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Exploring Earth's Dynamic Features: Landforms and Agents of Change

Delve into Earth science to uncover the physical features on the Earth’s surface, including landforms shaped by water, wind, ice, and mass movement. Learn about weathering, erosion, deposition, and how these processes sculpt our planet's landscapes.

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Exploring Earth's Dynamic Features: Landforms and Agents of Change

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  1. Earth Science Review

  2. What are physical features on the earth’s surface?

  3. Landforms

  4. What are the four agents that constantly change the earth’s landforms?

  5. Water • Wind • Ice • Mass movement

  6. What is weathering?

  7. The process of breaking rock into silt, sand, clay, and other tiny pieces

  8. What are these tiny pieces called?

  9. Sediment

  10. How does water weather rocks?

  11. Rivers can carve deep canyons • Ocean waves can weather cliffs • Freezes in cracks and expands breaking the rock apart • Acid rain dissolves rock • Tumbles rocks into each other

  12. What is erosion?

  13. The process of moving sediment from one place to another

  14. What is the process called of dropping it into a new location?

  15. Deposition

  16. How does water erode sediment?

  17. Waves take the sediment from the cliffs to the beach • Rainfall carries it to rivers and streams • Rivers carry it to their banks • Some rivers carry it to their mouths

  18. What is a delta?

  19. The new land that has been deposited in a triangle shape near the mouth of a river

  20. What does wind erode more quickly?

  21. Dry soil instead of wet soil

  22. Where is this greatest?

  23. Where there is little plant life to hold sediment in place

  24. What unusual landforms can wind erosion create?

  25. Tables • Arches • Columns

  26. What are dunes?

  27. Large mounds of sand

  28. What are beach dunes caused by?

  29. The constant blowing of the sea breeze

  30. What are glaciers?

  31. Large thick sheets of ice formed when more snow falls during the winter than melts in the summer

  32. Why does a glacier erode everything under it?

  33. It’s great size and weight

  34. What are the two kinds of glaciers?

  35. Valley and Continental

  36. Where are valley glaciers found?

  37. High in mountain valleys

  38. How do they erode?

  39. They flow slowly down the mountainsides

  40. What do they form?

  41. A U-shaped valley

  42. How many are left?

  43. Very few and these are melting quickly

  44. What are continental glaciers?

  45. Thick sheets of ice that cover large areas of the Earth

  46. What is mass movement?

  47. The downhill movement of rock and soil because of gravity.

  48. Give some examples of mass movement

  49. Mudslides • Landslides • Avalanches • Sinkholes

  50. How does a landslide or mudslide occur?

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