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Science Chapter 8 Conserving Resources

Science Chapter 8 Conserving Resources. Lesson 1 (pp. 262-269). A resource is a material found in nature that is used by living things. One resource above the ground is air. A resource below the ground is oil.

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Science Chapter 8 Conserving Resources

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  1. Science Chapter 8Conserving Resources

  2. Lesson 1 (pp. 262-269) • A resource is a material found in nature that is used by living things. • One resource above the ground is air. A resource below the ground is oil. • Renewable resources can be replaced during a lifetime. (Examples: plants, animals, trees) • Reusable resources can be used again and again. (Examples: air and water) • Nonrenewable resources cannot be replaced in a lifetime. When they are used up, there will be no more. (Examples: coal, soil, metals)

  3. Lesson 2 (pp. 270-277) • Soil is an important resource made of water, air, humus, and tiny pieces of rock. • Humus is made of dead plants and animals. • There are 3 different layers of soil: topsoil, subsoil, and bedrock. Science Up Close: (Watch this to learn about the layers of soil) http://www.harcourtschool.com/activity/science_up_close/309/deploy/interface.html • Sand, silt, and clay are types of soils. Clay has very, very tiny grains of rocks. • Loam is a mixture of humus, clay, silt, and sand. • Most soils found on farms are loam.

  4. Lesson 3 (pp. 278-285) • The land we live on is an important resource. • Metals, gemstones, and coal are dug up, or mined, from the land. -- What are some positive and negative effects people can have on the land??? • Pollution is any harmful material in the environment. • Pollution can happen to the land, water, or air. • Pollution in the air and land can get into the water when there is rain.

  5. Lesson 4 (pp. 286-293) • To protect Earth’s resources, we must conserve. • Conservation is saving resources by using them wisely. • We can use the 3 R’s: • 1.)reduce- use less resources (take showers not baths, turn off the TV when you aren’t watching) • 2.) reuse- use a resource again and again (wear older siblings clothes, reuse toys) • 3.)recycle- break a product down or change it to make something new (Plastic can be recycled into benches, doormats, and much more.)

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