C9 : The early atmosphere Flashcards
1
Q
Atmosphere
A
A layer of gas surrounding the Earth
2
Q
When do scientists believe the Earth was formed
A
4.6 billion years ago
3
Q
What created Earth
A
Giant rocks colliding with each other, These collisions generated huge amounts of heat and for it’s first billion years, the Earth was very hot
4
Q
The early atmosphere
A
The Earth would’ve had thousands of volcanoes which would release mostly carbon dioxide, water vapor and nitrogen creating the Earth’s first atmosphere
5
Q
What evidence do scientists use when looking at early formations of the Earth
A
.Collecting gas samples from ancient rocks/ice in the arctic
.Gathering data from the atmosphere from other planets and moons
