Weathering

What is the weathering process in which rocks are broken down into smaller pieces (sediments) and do not change the rock composition?

• chemical weathering

• mechanical weathering

• acid rain

• oxidation

The surfaces of old concrete statues are often covered with small holes or pits. Which of these MOST LIKELY causes these holes or pits?

• The concrete becomes pitted as water freezes in small cracks in the statue.

• The concrete is chemically weathered by acid rain.

• The concrete is chipped away by sand particles blown by strong winds

• Long exposure to sunlight causes the pits to form.

Tags

NGSS.MS-ESS2-2

Which type of climate would cause the greatest rate of weathering?

• Cold and dry

• Warm and humid (wet)

• Cold and humid (wet)

• Warm and dry

Tags

NGSS.MS-ESS2-4

Bobby observed that a metal trash can was covered with rust. What type of weathering caused the rust on the trash can?

• Mechanical weathering

• Chemical weathering

• Wind weathering

• Erosion weathering

Tags

NGSS.MS-PS1-5

What is likely to cause cracks on the sidewalk?

• ice wedging

• tree roots or plant roots growing bigger

• oxidation

• exfoliation

Tags

NGSS.MS-ESS2-2

A student hiking in a rock area on a mountain notices that wide, deep cracks have formed in some of the large rocks. Some of the cracks are so large that the rocks have broken apart. Which process most likely caused these rocks to crack and creak?

• weathering by wind

• weathering by fast-moving water

• water freezing and thawing

• sediments being deposited.

Which of the following is the most important agent of chemical weathering to form this cave?

• water - It can carry acid and dissolve rock

• wind - It displaces rocks

• exfoliation - New cracks give chemical reactions the chance to operate

• Erosion - Moves the rocks from one place to another

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

When Joe saw the Rocky Mountains for the first time, he exclaimed, "These mountains are much younger than ours back East!" Which feature supports his conclusion that the Rockies were relatively young mountains?

• Their sedimentary layers are still exposed

• They have rounded tops

• They have sharp peaks

• Weathering has not yet hardened the rock

Tags

NGSS.MS-ESS1-4

This type of weathering occurs when rock is physically broken down into smaller pieces of rock.

• mechanical weathering

• chemical weathering

• erosion

• deposition

These rocks were made smooth by wind blowing smaller rock particles across their surface. This is an example of:

• ice wedging

• acid rain

• abrasion

• oxidation