Earth Science: Unit 3 Test Review

Front

What happens to much of the water that falls on the ground as precipitation?

Back

Much of the water enters the ground through the process of filtration.

Front

What increases the rate of chemical weathering of a rock?

Back

Increasing the total surface area of the rock.

Front

What is true about wind transport?

Back

Wind transport and erosion primarily occur in areas with little vegetative cover.

Front

How are V-shaped channels like the Grand Canyon formed?

Back

They are formed by stream downcutting.

Front

What is the formula to calculate the average discharge of a river?

Back

Average discharge = width x depth x velocity.

Front

If a river has an average width of 8 m, an average depth of 5 m, and an average velocity of 2 m/s, what is its average discharge?

Back

80 m³/s.

Front

What is chemical weathering?

Back

Chemical weathering is the process by which rocks break down due to chemical reactions, often involving water and atmospheric gases.

Front

What role does vegetation play in erosion?

Back

Vegetation helps to stabilize soil and reduce erosion by wind and water.

Front

What is runoff?

Back

Runoff is the flow of water, from rain or melting snow, that moves across the ground and returns to bodies of water.

Front

What is the significance of stream gradient in river formation?

Back

Stream gradient affects the speed of water flow and the ability of a river to erode its banks and bed.