Unit 7 Review: Weathering, Erosion, and Deposition (4th Grade)

Which process happens when rocks are broken into smaller pieces by wind, water, or ice?

• erosion

• weathering

• deposition

• melting

When a river slows down as it enters a lake, sediment often settles to the bottom. Why does this happen?

• The slower water cannot carry the sediment anymore

• Animals push the sediment down

• The sediment disappears in the water

• The lake water freezes the sediment

Over time, rainwater seeps into cracks in rocks. When the water freezes, it expands and makes the cracks larger. What process is this an example of?

• erosion

• deposition

• weathering

• evaporation

A river slowly carries soil from one place to another over many years. What is this process called?

• weathering

• erosion

• deposition

• melting

Sand builds up along a beach near a rock wall that was built in the water. What process caused the sand to pile up?

• weathering

• erosion

• deposition

• cracking

Which of the following is a slow change to Earth's surface?

• an earthquake

• a landslide

• a volcanic eruption

• wind smoothing rocks in the desert

Tags

NGSS.MS-ESS2-2

AAfter a heavy rain, soil from a hill is carried downhill and into a stream. Which process caused the soil to move?

• weathering

• erosion

• deposition

• freezing

Beaches, deltas, and valleys usually form because of —

• quick events like earthquakes

• slow processes over many years

• heat deep inside Earth only

• sudden changes from storms only

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

NGSS.MS-ESS2-1

Why do scientists repeat experiments when studying erosion?

• to use more materials

• to get accurate data

• to finish faster

• to change the experiment

Tags

NGSS.MS-ESS2-2

Which change to Earth’s surface usually takes hundreds or thousands of years?

• a flood covering a road

• an earthquake shaking the ground

• a river forming a wide valley

• a thunderstorm passing through

Tags

NGSS.MS-ESS2-2