More cards in this set

Card 6

Front

What was the effects of algae and plants on the early atmosphere

Back

Preview of the front of card 6

Card 7

Front

What are tectonic plates?

Back

Preview of the front of card 7

Card 8

Front

Why do tectonic plates move?

Back

Preview of the front of card 8

Card 9

Front

About how much do tectonic plates move in a year?

Back

Preview of the front of card 9

Card 10

Front

What happens at plate boundaries?

Back

Preview of the front of card 10

Card 11

Front

Why have the amounts of gases in the atmosphere been almost the same for the last 200 million years?

Back

Preview of the front of card 11

Card 12

Front

What has been the main cause of a change in the amount of gases in recent years?

Back

Preview of the front of card 12

Card 13

Front

Why were Wegener's ideas not accepted until the 1960's?

Back

Preview of the front of card 13

Card 14

Front

Why are there so many theories about how life began?

Back

Preview of the front of card 14

Card 15

Front

Outline the Miller and Urey experiment

Back

Preview of the front of card 15
View more cards