National Geographic Weathering Article

What is weathering?

• The growth of plants

• The movement of water

• The building of mountains

• The breaking down of rocks

Which of these is an agent of weathering?

• Sunlight

• Plastic

• Water

• Electricity

What happens when water freezes in rock cracks?

• It melts the rock

• It turns the rock into sand

• It makes the rock grow

• It expands and breaks the rock

What is acid rain?

• Rain that has chemicals like sulfur dioxide and nitrogen oxide in it

• Rain that is very hot

• Rain that is very cold

• Rain that is very clean

What is a bornhardt?

• A tall, domed rock

• A type of soil

• A type of plant

• A kind of animal