ES 03.1 Weathering

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

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

• frozen water acts as a solute
• water expands when it freezes
• the mass of water increases when it freezes
• frozen water dissolves most types of rock

Tags

NGSS.HS-ESS2-5

Rust that forms on rocks or metal because of extended exposure to oxygen is what example of chemical weathering?

• carbon dioxide (carbonic acid)
• acid rain
• oxidation
• lichens

Tags

NGSS.MS-ESS2-2

NGSS.MS-PS1-2

What is the relationship between surface area and the rate of weathering?

• As surface area increases, the rate of weathering decreases
• As surface area increases, the rate of weathering increases
• As surface area decreases, the rate of weathering increases
• There is no relationship

How might a weathered mountain appear different than an unweathered mountain?

• Weathered mountain would be taller.
• Weathered mountain would be rounder and less jagged.
• Weathered mountain would be more jagged and less rounded.
• Weathered mountain would have no trees.

Tags

NGSS.MS-ESS2-2

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

• Water - It can carry acid and dissolve rock
• Erosion - Moves the rocks from one place to another
• Wind - It displaces rocks
• Exfoliation - New cracks give chemical reactions the chance to operate

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

What determines how fast a rock weathers?

• The age of the rock.

• The oxygen present in the rock.

• The minerals that makeup the rock.

Tags

NGSS.MS-ESS2-4

How do plants weather rocks?

• during photosynthesis
• when roots grow into cracks of rocks and expand the rock
• when the plant moves water from the roots to the leaves

Tags

NGSS.MS-ESS2-2

What does it mean when a rock's surface area increases?

• There are more surfaces available to be weathered on the rock
• There are less surfaces available to be weathered on the rock
• The rock has weathered completely
• Surface area has nothing to do with rocks

Tags

NGSS.MS-ESS2-2