Weathering/Erosion/Deposition Flashcard

Front

Which process breaks down rocks into smaller pieces without changing their chemical composition?

Back

Weathering

Front

What is the main agent responsible for the erosion of soil in river valleys?

Back

Water

Front

Which term describes the process by which sediments are laid down in new locations?

Back

Deposition

Front

What is the name for the breaking down of rocks by chemical reactions, such as acid rain?

Back

Chemical weathering

Front

Which of the following is an example of physical weathering?
Iron in rocks rusting,
Water freezing in cracks and breaking rocks apart,
Limestone dissolving in acid rain,
Plant roots producing acids

Back

Water freezing in cracks and breaking rocks apart

Front

How does wind contribute to the process of erosion?

Back

By carrying away small particles from the surface

Front

Which scenario best demonstrates deposition? A glacier scraping rocks as it moves, A river dropping sand to form a delta, Rainwater breaking down limestone, Wind blowing dust off a field

Back

A river dropping sand to form a delta

Front

Why does deposition often occur when a river enters a lake or ocean?

Back

The water slows down, dropping its sediment load.

Front

A farmer notices that after heavy rainfall, the topsoil from his field has moved to a nearby stream. Which combination of processes best explains this observation?

Back

Erosion and deposition

Front

Given a hillside with exposed rock, predict what will happen over time if the area experiences frequent freeze-thaw cycles and explain your reasoning.

Back

The rock will break apart due to mechanical weathering from freeze-thaw cycles.