Twenty Questions

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Twenty Questions

• Erosion and Deposition

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Twenty Questions
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1. What do contour lines that are close together
mean?

• The slope of the land in that area is steep.

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2. What is the change/difference in elevation
between adjacent (neighboring) contour lines?

• Contour interval

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3. What do we call areas that have landforms
that have not changed much over time?

• Stable areas

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4. How is a delta built?

• Sediments are carried downhill by a flowing river
  are dropped at the mouth of the river where they
  pile up and create new land.

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5. What is weathering?

• Weathering is the earth process that breaks rocks
  into smaller pieces called sediments.

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6. What is erosion?

• Erosion is the movement of sediments from one
  place to another by water, wind, or ice?

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7. What is deposition?

• Deposition is when the sediments are left.

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8. Is soil that is loose or compact more likely
to erode?

• Soil that is loose is more likely to erode.

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9. Why do you think granite on a mountaintop
likely erode differently than granite found on a
sea cliff?

• Granite on a mountaintop will erode due to rain,
  while granite on a cliff will erode from waves.
  It is likely that the cliff will erode faster
  because the oceans waves are more powerful and
  cause more erosion.

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10. How can construction and farming affect the
land?

• Increases erosion
• Makes land unstable

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11. What landform is formed when the
constructive force of deposition is greater than
the destructive force of erosion?

• Delta

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12. What landform is formed when the destructive
force of erosion is greater than the force of
deposition?

• Cliff

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13. What landform is created when there is a
balance with the constructive force of deposition
and the destructive force of erosion?

• Beach

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14. What is one of the two mitigation methods we
learned that reduces deposition?

• Dredging or jetty

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15. What is one of the two mitigation methods we
learned that reduces erosion?

• Breakwater or seawall (or riprap)

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16. What is a stream of water in the ocean that
runs parallel to the shore and moves across the
face of the beach?

• longshore current

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17. Which earth process typically follows
weathering?

• erosion

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18. Which earth process typically follows
erosion?

• deposition

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19. At which landform in Boomtown would you
expect to find the most fertile soil?

• Delta Marsh

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20. Name a landform that is produced from
erosion.

• Canyon
• Caves
• Channel
• Valley
• Hilltop