4th Grade Ch 10 Lesson 1 What Are Natural Resources

Ch. 10 Ch. 10 Lesson 1Lesson 1What are What are natural natural

resources?resources?

natural resourcesnatural resourcessupplies that nature provides

natural resourcesnatural resources

renewable renewable resourcesresources

can be replaced

Renewable Resources [04:02]

solar energysolar energyenergy from sunrenewable

soilsoilcreated by weathering,erosion & deposition

Different types of Different types of rocks and minerals rocks and minerals are found in soil.are found in soil.

important to conserve soil-takes

1,000 yrs. to renew soil

soil layerssoil layerstopsoil top layer of soil-

contains humus

subsoil near surface-made of soil & small rocks

bedrock made up mostly of solid rock

humushumusdecomposing plant & animal remains in soil

Living things break down plant Living things break down plant and animal remains into and animal remains into

nutrients that plants can use.nutrients that plants can use.

types of soiltypes of soil

1. clay

2. silt

3. sand

1. clay1. claysmallest particlesused to make clay, tile & bricks

2. silt2. siltslightly larger particles than clay

3. sand3. sandlargest particlesmost common mineral=quartz

used to make glass

Good soil for plants is the right mixture of clay, silt, sand and humus with many nutrients.

Review TimeReview Time

natural resourcesnatural resourcessupplies that nature provides

renewable renewable resourcesresourcesresources that can

be replaced

types of soiltypes of soil

1. clay

2. silt

3. sand

clayclaysmallest particles

sandsandlargest particles

Good soil for plants is the right mixture of clay, silt, sand and humus with ______________nutrients.

many

sandsandmost common mineral=quartz

used to make glass

siltsiltslightly larger particles than clay

clayclayused to make clay, tile & bricks

Getting to Know Soil 23:00