weathering involves a change in the mineral composition of a rock. * 1 point
2. is a type of physical weathering. It occurs when water freezes in a cracked rock. *
1 point
3. is a type of chemical weathering. It occurs when acidic rainwater eats into rock. *
1 point
4. Earth's surface is constantly being built up and torn down by weathering, erosion, and deposition. Identify the process each example best describes. *
3 points
Weathering Erosion Deposition
A boulder breaks up into smaller pieces of rock.
A barrier island appears in the ocean.
A glacier carves a valley as it carries away sediment.
A boulder breaks up into smaller pieces of rock.
A barrier island appears in the ocean.
A glacier carves a valley as it carries away sediment.
5. What type of landform is shown forming in this diagram? *
1 point
Captionless Image
canyon
barrier island
sinkhole
sea stack
6. Which image best models how deposition changes features on Earth? *
1 point

Option 1

Option 2

Option 3
7. Iguazu Falls, the largest waterfall system in the world, is shown below. Which type of weathering occurs as water falls down Iguazu Falls? *
1 point
Captionless Image
Ice wedging
Cracks from temperature changes
Abrasion
Breaking apart by plants and animals
8. The image below shows the Lake Mead Recreation Area, which is near the Grand Canyon. The diagram shows the ages of layers of rock in one region of the park. The layers at this location are fairly smooth and distinct. What are these smooth, direct layers most directly evidence of? *
1 point
Captionless Image
Soil creep along the rocky cliffs
Many landslides and mudslides
Extensive chemical weathering
Many, many years of deposition
9. The image below shows a river delta in Sweden. Which process directly results in the formation of a delta? *
1 point
Captionless Image
water erosion
wind deposition
water deposition
wind erosion
10. Match the statement with the type of weathering. *
3 points
Physical Chemical
weathering usually requires a lot of liquid water.
Abrasion and ice wedging are examples of weathering.
It is common in cold, dry climates.
weathering usually requires a lot of liquid water.
Abrasion and ice wedging are examples of weathering.
It is common in cold, dry climates.
11. Which event is not likely to result in physical weathering? *
1 point
A boulder rolls off a cliff and drops 50 feet to the ground below.
The Sun shines on a rock that contains iron.
Water from a rainstorm freezes in cracks in rock.
The roots of a bush push their way into a rock.
A paved street gets hot during the day and cools during the night.
12. Do processes of erosion happen slowly or quickly? Use the evidence in the two images to support your answer. *
2 points
Captionless Image
Earth changes in its own natural ways. Some changes are due to slow processes, such as erosion and weathering, and some changes are due to rapid processes, such as landslides, volcanic eruptions, Tsunamis and earthquakes.
13. Mountains are gradually weathered over time. As a mountain's rock is broken down and the sediment is carried away, what do you think happens to the mountain? *
1 point
It regrows.
It gets larger.
It gets smaller
It moves to a new place.
14. In 1927, this dam was built across the Elwha River in Washington State. This caused the river's delta to shrink. Why do you think this happened? *
1 point
Captionless Image
The dam kept sediments from being carried downstream and deposited.
The dam caused the river to empty into a different area.
The dam caused the river's water to flow faster and erode more materials.
15. In one part of the United States, winds carried sediment downhill from mountains. Then the winds hit a barrier and slowed down. The sediment dropped out. Which landform was most likely formed by this action? *
1 point

Option 1

Option 2

Option 3