4. Why are batteries used in solar race cars?

Question

5. When a solar race car is driving fast, where does the energy from the solar panel get used?
6. If the car needs more power than the solar panel makes, where does the car get it?
7. Where do electric cars get their energy from?
8. What happens when an electric car’s batteries run out?
9. How can an electric car not make any pollution?
10. Which type of car is more efficient: a gas-powered car or an electric car?
11. Is gasoline a renewable or non-renewable energy source? What does that mean?
12. What are two effects of air pollution?
13. What is biomass?
14. What are two examples of biomass that can be used for energy?
15. Wind is another form of renewable energy. How can wind be used to help with our transportation needs?
16. What are two disadvantages of depending on fossil fuels for our transportation needs?
17. What are two alternative types of transportation that do not use fossil fuels?
18. List two ways electric cars are different from solar cars.
19. How are solar and electric cars alike?
20. Are gasoline-powered cars more efficient or less efficient than electric cars?
21. How does a model solar car get its power to move?
22. How can an electric car not create any pollution?
23. Copy out the dot points from the passage about solar energy and draw an energy chain representing these changes in energy.

One sentence per question

Answer 1

4. Batteries are used in solar race cars to store the energy produced by the solar panels and provide power to the car when the sun is not shining.
5. When a solar race car is driving fast, the energy from the solar panel is being used to power the motor that moves the car.
6. If the car needs more power than the solar panel makes, it can get additional power from the batteries or from an external charging source.
7. Electric cars get their energy from electricity, which can be generated from a variety of sources such as solar, wind, hydro, or fossil fuels.
8. When an electric car's batteries run out, the car must be recharged by plugging it into an electric power source.
9. An electric car can not make pollution because it does not produce any tailpipe emissions like a gasoline-powered car.
10. An electric car is more efficient than a gas-powered car because electric motors are more efficient at converting energy into motion.
11. Gasoline is a non-renewable energy source, meaning it is finite and will eventually run out.
12. Two effects of air pollution are respiratory problems in humans and damage to the environment.
13. Biomass is organic material that can be used as a source of energy.
14. Two examples of biomass that can be used for energy are wood chips and agricultural waste.
15. Wind can be used to generate electricity which can then be used to power electric cars or to produce hydrogen for fuel cells.
16. Two disadvantages of depending on fossil fuels for transportation needs are air pollution and greenhouse gas emissions contributing to climate change.
17. Two alternative types of transportation that do not use fossil fuels are electric cars and bicycles.
18. Two ways electric cars are different from solar cars are that electric cars can be charged from the electric grid and do not rely solely on solar power, while solar cars use only solar panels for power.
19. Solar and electric cars are alike in that they both use renewable sources of energy and produce fewer emissions compared to gasoline-powered cars.
20. Electric cars are more efficient than gasoline-powered cars because electric motors are more efficient at converting energy into motion.
21. A model solar car gets its power to move from the solar panels on its surface that convert sunlight into electricity to power the motor.
22. An electric car can not create any pollution because it produces zero tailpipe emissions, unlike gasoline-powered cars.
23. (missing)