1A Earth Processes Summative Assessment

What is an example of a landform created by erosion?

• A canyon

• A mountain

• A plateau

• A valley

What is the difference between weathering and erosion?

• Weathering is the movement of rocks, while erosion is the breaking down of rocks.

• Weathering is the breaking down of rocks, while erosion is the movement of those broken pieces by natural forces.

• Weathering and erosion are the same processes that occur simultaneously.

• Weathering is the process of creating new rocks, while erosion is the process of destroying them.

What can increase the risk of erosion on a hillside?

• Heavy rainfall

• Planting more trees

• Building retaining walls

• Using less water

What happens to erosion when trees are removed from a hillside?

• Water erosion decreases due to less water runoff.

• Water erosion remains the same regardless of tree removal.

• Water erosion increases because there are fewer roots to hold the soil in place.

• Water erosion is eliminated completely when trees are removed.

How do animals contribute to weathering?

• By burrowing into the ground, which can break apart rocks and soil.

• By creating nests that protect the soil from erosion.

• By consuming plants that help hold the soil together.

• By migrating and changing the landscape over time.

What are some examples of agents of erosion?

• Water, wind, ice, and gravity

• Sunlight, heat, pressure, and humidity

• Plants, animals, rocks, and soil

• Electricity, magnetism, sound, and light

How does ice cause erosion?

• Ice causes erosion by melting and washing away soil.

• Ice can cause erosion through freeze-thaw cycles, where water seeps into cracks, freezes, expands, and breaks the rock apart.

• Ice erodes rock by creating large icebergs that crash into land.

• Ice causes erosion by forming glaciers that scrape the ground.

What is physical weathering?

• The process of breaking down rocks into smaller pieces without changing their chemical composition.

• The chemical alteration of minerals within rocks due to environmental factors.

• The transportation of sediments from one location to another by wind or water.

• The formation of new minerals through the cooling of magma.

What natural event can lead to landslides?

• Earthquakes causing ground shaking

• Too much rain soaking the ground

• Volcanic eruptions releasing lava

• Strong winds uprooting trees

What is the main cause of the Grand Canyon's formation?

• Volcanic activity

• Water erosion over millions of years

• Tectonic plate movement

• Glacial activity