Unit 5 Lesson 1 Natural Resources Copyright © Houghton Mifflin Harcourt Publishing Company
May 25, 2015
Unit 5 Lesson 1 Natural Resources
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 5 Lesson 1 Natural Resources
Indiana Standards
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• 8.2.7 Recognize that some of Earth’s resources are finite and describe how recycling, reducing consumption and the development of alternatives can reduce the rate of their depletion.
It’s Only Natural
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What are natural resources?
• A natural resource is any natural material that is used by humans, such as air, soil, minerals, water, petroleum, plants, and animals.
• Earth’s natural resources provide everything needed for life, including energy, water, food, and building materials.
Unit 5 Lesson 1 Natural Resources
How can we categorize natural resources?• Natural resources are used to make products that
make people’s lives more convenient.
• There are many types of natural resources.
• Natural resources can be categorized by how quickly they can be replaced.
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Unit 5 Lesson 1 Natural Resources
How can we categorize natural resources?• A renewable resource is a natural resource that
can be replaced at the same rate at which it is being consumed.
• Some renewable resources, such as trees, can be used up too quickly.
• Some renewable resources, such as the sun, are considered inexhaustible resources.
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Unit 5 Lesson 1 Natural Resources
How can we categorize natural resources?• A nonrenewable resource is a resource that
forms at a rate much slower than the rate at which it is consumed.
• For example, a fossil fuel is a nonrenewable resource formed from buried remains of plants and animals that lived long ago.
• Once a nonrenewable resource is used up, humans will have to find other resources to use instead.
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Unit 5 Lesson 1 Natural Resources
Material World
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How do we use natural resources?
• A variety of natural resources are used to make common objects.
• The energy required for many of our activities also comes from natural resources.
• Natural resources can be divided into material resources and energy resources.
Unit 5 Lesson 1 Natural Resources
How do we use natural resources?
• A material resource is a natural resource that humans use to make objects or to consume as food or drink.
• Material resources include oxygen provided by Earth’s atmosphere, minerals and rocks in Earth’s crust, plants such as cotton, and animals that provide food products.
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Unit 5 Lesson 1 Natural Resources
How do we use natural resources?
• An energy resource is a natural resource that humans use to generate energy.
• Most of the energy humans use comes from fossil fuels.
• When fossil fuels are burned, they release energy in the form of heat.
• The heat released is used by power plants to generate electrical energy.
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Unit 5 Lesson 1 Natural Resources
How do we use natural resources?
• Other energy resources include moving water, solar power, and wind power.
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Unit 5 Lesson 1 Natural Resources
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 5 Lesson 1 Natural Resources
How do we use natural resources?
• Trees, when they are burned, supply fuel in the form of heat.
• Horses and other animals are used as transportation in some places.
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Unit 5 Lesson 1 Natural Resources
Identify the types of natural resources in the picture.