WG3B DOL

What was the name of the super-continent that Alfred Wegener proposed existed 250 million years ago?

• Gondwana

• Laurasia

• Pangea

• Atlantis

What happens to magma when it cools off?

• A. It becomes less dense and rises

• B. It becomes more dense and sinks

• C. It evaporates

• D. It solidifies immediately

What natural feature is growing taller every year due to the collision of continental plates?

• A. The Andes Mountains

• B. The Rocky Mountains

• C. The Himalayan Mountains

• D. The Alps

What is created when a continental plate collides with an oceanic plate?

• A) A mountain range

• B) A subduction zone

• C) A transform boundary

• D) A mid-ocean ridge

What is the process called when the gap between Africa and South America widens?

• A) Subduction

• B) Sea floor spreading

• C) Transform boundary

• D) Plate collision

Describe what would result if two continental plates collide.

• Formation of a mountain range

• Creation of a new ocean

• Formation of a volcanic island

• Development of a deep-sea trench

What type of boundary involves plates moving away from one another?

• Convergent

• Transform

• Divergent

• Subduction

According to Wegener’s theory, how was Earth different 250 million years ago?

• The continents were in the same positions as today.

• The continents were connected in a larger land mass known as Pangea.

• The continents were smaller and scattered.

• The continents were underwater.

What is the difference between the lithosphere and asthenosphere?

• The lithosphere is the outer, solid layer of Earth, and the asthenosphere is a liquid layer of the mantle.

• The lithosphere is a liquid layer, and the asthenosphere is solid.

• The lithosphere is part of the atmosphere, and the asthenosphere is part of the ocean.

• The lithosphere is made of water, and the asthenosphere is made of rock.

What type of boundary involves plates sliding past each other?

• Convergent

• Transform

• Divergent

• Subduction