Earth Science Unit Test

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow.

Front

What is a landslide?

Back

A landslide is a rapid movement of rock, earth, or debris down a slope, often triggered by heavy rainfall or earthquakes.

Front

How do ocean waves affect seashells on the beach?

Back

Ocean waves erode seashells over time, making them smooth or breaking them into smaller pieces.

Front

What is the purpose of a seawall?

Back

A seawall is a structure built to protect the coast from erosion and to prevent damage from waves.

Front

What are dams used for?

Back

Dams are built to control water flow, prevent flooding, and create reservoirs for water supply.

Front

What is the difference between slow and fast changes to Earth's surface?

Back

Slow changes occur over long periods (e.g., erosion), while fast changes happen quickly (e.g., landslides, earthquakes).

Front

What is the role of levees in flood prevention?

Back

Levees are embankments built to prevent river water from overflowing into adjacent land.

Front

What causes water erosion?

Back

Water erosion is caused by the movement of water, which can wear away soil and rock, shaping the landscape.

Front

What is the impact of human activities on coastal erosion?

Back

Human activities, such as construction and deforestation, can accelerate coastal erosion by disrupting natural processes.

Front

What is sedimentation?

Back

Sedimentation is the process by which particles settle out of a fluid, often forming layers of sediment.