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

expands cracks and breaks rocks

causes rocks to fall in landslides

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.

During chemical weathering, what can happen to the type of rock that has undergone chemical weathering?

a new rock is produced that is different from the original rock

a new rock is produced that is larger than the original rock

a new rock is produced that is the same as the original rock

no new rock is created - it is just smaller in size

The diagrams shows a natural process that weathers rock. Which statement best explains why this process results in weathering ?

the mass of water increases when it freezes

frozen water dissolves most types of rock

What type of weathering is it when acid rain breaks down and changes the rock.

physical or mechanical weathering

tiny pieces of weathered rock carried by wind or water

How do plants weather rocks?

when roots grow into cracks of rocks and expand the rock

when the plant moves water from the roots to the leaves

a material that is full of tiny air spaces that allow water to seep through it

a material that is able to be broken and re-attached

a material that is able to be created into a different substance

How is mechanical weathering different from chemical weathering?

Chemical weathering changes the chemical composition of rocks; mechanical weathering does not.

Chemical weathering happens over much shorter time frame than mechanical weathering.

Chemical weathering occurs only in tropical climates; mechanical weathering occurs only in cool climates.

Chemical weathering occurs only in the mountains; mechanical weathering occurs only on flat land.

Select the answer that shows the order of events a rock goes through.

weathering, erosion, deposition

erosion, weathering, deposition

erosion, deposition, weathering

Chemical and Mechanical

Authored by Charles Martinez

Science

6th Grade

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Acid rain breaking down rocks.

Mechanical Weathering

Chemical Weathering

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NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Animals moving rocks against each other and breaking them down.

Mechanical Weathering

Chemical Weathering

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Another mineral absorbing the water and turning it into a new substance.

Mechanical Weathering

Chemical Weathering

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NGSS.MS-ESS2-2

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Freshwater smoothing out rock in a river.

Mechanical Weathering

Chemical Weathering

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ice getting into cracks and breaking rocks.

Mechanical Weathering

Chemical Weathering

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Saltwater breaking down rocks.

Mechanical Weathering

Chemical Weathering

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Water with minerals present breaking down rocks.

Mechanical Weathering

Chemical Weathering

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NGSS.MS-ESS2-4

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Chemical and Mechanical

Acid rain breaking down rocks.

Animals moving rocks against each other and breaking them down.

Another mineral absorbing the water and turning it into a new substance.

Freshwater smoothing out rock in a river.

Ice getting into cracks and breaking rocks.

Saltwater breaking down rocks.

Water with minerals present breaking down rocks.

Wind breaking down rock over time.

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

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