, including rice, beans, meat, chicken, soup, fish, pasta, and vegetables. It provides basic food vocabulary words translated between English and Portuguese for kids learning the languages.
The rock cycle story
A lava blob cools and hardens into a rock. The rock then experiences the three stages of the rock cycle: it erodes into sediment and is cemented into a sedimentary rock, it undergoes heat and pressure to form a metamorphic rock, then it melts into lava and the cycle repeats. The rock's mother explains that its experiences represented the three main types of rocks - igneous, sedimentary, and metamorphic - and the continuous transformations that make up the rock cycle.
Made of
The document discusses using the phrase "made of" to describe the materials that objects are composed of. It can be used with both singular and plural nouns, and questions about what something is made of are answered with "is made of" or "are made of" depending on whether the noun is singular or plural.
Rock Cycle storyboard
There are three main types of rocks: igneous, sedimentary, and metamorphic. Igneous rocks form when magma cools and hardens. Sedimentary rocks form as rocks erode and the sediment collects and hardens. Metamorphic rocks form when rocks experience pressure and change without melting. Rocks are constantly changing between these three types through the rock cycle.
City, town, village
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms for those who already suffer from conditions like depression and anxiety.
Healthy habits
To maintain good health, one should take care of their digestive, respiratory, circulatory, and locomotor systems by not sitting or standing incorrectly, getting enough sleep and rest, exercising outdoors, eating a balanced diet, drinking water, brushing teeth, and washing food before eating it.
Community helpers
This document introduces several community helpers - doctor, firefighter, teacher, mailman, and police officer - and provides a brief 1-2 sentence description of what each does to help people in the community. The doctor helps sick or hurt people feel better. The firefighter rescues people from fires. The teacher helps people learn in school. The mailman delivers mail to houses. The police officer protects community members.
Natural and man made
The document discusses natural and man-made materials. Natural materials like rocks, logs, sand, and wool are found in nature, while man-made materials require human processing or manufacturing, such as anything made from rocks, paper, plastic, or glass. The document concludes by asking the reader to make a list distinguishing natural materials from man-made ones.
Riya gp life_silk
The document discusses the life cycle of the silk moth. A group led by Shephali Mam and including Riya Joshi, Sanjana, Akash, and K. Kiran examines how female silk moths only come out at night, how silk worms feed on mulberry tree leaves, and how the worms spin cocoons made of silk fibers during their life cycle. The document then asks if the reader enjoyed learning about the silk moth's life cycle.
Going Beyond Leed
This document discusses sustainable and environmentally-friendly window treatments and upholstery fabrics that go beyond LEED certification. It describes fabrics made from organic and natural materials like silk, hemp, linen and wool that are grown and produced sustainably without chemicals or excess energy usage. The document also discusses the company's use of sustainable supplies and practices in its workroom like organic cotton, natural latex foam and recycling of materials.
IND-2012-14 Prestine Public School Saving Silkworm and yet using silk
This document discusses silk production from silkworms and the various uses of silk fabric. It describes the lifecycle of the silkworm from egg to cocoon formation. It notes that silk can be produced without killing the silkworm by using wild silks like Eri silk where the moth chews its way out of the cocoon. The document outlines the major types of silk including Mulberry, Tasar, Muga, and Eri silk. It discusses how silk is used for various textiles, clothing, furnishings and more due to its strength, appearance and other properties. The document provides information on identifying silk through burn testing and its production process from cocoon to textiles.
Spain in 4D
Se trata de una presentación en la que se pueden ver 4 fotografías de aspectos significativos de España. Quiere ser un resumen en imágenes de lo más signficativo
Mindpap
Cik Ti, a small animal, emerged from its shelter to search for food but it started raining heavily. It returned to its shelter, a hole near a house, tired and hungry. There was no food left. Cik Ti went into the kitchen looking for food and found some cheese. After eating, it was thirsty and drank from a cup of water. Unknowingly, Mamat trapped Cik Ti in a plastic bag and tied it tightly. Cik Ti shouted for help, unable to breathe, and eventually died from lack of air.
Final examination 2
1. The document contains a final-year examination with two sections - Section A contains multiple choice questions about science topics, and Section B contains short answer questions accompanied by figures.
2. Section A asks questions about living things and their needs, life cycles, ways to overcome memory limitations, properties of materials, methods of measurement, planets and their characteristics, and more.
3. Section B includes questions about observations from figures showing experiments with light and objects, methods of historical communication, animal characteristics and defenses, the Solar System, and other science topics. Students are asked to answer questions by referring to the figures provided.
Final examination 1
1. This document contains a final year examination with 30 multiple choice questions and 20 short answer questions with figures/diagrams.
2. The multiple choice section tests knowledge of plants, animals, physics principles and chemistry concepts through visual figures and questions.
3. The short answer section also uses visual figures to test understanding of science concepts like plant and space object properties, experimental design, and relationships between variables. Students must analyze the figures and apply their knowledge to answer questions.
Mid term examination
1. This document contains a mid-term examination with two sections - Section A and Section B. Section A contains 30 multiple choice questions about science concepts. Section B contains short answer questions about science experiments and observations.
2. The questions in Section B include short answer and explanation questions about experiments on plant responses to light, recycling of iron, and students measuring the length of a blackboard using different cubit lengths.
3. Students are required to answer all questions in the exam, which tests their understanding of science concepts like respiration, plant processes, animal protection, materials, time and measurement tools.
Liquid volume quiz
The document is a quiz about measuring liquids and their volumes. It asks 10 multiple choice questions to test knowledge of measuring tools like measuring cylinders and jugs, reading measurement levels, converting between units of ml and liters, and calculating volume amounts. The key questions cover identifying the proper tool for measuring liquid volume, reading the measurement level, converting between ml and liters, and calculating volumes from amounts provided.
More Related Content
Viewers also liked
Materials
The document lists common objects and materials they are made of, including rings (gold), bottles (glass), tables (wood), walls (stone), bracelets (silver), hats (fur), houses (brick), sweaters (wool), bikes (metal), bags (plastic), jackets (leather), books (paper), boots (rubber). It then prompts to complete statements with the correct material, such as erasers (rubber), windows (glass), scarves (wool), schoolbags (plastic), newspapers (paper), bottles (glass), chairs (wood), schools (brick), walls (stone), coats (leather).
Materials and their properties presentation
This document discusses materials and their properties. It defines materials as physical substances used to make things and lists some main categories including metals, plastics, ceramics, glass and fibers. It then discusses properties of materials as descriptions of their characteristics like hardness, strength, flexibility. Examples are given of materials around us and properties are listed. Metals are highlighted as one main group of materials that are shiny, strong, good conductors and usually opaque, with examples like aluminum and copper.
Identify which object can rust
The document lists various common household items including paper clips, towels, iron scissors, aluminum cans, screws, a wooden chair, plastic bottles, and needles. Most of the items are small objects that one would find around the house or office. A few items like the wooden chair and plastic bottle are larger household goods.
Physical or chemical changes
This document lists examples of different chemical and physical changes and asks the reader to identify whether each change listed is a chemical change or a physical change. Specifically, it provides examples such as cutting paper, ice melting, toast burning, rocket fuel burning, sawing wood, metal rusting, a disappearing puddle, and a candle burning and asks the reader to determine if each example represents a chemical change or a physical change.
English for kids - The foods
This document lists common foods in English and Portuguese, including rice, beans, meat, chicken, soup, fish, pasta, and vegetables. It provides basic food vocabulary words translated between English and Portuguese for kids learning the languages.
The rock cycle story
A lava blob cools and hardens into a rock. The rock then experiences the three stages of the rock cycle: it erodes into sediment and is cemented into a sedimentary rock, it undergoes heat and pressure to form a metamorphic rock, then it melts into lava and the cycle repeats. The rock's mother explains that its experiences represented the three main types of rocks - igneous, sedimentary, and metamorphic - and the continuous transformations that make up the rock cycle.
Made of
The document discusses using the phrase "made of" to describe the materials that objects are composed of. It can be used with both singular and plural nouns, and questions about what something is made of are answered with "is made of" or "are made of" depending on whether the noun is singular or plural.
Rock Cycle storyboard
There are three main types of rocks: igneous, sedimentary, and metamorphic. Igneous rocks form when magma cools and hardens. Sedimentary rocks form as rocks erode and the sediment collects and hardens. Metamorphic rocks form when rocks experience pressure and change without melting. Rocks are constantly changing between these three types through the rock cycle.
City, town, village
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms for those who already suffer from conditions like depression and anxiety.
Healthy habits
To maintain good health, one should take care of their digestive, respiratory, circulatory, and locomotor systems by not sitting or standing incorrectly, getting enough sleep and rest, exercising outdoors, eating a balanced diet, drinking water, brushing teeth, and washing food before eating it.
Community helpers
This document introduces several community helpers - doctor, firefighter, teacher, mailman, and police officer - and provides a brief 1-2 sentence description of what each does to help people in the community. The doctor helps sick or hurt people feel better. The firefighter rescues people from fires. The teacher helps people learn in school. The mailman delivers mail to houses. The police officer protects community members.
Natural and man made
The document discusses natural and man-made materials. Natural materials like rocks, logs, sand, and wool are found in nature, while man-made materials require human processing or manufacturing, such as anything made from rocks, paper, plastic, or glass. The document concludes by asking the reader to make a list distinguishing natural materials from man-made ones.
Riya gp life_silk
The document discusses the life cycle of the silk moth. A group led by Shephali Mam and including Riya Joshi, Sanjana, Akash, and K. Kiran examines how female silk moths only come out at night, how silk worms feed on mulberry tree leaves, and how the worms spin cocoons made of silk fibers during their life cycle. The document then asks if the reader enjoyed learning about the silk moth's life cycle.
Going Beyond Leed
This document discusses sustainable and environmentally-friendly window treatments and upholstery fabrics that go beyond LEED certification. It describes fabrics made from organic and natural materials like silk, hemp, linen and wool that are grown and produced sustainably without chemicals or excess energy usage. The document also discusses the company's use of sustainable supplies and practices in its workroom like organic cotton, natural latex foam and recycling of materials.
IND-2012-14 Prestine Public School Saving Silkworm and yet using silk
This document discusses silk production from silkworms and the various uses of silk fabric. It describes the lifecycle of the silkworm from egg to cocoon formation. It notes that silk can be produced without killing the silkworm by using wild silks like Eri silk where the moth chews its way out of the cocoon. The document outlines the major types of silk including Mulberry, Tasar, Muga, and Eri silk. It discusses how silk is used for various textiles, clothing, furnishings and more due to its strength, appearance and other properties. The document provides information on identifying silk through burn testing and its production process from cocoon to textiles.
Spain in 4D
Se trata de una presentación en la que se pueden ver 4 fotografías de aspectos significativos de España. Quiere ser un resumen en imágenes de lo más signficativo
Viewers also liked (17)
IND-2012-14 Prestine Public School Saving Silkworm and yet using silk
IND-2012-14 Prestine Public School Saving Silkworm and yet using silk
More from Annie Pau
Mindpap
Cik Ti, a small animal, emerged from its shelter to search for food but it started raining heavily. It returned to its shelter, a hole near a house, tired and hungry. There was no food left. Cik Ti went into the kitchen looking for food and found some cheese. After eating, it was thirsty and drank from a cup of water. Unknowingly, Mamat trapped Cik Ti in a plastic bag and tied it tightly. Cik Ti shouted for help, unable to breathe, and eventually died from lack of air.
Final examination 2
1. The document contains a final-year examination with two sections - Section A contains multiple choice questions about science topics, and Section B contains short answer questions accompanied by figures.
2. Section A asks questions about living things and their needs, life cycles, ways to overcome memory limitations, properties of materials, methods of measurement, planets and their characteristics, and more.
3. Section B includes questions about observations from figures showing experiments with light and objects, methods of historical communication, animal characteristics and defenses, the Solar System, and other science topics. Students are asked to answer questions by referring to the figures provided.
Final examination 1
1. This document contains a final year examination with 30 multiple choice questions and 20 short answer questions with figures/diagrams.
2. The multiple choice section tests knowledge of plants, animals, physics principles and chemistry concepts through visual figures and questions.
3. The short answer section also uses visual figures to test understanding of science concepts like plant and space object properties, experimental design, and relationships between variables. Students must analyze the figures and apply their knowledge to answer questions.
Mid term examination
1. This document contains a mid-term examination with two sections - Section A and Section B. Section A contains 30 multiple choice questions about science concepts. Section B contains short answer questions about science experiments and observations.
2. The questions in Section B include short answer and explanation questions about experiments on plant responses to light, recycling of iron, and students measuring the length of a blackboard using different cubit lengths.
3. Students are required to answer all questions in the exam, which tests their understanding of science concepts like respiration, plant processes, animal protection, materials, time and measurement tools.
Liquid volume quiz
The document is a quiz about measuring liquids and their volumes. It asks 10 multiple choice questions to test knowledge of measuring tools like measuring cylinders and jugs, reading measurement levels, converting between units of ml and liters, and calculating volume amounts. The key questions cover identifying the proper tool for measuring liquid volume, reading the measurement level, converting between ml and liters, and calculating volumes from amounts provided.
Monthly test 4
This document contains a 20 question multiple choice test on themes related to investigating the Earth, universe, and technology. The questions cover topics such as the solar system, planets, asteroids, comets, the moon, the sun, early forms of communication, and air transportation. Students are asked to choose the correct answer from four options (A, B, C, or D) for each question.
Answers
This document contains sample questions and answers from monthly tests and exams on various science themes. The questions cover topics like living things, forces and energy, materials, Earth and the universe, and technology. The answers provide explanations and reasoning for concepts like plant growth requirements, human respiratory system, animal adaptations, properties of materials, and measurements using different units.
Monthly test 3
This document contains a 30-mark multiple choice section and a 20-mark short answer section about investigating materials. The multiple choice section contains 30 questions about classifying objects based on their material, identifying materials' properties, and understanding recycling processes. The short answer section contains 4 questions about analyzing experiments investigating different materials' properties and the benefits of recycling and reusing materials.
Monthly test 2
This document contains a test with 24 multiple choice questions about measuring force, energy, length, area, and volume. The test covers using and converting between standard metric units like centimeters, meters, kilometers, grams, and liters. It includes questions with diagrams of geometric shapes where the student must calculate dimensions, areas, or volumes. The suggested time to complete this section of the test is 45 minutes.
Monthly test 1
1) The document contains a monthly test on the theme of investigating living things. It has multiple choice questions about basic needs of humans and other living things, as well as their shelter, food, breathing structures and life cycles.
2) The test contains diagrams and figures to illustrate various concepts being assessed such as the basic needs of humans and experiments investigating the needs of plants and animals.
3) Students are asked questions about the inferences that can be made from the experiments as well as correctly matching animals to their breathing structures, shelter and stages in their life cycles.
The solar system
The Solar System consists of the Sun and nine planets that orbit around it. The Sun is the largest object at the center of the Solar System. There are nine planets - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto (no longer considered a planet). Each planet has unique characteristics and orbits the Sun in oval-shaped paths of different sizes depending on their distance from the Sun.
Quiz
The document contains 6 multiple choice questions about animal defenses. Question 1 asks which animal hides in its hard shell when attacked, with options of skunk, crocodile, or tortoise. Question 2 asks which animal can raise its spines when seeing an enemy, with options of spider, porcupine, or cockroach. Question 3 asks what structure moths have to protect themselves, with options of hard scales, false eyes, or sharp spines.
Protection of animals from dangerg
The document discusses six characteristics that help animals protect themselves from danger: sting, sharp spines, sharp claws, hard scales, hard shells, and false eyes. It provides examples of animals that possess each characteristic, such as scorpions and bees that have stings to release poison, porcupines and fish that have sharp spines, and moths that have false eyes on their wings. These characteristics help scare off or injure predators and enemies.
Plant reproduce
Plants reproduce through various methods like seeds, spores, leaves, stem cuttings, underground stems, and suckers to ensure their survival. Examples of plant reproduction through seeds include papaya and durian. Mushrooms and ferns reproduce through tiny spores that are easily spread by wind. Begonias and bryophyllum reproduce through leaves, while hibiscus, roses, and tapioca reproduce via stem cuttings. Sweet potatoes reproduce underground through stems. Bananas and pineapples reproduce using suckers. If plants did not reproduce, they would become extinct.
Worksheet
Extreme weather like hurricanes, tornadoes, and floods can threaten lives and property. It is important to prepare for extreme weather by having an emergency plan and kit ready. During extreme weather, stay informed of warnings and evacuate if advised to do so for safety.
Living in extreme weather use
The document describes five characteristics that help animals survive in extreme hot and cold weather:
1) Animals in hot desert climates, like camels, have humps to store water and food.
2) Desert foxes have long ears to help lose heat in hot weather.
3) Polar bears have thick fur to keep warm in cold polar regions.
4) Animals in cold climates like penguins, walruses, seals and whales have thick layers of fat to insulate against cold.
5) Arctic foxes have small ears to prevent heat loss in frigid Arctic conditions.
Human reproduce
Human reproduce by giving birth to offspring, continuing the process from one generation to the next, which increases the number of people. If humans do not reproduce, the population will decrease, while overreproducing can lead to issues like food and water shortages, lack of living space, high crime, and unemployment due to overpopulation.
Record sheet
This document appears to be an exercise or assignment for students in Year 4 to record their findings from an experiment on the combined uses of materials in a table with three columns for the object, materials used, and properties. The document provides an example table for the students to fill in their own findings.
Combined uses of materials
This document discusses the combined uses of materials in various objects and summarizes their key properties. It examines objects like spectacles, plugs, belts, umbrellas, frying pans, windows, electric irons, shoes and kettles. For each object, it identifies the materials used, such as glass, metal, plastic, leather and rubber, and summarizes their important properties like being transparent, insulating or conducting electricity, flexible, waterproof or able to conduct heat.
Animal excrete and defecate
Animals excrete various waste products from their bodies including urine, sweat, carbon dioxide, and feces in order to remove toxins and undigested materials and regulate body temperature. Excretion through urine, sweat, breathing, and defecation helps animals stay healthy by removing harmful wastes their bodies cannot use.
More from Annie Pau (20)
Combine use of m aterials
- 1. Time for Quiz!! Natural and Man-made Materials
- 2. Natural materials are materials that come from I. plants II. chemical processes III.rocks IV. animals A. I and III only B. I and IV only C. I, II and IV only D. I, III and IV only
- 3. •D Natural materials are materials that come from plants, animals and rocks.
- 4. Which of the following examples of natural and man-made materials are correct? Natural material Man-made material A. Glass Synthetic cloth B. Leather Polystyrene C. Silk Iron D. Plastic Rubber
- 5. •B Leather is natural material while polystyrene is man-made material.
- 6. Which of the following objects is made of natural materials? A. B. C. D.
- 8. Which of the following objects is made of man-made materials? A. B. C. D.
- 9. •C Glass bottle is a man-made material.
- 10. Diagram 1 shows four objects, J, K, L and M. J K L M Which objects are made from materials that come from animals? A.J and K only B. K and L only C. J, K and L only D. J, K and M only
- 11. Fur •D Leather Silk
- 12. Which statements below are correct? I. Man-made materials come from natural materials. II. Metal and plastic are man-made materials. III.Man-made materials are obtained through chemical processes. IV. Plastic is made from petroleum. A.I, II and III only B. I, II and IV only C. I, III and IV only D. II, III and IV only
- 13. •C II. Metal and plastic are man-made materials. II. Metal is a natural material and plastic is a man-made material.
- 14. Which of the following objects is made of natural material? A. Raincoat B. Balloon C. Container D. Straw
- 15. •B Balloon is made of rubber (natural material).
- 16. What are man-made materials? A. Materials that are reused. B. Materials that are produced through recycling. C. Materials make from animals, plants and rocks. D. Materials produced through chemical process.
- 17. •D Man-made materials made through the chemical process.