Weathering and Soil

What is the difference between chemical and mechanical weathering?

• Chemical weathering is a physical change of the rock and mechanical weathering is a chemical change in the rock.

• Mechanical weathering is the breaking down of rock and chemical weathering is splitting the rock

• Mechanical weathering is a physical change in the rock and chemical weathering is a change in the chemical makeup of the rock

Why would a rock with a high amount of iron turn reddish- brown?

• It is chemically weathered through acid rain

• It is Mechanically weathered through animal actions

• It is chemically weathered through by oxygen through the process of oxidation

Which of the following best describes the relationship between weathering and erosion?

• Erosion is the breaking down of rock and weathering moves the rock

• weathering is the process of breaking down the rock and erosion moves the broken down pieces

• erosion breaks down rock and weathering drops the rock off in a new location

Smaller rocks hitting other rocks in a river is an example of what type of weathering?

• Abrasion by water

• Abrasion by wind

• Abrasion by gravity

• Chemical by acid rain

An impermeable rock

• has small holes that allows water to pass through

• is made of harder minerals that do not allow water to pass through

• is permanent

A permeable rock

• has small holes that allows water to pass through

• Is made of harder minerals that does not allow water to pass through

• is not permanent

Tags

NGSS.MS-ESS2-4

Which rock would weather faster?

• Permeable

• Impermeable

Tags

NGSS.MS-ESS2-4

This statue is most likely weathered by...

• Oxidation making it rusty

• acid rain (acid precipitation)

• abrasion by wind

• acids from living things

Which of the following is an example of chemical weathering?

• Wind picking up sand and blowing it against stone (abrasion by wind)

• Water getting into a crack and freezing (Ice Wedging)

• Water in puddles dissolving rock on Stone Mountain

• A gopher breaking rocks in soil (Animal Action)

Which of the following places would have a higher rate of weathering?

• An area with high winds, lots of rain, hot summers and freezing winters

• An area with low winds and a mild steady climate

• An area with high heat, little rain, and high winds

• weathering always happens at the same rate

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1