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1) How old is planet Earth?
2) True or false: we know exactly when the first organisms appeared.
3) When are plate tectonics thought to have begun?
4) What are the two great evolutionary growth spurts?
5) When was the first mass extinction?
6) What was the name of the supercontinent 300 million years ago?
7) When did the first apes appear?
Answers below!
ANSWERS!
1) 4.5 billion years
2) False - nobody knows!
3) 3 billion years ago
4) The Cambrian Explosion and the Great Ordovician Biodiversity Event.
5) The Ordovician-Silurian
6) Pangaea
7) 25 million years ago
How much do you know about the history of the Earth?
Here is an excellent article from BBC Earth looking the 25 most important events in our planet's history.
Read the article and then answer the following questions:
1) How old is planet Earth?
2) True or false: we know exactly when the first organisms appeared.
3) When are plate tectonics thought to have begun?
4) What are the two great evolutionary growth spurts?
5) When was the first mass extinction?
6) What was the name of the supercontinent 300 million years ago?
7) When did the first apes appear?
Answers below!
ANSWERS!
1) 4.5 billion years
2) False - nobody knows!
3) 3 billion years ago
4) The Cambrian Explosion and the Great Ordovician Biodiversity Event.
5) The Ordovician-Silurian
6) Pangaea
7) 25 million years ago
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