Weathering of the Earth's Surface - Richards Earth Science

Weathering of the Earth's Surface - Richards

S6E5. d. Ask questions to identify types of weathering ...

Weathering of the Earth's Surface - Richards

S6E5. d. Ask questions to identify types of weathering ...

Multiple Choice

Both weathering and erosion can break down rocks at or near the surface of the Earth. What is the difference?

• Weathering breaks down the rocks and sediments where they are, erosion moves the rocks and sediments.

• Erosion breaks down the rocks and sediments where they are, weathering moves the rocks and sediments.

• Weathering involves elements of weather - like wind and water. Erosion does not involve these elements of weather.

Multiple Select

The types of weathering include (choose all that apply)

• physical

• genetic

• astronomical

• chemical

Multiple Choice

True or False:

In weathering, a similarity between rocks and water is that they expand when they get warmer, and contract when they get colder

• True

• False

Multiple Choice

Exfoliation of rocks occurs when

• There is more pressure on the rock

• There is less pressure on the rock

Multiple Choice

In this picture, the rocks were weathered by the wind. Which statement would best explain the shape of the rock?

• The wind was weaker near the surface of the Earth.

• The top layer of the formation was made of a harder rock material than the bottom layer.

• This formation must have been carved by some ancient civilization.

Multiple Choice

Water and gravity can cause both mechanical weathering and erosion. What makes the difference?

• In mechanical weathering, the rocks are broken down in the place that they are.

• In mechanical weathering, the rocks are broken down as they travel long distances across the Earth's surface.

Fill in the Blanks

The type of mechanical weathering that breaks down rocks as they grind and scrape against each other is called

Multiple Choice

How do animals cause the most mechanical weathering?

• They chew on rocks and spit them out in smaller pieces

• The dig holes and tunnels underground and push rocks up to the surface

• They scratch rocks with their fingernails and cause abrasion

Multiple Choice

Which statement best describes the difference between mechanical and chemical weathering?

(Hint: humans are responsible for some of the acid precipitation that falls to Earth!)

• Mechanical weathering can be caused by plants and animals, but chemical weathering is never caused by plants or animals

• Mechanical weathering is caused when rock is broken by the force of another substance or thing, chemical weathering changes the chemical structure of the rock

• Chemical weathering can be caused by plants and animals, but mechanical weathering is never caused by plants or animals

Multiple Select

Check all of the agents of chemical weathering

• Water

• Wind

• Gravity

• Acids

• Air

Poll

Which do you think causes the most weathering on the Earth?

• Water

• Wind

• Gravity

• Animals