What is the primary difference between mechanical and chemical weathering?

Weathering Processes and Their Impact on Rocks

Interactive Video
•
Science, Biology, Chemistry
•
6th - 7th Grade
•
Hard

Patricia Brown
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mechanical weathering changes the chemical composition of rocks.
Chemical weathering does not involve any chemical reactions.
Chemical weathering breaks rocks into smaller pieces without changing their composition.
Mechanical weathering breaks rocks into smaller pieces without changing their composition.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which agent is responsible for ice wedging in rocks?
Plants
Wind
Water
Gravity
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do water, wind, and gravity contribute to mechanical weathering?
By growing roots that break rocks apart.
By freezing and expanding in rock cracks.
By causing chemical reactions in rocks.
By picking up and rubbing rocks against each other.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role do plant roots play in mechanical weathering?
They chemically alter the rock composition.
They expand and widen cracks in rocks.
They dissolve rocks with acidic secretions.
They protect rocks from weathering.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is oxidation in the context of chemical weathering?
The breakdown of rocks by plant roots.
The freezing and thawing of water in rock cracks.
The reaction of rock minerals with oxygen to form rust.
The process of rocks being dissolved by water.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How did the Statue of Liberty change color over time?
It was painted green.
It underwent a chemical reaction with oxygen.
It was covered in moss.
It was cleaned with acid.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is acid precipitation and how does it affect rocks?
It is rain that freezes and expands in rock cracks.
It is acidic water that dissolves certain types of rocks.
It is water that chemically reacts with rock minerals.
It is water that physically erodes rocks.
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