1. Natural Energy Sources

2. Energy from the sun is called
The sun is an important source of energy.
We can use the sun’s natural energy in many ways.
Energy from the sun is called
solar energy.

3. The energy is stored in solar panels.
Solar energy is best used in places that receive a lot of sunlight.
The energy is stored in solar panels.

4. The solar energy from the sun will heat the water!
If you place a cup of water on a windowsill on a bright, sunny day, what will happen to the water?
Hmm. . .think about it!
The solar energy from the sun will heat the water!

5. That means that the energy source can be found in nature.
Solar energy from the sun is a natural resource.
That means that the energy source can be found in nature.

6. Solar energy is not the only natural energy resource.
Wind and water are also found in nature. They can be used to create energy. Wind and water are natural resources.

7. Wind energy is used to create electricity.
Wind energy can only be used in windy places, like on mountains or the plains.
Wind is a natural resource. It is found in nature.

8. Water is also used to create electricity.
Water power that is used to create electricity is called hydroelectric power.

9. Hydroelectric power can run mills that produce energy.
Dams use moving water to make electricity in places where there are large bodies of water.
Oops! Wrong kind of body!
Hydroelectric power can run mills that produce energy.

10. So far we’ve learned about 3 kinds of natural resources:
The sun
solar panels
Wind
windmills
Moving water
dams

11. Trees! Let’s learn about another natural resource:
We get wood from trees.
We can burn wood to get fuel for energy.

12. Wood is a natural resource.
That means it is found in nature.
Wow! This is fun!

13. So far we’ve learned about 4 natural sources of energy:
the sun
water
wind
trees
Let’s learn about another energy resource that is found in nature.

14. 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.

15. Some examples of fossil fuels:
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

16. Where can we find fossil fuels?
We can find these natural resources under the ground!

17. Now that we have learned about different kinds of natural resources, let’s look at resources a different way.

18. We can divide resources into 2 categories:
Let’s divide types of resources by how long it takes us to get more…
We can divide resources into 2 categories:
Renewable
Nonrenewable

19. Nonrenewable Resources
take longer than a human lifetime to replace
can be replenished in a human lifetime

20. Nonrenewable Resources
Sun
Wind
Water
Fossil fuels

21. We renew our water through the water cycle!
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!

22. In this lesson... You’ve learned about 5 natural sources of energy :
1. The sun
2. Wind
3. Water
4. Trees
5. Fossil Fuels

23. We can also look at energy sources a different way.
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.

24. We can group energy sources according to how long it takes to renew them.
Renewable sources
Nonrenewable sources

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

26. Renewable Energy Renewable Energy Inexhaustible Resources Sun
Solar Energy
Moving water
Hydroelectric (Dams)
Tidal energy
Geothermal
Wind
Wind Turbines
Bio Energy
Biomass & Bio fuel
Water
Renewable through our water cycle
Plants
Trees, plants for food, plants for clothing, etc…
Animals
Food, clothing, etc…
Renewable Energy

27. More about Renewable Energy
Wind Energy: Generates electricity by using the wind.
Geothermal: Generates electricity from steam produced by water heated within the earth. (Geo means Earth)
Hydrogen Energy: Use flowing water to generates electricity. (Hydro means water)
Bio Energy: Use biomass (plant materials, landfill or animal waste) to produce heat or electricity. (Bio means Life)
Ocean Energy:
   Wave Energy: Produce electricity from the power of waves.    Tidal Energy: Traps water in dams to supply to hydropower generators.

28. Nonrenewable Energy Nonrenewable Energy Fossil Fuels Minerals & Metals
Coal
Oil
Natural Gas
Soil
Minerals & Metals
Copper and other metals mined.
Uranium (used for Nuclear Power)

29. More about Non Renewable
Fossil fuels like coal, oil and gas
Minerals like copper
Nuclear Energy uses uranium that is mined and can not be replaced in our lifetime.
Soil is considered Non Renewable because of the length of time it takes to break down rock and add organic materials to make new soil.
These resources are mined and exhausted. The supply of fossil fuel is depleting fast and cannot be reproduced/ renewed.
For this reason, it has become necessary to look for alternatives energy sources.

30. So now you are an expert about natural energy sources!
End of slideshow!