4.3 Flashcards
1
Q
What are greenhouse gases?
A
Gases that trap heat in the atmosphere
2
Q
What do green house gases do?
A
They help to hold heat in the atmosphere
3
Q
What is the greenhouse effect?
A
The way that heat is held in the atmosphere
4
Q
How have humans effected the greenhouse effect?
A
Deforestation, burning fossil fuels
5
Q
Why is the greenhouse effect important?
A
Because it helps heat the earth
6
Q
What can ice cores tell us?
A
What the weather and CO2 levels were like thousands of years ago
7
Q
What is positive feedback?
A
Amplifies the changes
8
Q
What is negative feedback?
A
Negates the change
9
Q
What is the difference between positive and negative feedback?
A
One makes the change less, and the other makes it more
10
Q
Examples of greenhouse gases:
A
CO2, methane
