The Date And Key Events In The Universe Flashcards
(9 cards)
1
Q
What event is considered the beginning of the universe?
A
The Big Bang.
2
Q
Approximately how many years ago did the Big Bang occur?
A
About 13.8 billion years ago.
3
Q
What is the name of our galaxy?
A
The Milky Way.
4
Q
What is the age of the solar system?
A
About 4.6 billion years old.
5
Q
What major event occurred about 65 million years ago that led to the extinction of the dinosaurs?
A
A massive asteroid impact.
6
Q
What is the term for the process by which species adapt over time through natural selection?
A
Evolution.
7
Q
Which era is known as the Age of Mammals?
A
The Cenozoic Era.
8
Q
What is the name of the theory that explains the origin of species?
A
Darwin’s theory of evolution by natural selection.
9
Q
What does the term ‘extinction’ refer to?
A
The dying out of a species.
