Earth's History

Who is the person credited with developing the theory of continental drift?

• Harry Hess
• Galileo
• Alfred Wegener
• Newton

The supercontinent in the continental drift hypothesis was called ____.

• Panthalasa

• Pangaea

• Mesosaurus

• Africa

What hypothesis states that the continents were once joined to form a single supercontinent?

• plate tectonics

• seafloor spreading

• continental drift

What is this a picture of?

• plate tectonics
• continental drift
• pangea
• glacier scaring

This is a picture of glacier scars found in Africa.  What are these evidence for?

• Africa has always been near the equator
• Africa was once in an area of the Earth that had a very cold climate
• The continents have not moved
• sea floor spreading

What is the area where two tectonic plates meet called?

• collision

• mid-ocean ridge

• a boundary

• a rift zone

What type of boundary is formed when plates collide?

• convergent
• horizontal
• divergent
• transform

What type of boundary is formed when plates separate?

• convergent
• horizontal
• divergent
• transform

What type of boundary is formed when plates slide past each other?

• convergent
• horizontal
• divergent
• transform

Why did no one believe Wegener's theory?

• He could not explain HOW the continents moved

• He didn't have evidence

• His data was wrong

• He didn't use the right technology to gather data