December 11, 2014
Changes to the Land Test Question Review
1. What causes slow changes to the Earth’s surface?
Water, wind, and ice cause slow changes to the Earth’s surface.
2. What landform was created by wind?
A sand dune was created by wind.
3. What landform was created by moving water?
A canyon and a delta were created by moving water.
4. What landform was created by the glacier (ice)?
A U-shaped valley was created by the glacier.
5.Describe how the Grand Canyon was formed.
Over millions of years the Colorado River flowed over the land and eroded away the rock.
6. Distinguish between rapid changes to the Earth’s surface and slow changes.
Rapid changes are caused by volcanoes, earthquakes, landsides, hurricanes, tsunamis, floods, and tornados. The land can be dramatically different from one day to the next. These are usually catastrophic events. Wind, water, and ice make slow changes to the Earth that usually occur over an extended amount of time. The changes are very gradual.
7. Compare how a volcano and a glacier change the land.
A volcano changes the land quickly. The volcano eruption destroys land, but the lava flow creates new land. A glacier moves very slowly and changes the land slowly. A glacier will erode land and move it to new areas.
8.Predict what the Mississippi River delta will look like 1,000 years from now.
The delta will be continually growing.
9. What are ways that we can prevent water, wind or ice from changing the land?
Possible answers might be to plant vegetationto hold down the soil or build dams to slow water flow.
10. If you go to the beach where a river meets the ocean, sometimes you will see both sand dunes and a delta. How do the formations of these two landforms differ? How are they the same?
Sand dunes and deltas both result from deposits of soils. Sand dunes result from wind moving sand, while deltas mainly result from a river carrying sediment and depositing it at the mouth.
11. The sides of canyons show millions of years of Earth’s history. Describe how a river is involved in the formation of a canyon. Then, describe the layers that are exposed on the canyon wall and what the layers say about Earth’s history.
A river starts slowly breaking down the land it is running through over thousands of years ago. The rock layers the river exposes show a history of the surface of this area. Each layer is from a certain time period and the type of rock of each layer tells a different story of time from the area’s past.