What is weathering?

• The breaking down of rocks by wind only

• The movement of rocks from one place to another

• The breaking down of rocks by natural processes

• The heating of rocks by the sun

Which of the following is a type of physical (mechanical) weathering?

• Acid rain dissolving limestone

• Plant roots breaking rocks apart

• Rocks breaking due to temperature changes

• Iron in rocks reacting with water

Chemical weathering occurs when:

• Rocks are broken by animals walking on them

• Water, oxygen or acids cause rocks to break down

• Wind wears away rocks

• Rocks fall from a cliff

Biological weathering is caused by:

• Rain

• Earthquakes

• Plants and animals

• Wind

What is the Earth's outermost layer called?

• Mantle

• Core

• Crust

• Lithosphere

Tectonic plates float on which layer of the Earth?

• Inner core

• Ocean

• Mantle

• Crust

What happens at a divergent plate boundary?

• Plates move toward each other

• Plates slide past each other

• Plates move away from each other

• Plates stay still

What is likely to occur at a convergent plate boundary?

• Mountain formation or subduction

• Creation of new ocean floor

• No geological activity

• Gentle wind patterns

Which of the following is an example of a tectonic plate?

• The Arctic Circle

• The Australian Plate

• The Equator

• The Mariana Trench

Which event is most directly caused by tectonic plate movement?

• Tornadoes

• Earthquakes

• Flooding

• Hurricanes