Weathering

Flashcard
•
Science
•
8th Grade
•
Hard
+2
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is physical weathering?
Back
Physical weathering is the process of breaking down rocks and minerals into smaller pieces without changing their chemical composition. An example is the freezing and thawing of water in rock cracks.
Tags
NGSS.MS-ESS2-2
2.
FLASHCARD QUESTION
Front
What is chemical weathering?
Back
Chemical weathering involves the chemical alteration of minerals in rocks, leading to their breakdown. This can occur through processes like acid rain or the action of lichens.
Tags
NGSS.MS-PS1-2
3.
FLASHCARD QUESTION
Front
What is ice wedging?
Back
Ice wedging is a type of physical weathering where water seeps into cracks in rocks, freezes, expands, and causes the rock to break apart.
Tags
NGSS.MS-ESS2-2
4.
FLASHCARD QUESTION
Front
How do plant roots contribute to weathering?
Back
Plant roots can cause both physical and chemical weathering. Physically, they can grow into cracks and break rocks apart. Chemically, they can release acids that alter the minerals in the rocks.
Tags
NGSS.MS-ESS2-2
5.
FLASHCARD QUESTION
Front
What role does acid rain play in weathering?
Back
Acid rain causes chemical weathering by reacting with minerals in rocks, leading to their dissolution and breakdown.
Tags
NGSS.MS-ESS2-2
6.
FLASHCARD QUESTION
Front
What are lichens and how do they affect rocks?
Back
Lichens are small green plants that grow on rocks and release enzymes and acids that chemically weather the rock, breaking it down over time.
Tags
NGSS.MS-ESS2-2
7.
FLASHCARD QUESTION
Front
What is the difference between physical and chemical weathering?
Back
Physical weathering breaks rocks into smaller pieces without changing their composition, while chemical weathering alters the minerals in the rocks through chemical reactions.
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