A place where two plates move toward each other or collide
What is a convergent boundary?
100
Earthquakes occur
What happens during a transform boundary?
100
The continents used to be joined together and they slowly drifted apart
What is the idea of continental drift?
100
200 million years ago
How long ago did Pangaea begin to break apart?
200
A divergent boundary
What type of boundary caused Africa and South America to separate from each other?
200
Towards each other ( → ← )
How do the plates move?
200
A transform boundary
What type of boundary causes the earthquakes in California?
200
During the 1920’s
When did Wegener come up with the idea of continental drift?
200
The name that Wegener gave to the supercontinent that existed 230 million years ago
What is Pangaea?
300
Divergent
What type of boundary can cause an ocean to form or get bigger?
300
Oceanic and continential
What are the two types of convergent boundaries?
300
a place where two plates slide past each other
What is a transform boundary?
300
It showed that Antarctica must have been closer to the equator in the past. This in the only way that Antarctica could have been warm enough for plants to grow there.
How did the discovery of plant fossils in Antarctica provide evidence for the idea of continental drift?
300
Alfred Wegener
Who came up with the idea of Pangaea?
400
Earthquakes occur, volcanoes or volcanic islands form, valleys form, and new crust forms
What happens during a divergent boundary?
400
Earthquakes, Volcanoes, Volcanic Islands, and Mountains are formed
What can continental boundaries cause?
400
→
←
In what direction do transform plates move?
400
Because South Africa used to be closer to the South Pole, where it is colder.
Why are there glacier marks in warm places, like South Africa?
400
All the continents conjoined
What is Pangaea made up of?
500
A place where two plates spread apart or move away from each other
What is a divergent boundary?
500
Earthquakes, Volcanic Islands, Volcanoes, and Plates get destroyed
What do Oceanic boundaries cause?
500
No, they wont appear
Do transform boundaries cause mountains to appear?
500
1- continents fit together like puzzle pieces
2- glossopteris fossils were found in Antarctica
3- coal was found in cold places
4- glacier marks found in warm places
5- Mesosaurus fossils found in Africa and South America
What are 5 pieces of evidence that support the idea of continental drift?
500
The same fossils of tiny animals that could not swim were found on the other side of the world.