Science in our world
Science - Second Grade
All About Energy
Multimedia Lesson
What is Weather?
Presentation
What is Weather?
Presentation
What are Ecosystems?
Presentation
Explore
Presentation
What are Ecosystems?
Presentation
All About Matter
Presentation
All About Energy
Presentation
All About Energy
Presentation
Identifying Weather Instruments
Interactive
Matching Parts of the Ecosystem
Interactive
Tools for Measuring Matter
Interactive
Which are magnetic?
Interactive
Mixtures and Solutions
Interactive
Sources of Energy
Interactive
Renewable and Nonrenewable Energy
Interactive
Science in our world
Study Guide
Science in our world
Quiz
Science in our world
Flash Cards
Science in our world
Worksheet
Science in our world
Game
Science in our world
Vocabulary List
Study Guide Science in our world
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SCIENCE AND TECHNOLOGY IN OUR WORLD What is Technology? Technology is using science in order to solve different problems. Technology uses things we know about science to make tools for people to make doing work easier. Technology can be as simple as a hammer… or as complex as a spaceship! Let’s check what we have learned so far: What kind of knowledge does technology use? Uses of Technology Machines are a kind of technology. Machines make doing a job take less time. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Example: Farmers use machines to plow their fields and to plant seeds. They even have machines that pick some of their crops for them (like corn). Tools are Technology! Tools help us do different jobs and make the job easier to do. Example of tools: A knife helps people cut things. Remember: only ADULTS should use knives. Scissors help cut things, like paper, too. Inventions Many new tools and machines are invented every year. Invent means to make something for the first time. Let’s check what we have learned so far: What does invent mean? A computer is an example of technology that people did not have many years ago. A computer stores, sorts, and organizes information and can do MANY other things too! You may use the Internet on the computer. The Internet is a form of technology too. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Tools and technology are used to help people talk to one another when they are not near each other. When you want to call someone who you are not close to – you call them on the telephone! You can thank technology for your house too! Your house is made up of walls and a roof that were made with technology. You also have special pipes that bring cold and hot water in and out of your house…that is all thanks to technology! Technology Changes Over Time Technology changes many things in our world! We do not live the way people lived 10 years ago because of all the new improvements in technology. What is different now? How we get from one place to another is different! This is called transportation. People used to ride horses to get from place to place. Today we drive cars everywhere! What we drive ON is different too – thanks to the changes in technology! Now we have highways – which did not exist 100 years ago. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
There were trains 100 years ago, but they were not as fast as the trains we have today! Do you like to watch TV? Television is a product of technology too! Television has improved because of new inventions in technology. For example, the picture on TVs used to be in black and white, but now the picture is in color and the picture is SUPER clear! You have seen the television technology change in your life already. Electricity is used to power many types of technology, including machines and tools such as our refrigerators and hair dryers. You know that a long time ago, people used fire to create heat for cooking. Technology has improved over time so that we now use gas, oil, or electricity to cook our food in ovens and on stoves! We are able to know what the weather will most likely be tomorrow because of technology too! Meteorologists are people who study the weather. They use tools and technology like radar to help them figure out what the weather will be like for the next few days. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Let’s check what we have learned so far: Name a technology you have seen change over the years. Why is Technology Important? Technology is very important for many reasons. Here are just THREE reasons: Technology keeps us safe. (in our houses, our cars) Technology supplies us with the things we need to live, such as: • water, through filtration systems and plumbing • food because of farm technology and trucks and trains that bring the food to us. Technology helps us communicate with one another by telephones and computers. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Let’s check what we have learned so far: What is one reason technology is important to us? © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Table Of Contents: All About Energy
1. Lesson Objectives
2.1. All About Energy
2. Engage
3.1. What is Energy?
3.2. Sensing Energy
3. Explore
4.1. Types of Energy
4.2. Energy Sources
4. Explain
5.1. What is Energy?
Energy is the ability to make an object move or cause a change in matter. You can't always see or touch energy, but it is everywhere. To find energy, look for motion, heat, light, sound, or electricity.
5.2. Energy for Life
We use many forms of energy every day. We use energy to heat, cool, run appliances, light our homes, and run our cars. We use the stored energy in food to keep us warm, maintain our bodies, and move about. Other living organisms need energy too. Plants use light, energy to grow and make food.
5.3. Energy from the Sun
The Sun provides most of the energy on Earth. Plants absorb light energy from the Sun and use it to make food stored as chemical energy. The energy stored in plants in turn provides the energy for other living things on Earth. The Sun's energy also provides warmth, powers the water cycle, and makes wind power.
5.4. Sources of Energy
The energy from the Sun also provided the energy to prehistoric plants and animals. When these living organisms died, their remains eventually became fossil fuels, named so, because like fossils, they lived long ago. Examples of fossil fuels include coal and oil. Fossil fuels are very important because when we burn them, they provide most of the energy we use every day!
5.5. Sources of Energy
5.6. Energy in Motion - Kinetic Energy
There are two main types of energy- potential energy and kinetic energy. Kinetic energy is energy that is in motion. A moving car, a bouncing ball, and a spinning top have kinetic energy. In contrast, potential energy is stored energy.
5.7. Stored Energy - Potential Energy
Energy that is stored and ready to go is potential energy. For example, a skier at the top of the hill who is not moving has potential energy, due to gravity. When the skier starts moving downhill, the potential energy changes into kinetic energy. Other examples include the energy stored in a stretched rubber band, food, and wood.
5.8. Potential or Kinetic Energy?
5.9. Chemical Energy
Chemical energy is potential energy stored in the bonds that hold matter together. It is released during a chemical reaction. Food has potential energy. When we digest food, the stored energy from the food is released in the form of kinetic energy and heat. Other sources of chemical energy include wood, batteries, and gasoline.
5.10. Sound Energy
Sound is kinetic energy that is caused by vibrations passing through matter. These vibrations can be carried by air, water, or solid objects. When you pluck a guitar string, the vibration of the string makes air move in waves. This causes movement of our eardrums and we can hear it as sound.
5.11. Light Energy
Light is a type of kinetic energy that we can see. Light is all around us and comes from the Sun, lamps, and many other sources. Light travels as waves in straight lines, except when it strikes an object. Then, it may pass through the object, reflect off of the object, or be absorbed by the object.
5.12. Electrical Energy
Electrical energy is kinetic energy that comes from electric current. Any appliance or device that is plugged into an electrical outlet uses electricity. Electrical energy changes to other forms of energy, like light, when the switch is turned on.
5.13. Thermal Energy
Have you ever wondered what makes something hot? All matter is made up of tiny particles called atoms. These particles within an object start to move as the temperature rises. The movement of these particles in matter produces thermal energy. We feel the flow of thermal energy as heat. Heat naturally flows from a warmer object to a colder object.
5.14. Transfer of Energy
All energy is connected and moves from one form to another. For example, chemical energy in gasoline turns into heat, sound, and motion as it burns. Energy from a soccer player's foot is transferred to the soccer ball as he kicks it, making it move. Energy cannot be made nor destroyed, but it can change form or transfer from one object to another.
5.15. Energy Flow in an Ecosystem
In an ecosystem, which consists of a group of living things and the environment in which they live, plants capture energy from the Sun. When an organism eats the plant the energy is then transferred to that organism. This process is referred to as energy flow. In this food chain example, energy flows from the grass, to the grasshopper, to the frog.
5.16. Energy Sources
The energy we use every day comes from a variety of sources. Fossil fuels, such as oil and coal, are nonrenewable. These energy sources can only be used once and cannot be replaced. Other energy sources, such as solar and wind power energy, are powered by sources that are naturally replaced and are considered limitless. These are called renewable energy sources.
5.17. Renewable and Nonrenewable Energy
5.18. All About Energy
5. Elaborate
6.1. Transfer of Energy
Energy comes in different forms and often we can change one form of energy into another. For example, when you eat food then take a walk, the chemical energy from the food turns into motion.Chemical energy can also change into other forms of energy. In the activity that follows, we will investigate if salt makes ice melt faster.
6.2. Hypothesis
6.3. Procedure
6.4. Analysis
6. Evaluate
7.1. All About Energy
7. Lesson Summary
8.1. All About Energy
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