The earth is built up and torn down in many ways. Physical and chemical weathering are processes which are very important in making soil. Which statement accurately describes an example of chemical weathering?

Sinkholes are formed in central Florida as seeping water dissolves underground limestone rocks

In order for rock to become metamorphic rock, it must be heated and extreme pressure applied.

In Alaska, rocks are broken due to continuous freezing and thawing of water sitting in cracks.

Beautiful and strange rocks, shaped by blowing sand, dot the Western United States landscape.

The illustration below shows a meandering river moving toward the ocean. What most likely happens to the river in the area indicated by the arrow?

The river slows down as it nears the ocean and deposits silt and sediment.

The river is narrowed by mechanical weathering caused by increased rain water.

The river will eventually completely fill in with soil.

The river is widened by deposition.

On October 4, 2005, Hurricane Wilma swept through South Florida causing devastating damage. Thousands of trees were blown over and uprooted. The 125 mph winds blew debris all over the place and in some instances blocking storm drains. This caused the flooding of streets and yards. Along the western coast near Naples, storm surge washed away large areas of the beach and also caused street flooding. Power lines were knocked down and people were without power for days. Which of the following statements correctly identifies the processes involved in the hurricane’s devastation?

The washed away beach represents the damage caused by erosion

The windblown debris, caused by mechanical weathering, resulted in damage

The effects of the flooding reflect damage caused by mechanical weathering.

The uprooted trees are an example of damage caused by erosion.

The illustration below represents the Grand Canyon.

The layers of rock were eroded by the force of the Colorado River.

The layers of rock were broken apart by physical weathering caused by tree roots then blown away by the wind.

The layers of rock were eroded by the strong winds whipping through the canyon.

The layers of rock were eroded by chemical weathering caused by acid rain.

Malik and Jeanine were asked to demonstrate the answer to the question, “How does the slope of a mountain effect the amount of erosion that occurs?” They set up their demonstration, as shown in the illustration below, then measured and recorded the amount of soil eroded down the slopes by the water. The data table shows the average of their results. Which statement best explains how the slope of a mountain affects the amount of erosion?

A higher slope results in more erosion.

The height of a slope has no impact on the amount of erosion which occurs

A lower slope results in more erosion

A higher slope results in less erosion

What is mechanical weathering?

Process through which rocks are physically broken into smaller pieces.

Rocks are broken down through chemical changes.

Rocks are worn away from acid in plant roots.

Rocks broken down by machinery.

Weather erosion and deposition

Authored by Kortne Banks

Science

7th Grade

NGSS covered

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20 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does freezing water cause the weathering of rocks? The freezing water—

keeps the rocks in place.

makes the rocks last longer.

expands cracks and breaks rocks.

causes rocks to fall in landslides.

Tags

NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The process that breaks down rocks and other materials on Earth's surface is called

Weathering

Erosion

Deposition

Decomposition

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Over long periods of time, deposition may change the Earth’s surface by _____.

forming new land features.

breaking down large rocks into smaller ones.

washing away beaches.

moving topsoil.

Tags

NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A delta is an example of

Erosion

Weathering

Sediment

Deposition

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sand dunes are example of

dryness

wind

weathering

deposition

Tags

NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What probably caused the bank of the river to change?

humans

waves

ice

wind

Tags

NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How did this rock change shape?

ice freezing in the cracks

rocks moving in a river

sand blowing in the wind

waves from the ocean

Tags

NGSS.MS-ESS2-2

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Weather erosion and deposition

How does freezing water cause the weathering of rocks? The freezing water—

The process that breaks down rocks and other materials on Earth's surface is called

Over long periods of time, deposition may change the Earth’s surface by _____.

A delta is an example of

Sand dunes are example of

What probably caused the bank of the river to change?

How did this rock change shape?

The process that breaks rocks on Earth is

What is the landform made when rivers deposit sediment where they meet the ocean?

Waves dropping sand on the beach.

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