Biological Weathering

What is biological weathering?

• Weathering caused by wind

• Weathering caused by living things

• Weathering caused by water

• Weathering caused by temperature changes.

Which of the following is an example of biological weathering?

• A) Tree roots breaking rocks

• B) Water freezing in cracks

• C) Sunlight heating rocks

• D) Wind eroding sand

Fill in the blank: Lichens release chemicals that break down the ______ in rocks.

• A) minerals

• B) water

• C) air

• D) roots

Piddocks bore into rocks using their ______.

• teeth

• claws

• sharp shell

• tentacles

What type of weathering involves rainwater?

• Biological

• Chemical

• Physical

• None of the above

Which organism is sometimes confused with moss and contributes to biological weathering?

• Algae

• Lichens

• Fungi

• Bacteria

Fill in the blank: Biological weathering can be caused by ______.

• A) plants and animals

• B) water and wind

• C) sunlight and heat

• D) ice and snow

Tags

NGSS.MS-LS2-4

What do tree roots do as they grow that contributes to biological weathering?

• Absorb sunlight

• Release chemicals

• Grow into cracks

• Produce heat

Fill in the blank: Piddocks use their sharp shell to ______ the rock surface.

• grind away

• polish

• paint

• cover

Which of the following is NOT a cause of biological weathering?

• Tree roots

• Lichens

• Piddocks

• Rainwater