Active Earth - Plate Tectonics

The lithosphere

• Is the crust and the asthenosphere

• Is the asthenosphere

• Is the mantle

• Is the cortle

Oceanic crust is

• 5-10 km thick

• 35-70 km thick

Continental crust is

• 5-10 km thick

• 35-70 km thick

Which arrows show the direction of CONVERGENT or DESTRUCTIVE boundaries?

• → ←

• ← →

• ↑ ↓

Which arrows show the direction of DIVERGENT or CONSTRUCTIVE boundaries?

• → ←

• ← →

• ↑ ↓

Which arrows show the direction of TRANSFORM boundaries?

• → ←

• ← →

• ↑ ↓

What is the crust "floating on"?

• Asthenosphere

• Hydrosphere

• Biosphere

• Lithosphere

What was the supercontinent called that existed 200 million years ago?

• Pangea

• Alaska

• Gaia

• Osaka

What caused the split up of Pangea?

• Mantle plumes

• Earthquakes

• Volcanoes

• Solar flares

What is the source of the heat within the earth?

• The core

• The mantle

• The lithosphere

• The asthenosphere