1. Which of these devices is the only one NOT designed to produce both sound and light energy?

2. A toy oven uses a light bulb to bake small cakes. What types of energy does the toy oven use to bake the cakes?

3. Which objects requires ONLY mechanical energy to perform its main function?

4. A student uses a set of headphones to listen to music. Which of these objects uses the same source of energy as the headphones?

5. Many people ride a bicycle for fun and exercise. Some people ride a bicycle to work because it saves money and benefits the environment by reducing the use of fossil fuels. Which of these is NOT an example of the bicycle using mechanical energy?

6. When a bat searches for prey at night, it makes sounds as it flies, and it uses the sounds echoes to fine its prey. When the bat flies and listens to echoes to locate prey, it uses...

7. Water flows through turbines in dams. The flowing water makes the turbines spin. What type of energy is used to make the turbines spin?

8. A solar panel collects energy from the sun, stores it, and converts it into electrical energy to power homes. What type of energy originates from the sun?

9. Which of the following is the energy source for a flashlight?

10. What is the energy source for plants and photosynthesis?

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