Rivers & Glaciers review

What is the process that picks up and moves weathered rocks?

• deposition

• landslide

• weathering

• erosion

How are canyons formed?

• Wind blows sand into high piles, which form the canyon walls.

• Rivers erode soil and rock over time, leaving behind canyon walls.

• Gravity causes rocks to fall from mountain sides onto valley floors.

• Ice freezes and thaws in cracks of rocks, and the cracks become canyons.

Weathering causes rocks and minerals to break into smaller pieces.  Which event is the best example of weathering?

• a raindrop splashing in a lake
• a snowball rolling down a mountain
• a tree root growing into the crack of a rock

Tags

NGSS.MS-ESS2-2

The process by which water, ice, wind or gravity moves weathered rock and soil from one place to another.

• weathering
• erosion
• deposition
• dumptruck

Tags

NGSS.4-ESS2-1

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

• mechanical weathering
• chemical weathering
• erosion weathering
• deposition

Tags

NGSS.MS-ESS2-2

This type of weathering occurs when rocks weaken then break down due to chemical changes in the composition of the rock.

• mechanical weathering
• chemical weathering
• erosion weathering
• deposition

Tags

NGSS.MS-ESS2-2

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

• ice wedging
• chemical weathering
• acid rain
• abrasion

Tags

NGSS.MS-ESS2-2

How is mechanical weathering different from chemical weathering?

• Chemical weathering happens over much shorter time frame than mechanical weathering.
• Chemical weathering changes the chemical composition of rocks; mechanical weathering does not.
• 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.

Tags

NGSS.MS-ESS2-2

Weeds growing into the cracks in a sidewalk and the sidewalk begins to crumble is an example of:

• mechanical weathering

• chemical weathering

Potholes forming in the road after a cold winter is an example of:

• mechanical weathering

• chemical weathering