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science grade 4 lesson 4

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Lesson 4
Natural Recourses: are materials found in nature that are used by
livings things.
Example… plants, water, sun light, wind, animals.
Renewable Resources: are natural resources that can be replaced
quickly.
Conservation: the use of natural resources wisely. (be smart when use
resources or they will not get renewed)
Example: if we eat too much fish, there won’t be any fish left to
reproduce and create more fish.
Non-renewable resources: are natural resources that aren’t replaced
easily or will take 1000, 1,000,000 years to replace them
Example: oil, fossil fuels, natural gas and coal
Note: oil is found deep underground and then is pumped and refined
before it can be used.
A mineral: is a non-living solid with a crystal form
A ore: A rock that contains a valuable minerals
What do we use land for?
Mining
Food production
Dairy farms
Green energy
Forests are used for lumber
Lumber is used to make paper and furniture
Green energy or energy generated using renewable resources such as:
Wind farms, Solar cells and hydroelectric dams.
Fossil fuels: non-renewable energy such as coal, oil and natural gas
Soil: non- renewable resource that people use to grow crops
Mineral: non renewable resource non living solid with a crystal form
and it takes a long time to form and once hey are all removed from a
mine there are none left.
A Rock: A non renewable resource solid substance made of one or
more mineral and it takes a long time to form and once it have been
moved from a mine they are none left
Watershed: an important natural resource that is home to many living
things
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