4th Grade-Ch. 10 Lesson 1 What are natural resources

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4th Grade-Ch. 10 Lesson 1 What are natural resources

  1. 1. Ch. 10 Lesson 1 What are natural resources?
  2. 2. natural resources <ul><li>living & nonliving supplies that nature provides </li></ul>water sunlight animals
  3. 3. natural resources
  4. 4. renewable resources <ul><li>can be replaced </li></ul><ul><li>won’t run out </li></ul>
  5. 5. Renewable Resources [04:02]
  6. 6. solar energy <ul><li>energy from sun </li></ul><ul><li>renewable </li></ul>
  7. 7. soil <ul><li>created by weathering, erosion & deposition </li></ul><ul><li>covers most of Earth’s land surface </li></ul>
  8. 8. <ul><li>important to conserve soil-takes 1,000 yrs. to renew soil </li></ul>
  9. 9. soil layers topsoil top layer of soil-contains humus subsoil near surface-made of soil & small rocks bedrock made up mostly of solid rock
  10. 10. humus <ul><li>decomposing (decayed) plant & animal remains in soil </li></ul>
  11. 11. Living things break down plant and animal remains into nutrients that plants can use.
  12. 12. types of soil <ul><li>clay </li></ul><ul><li>silt </li></ul><ul><li>sand </li></ul>
  13. 13. 1. clay <ul><li>smallest particles </li></ul><ul><li>used to make tile, bricks & pottery </li></ul>
  14. 14. 2. silt <ul><li>slightly larger particles than clay </li></ul>
  15. 15. 3. sand <ul><li>largest particles </li></ul><ul><li>most common mineral=quartz </li></ul><ul><li>used to make glass </li></ul>
  16. 16. Sandy soil is not good for growing plants because water runs through it.
  17. 17. Best soil for plants is the right mixture of clay, silt, sand & humus with many nutrients.
  18. 18. Review Time
  19. 19. natural resources <ul><li>supplies that nature provides </li></ul>
  20. 20. renewable resources <ul><li>resources that can be replaced </li></ul>
  21. 21. types of soil <ul><li>clay </li></ul><ul><li>silt </li></ul><ul><li>sand </li></ul>
  22. 22. clay <ul><li>smallest particles </li></ul>
  23. 23. sand <ul><li>largest particles </li></ul>
  24. 24. Good soil for plants is the right mixture of clay, silt, sand and humus with ______________nutrients. many
  25. 25. sand <ul><li>most common mineral=quartz </li></ul><ul><li>used to make glass </li></ul>
  26. 26. silt <ul><li>slightly larger particles than clay </li></ul>
  27. 27. clay <ul><li>used to make tile, bricks & pottery </li></ul>
  28. 28. Getting to Know Soil 23:00

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