1. © A. Weinberg SOL 3.11 Energy Sources By Ms. Weinberg

2. © A. Weinberg Did you ever skip a meal and find that you were too tired to do much of anything? Why do our bodies need food?

3. © A. Weinberg We need food______________________. People are alive, and all __________ and ______________________on Earth need________________ The _______________of almost all ________________________energy on Earth is the sun!

4. © A. Weinberg The sun is an _____________________of energy. ______________________________in many ways. _________________ ______is called ________ _____.

5. © A. Weinberg ___________ _____is best used in places that________ ___________ ___________ __. The ___________is _____________ in solar panels.

6. © A. Weinberg If you place a cup of water on a windowsill on a bright, sunny day, what will happen to the water? The _____________from the sun will________________ _ Hmm...think about it!

7. © A. Weinberg Solar energy from the sun is a_______________________. That means that the energy source__________________ __________.

8. © A. Weinberg Solar energy is not the only natural energy resource. _______________________are also found in nature. They can be used to create energy.___________________________ _________.

9. © A. Weinberg Wind energy is used to create electricity. _______________can only be used in windy places, _____________________ Wind is a__________________. It is found in_______________.

10. © A. Weinberg Water is also used to create electricity. __________________that is used to __________________is called ___________________________ power.

11. © A. Weinberg ___________________________ _to make _______________in places where there are large bodies of water. Hydroelectric power can________________________ ________________ Oops! Wrong kind of body!

12. © A. Weinberg So far we’ve learned about 3 kinds of natural resources: The sunsolar panels Windwindmills Moving waterdams

13. © A. Weinberg Let’s learn about another natural resource: We get_______________________. We can ______________________for energy.

14. © A. Weinberg Wood is a_____________________. That means it is______________________. Wow! This is fun!

15. © A. Weinberg So far we’ve learned about______________________________ ________ the ______ _______ _ Let’s learn about another energy resource that is found in nature.

16. © A. Weinberg Let’s learn about fossil fuels, which are also natural resources. Fossil fuels are formed from the remains of plants and animals that lived and died long ago.

17. © A. Weinberg Over time, the remains of dead plants and animals are changed into energy-rich fuels, called fossil fuels. Some examples of fossil fuels: petroleum (oil) coal natural gas gasoline

18. © A. Weinberg Where can we find fossil fuels? We can find these natural resources under the ground!

19. © A. Weinberg let’s look at resources a different way.

20. © A. Weinberg Let’s divide types of resources by how long it takes us to get more… We can divide resources into 2 categories: RenewableNonrenewable

21. © A. Weinberg Renewable Resources Nonrenewable Resources can be replenished in a human lifetime take longer than a human lifetime to replace

22. © A. Weinberg Renewable Resources Nonrenewable Resources Sun Wind Water Fossil fuels

23. © A. Weinberg As you can tell, it takes longer to get more of the nonrenewable resources. That’s why we need to conserve our nonrenewable resources. We need to use them wisely and not waste them. We renew our water through the water cycle!

24. © A. Weinberg You’ve learned about 5 natural sources of energy : 1. The sun2. Wind 3. Water 4. Trees5. Fossil Fuels

25. © A. Weinberg Those 5 sources are called natural sources of energy because they are found in nature. We can also look at energy sources a different way.

26. © A. Weinberg We can group energy sources according to how long it takes to renew them. Renewable sources Nonrenewable sources

27. © A. Weinberg Renewable sources can be renewed in a human lifetime. Nonrenewable sources take longer than a human lifetime to renew. sun wind water fossil fuels

28. So now you are an expert about natural energy sources!