Changing Climate Flashcards
1
Q
How do we know that climate change has changed?
A
Fossils of animals and plants
Evidence of glaciation
Evidence from rocks
Evidence from ice cores of CO2 levels
2
Q
Explain how volcanoes affect climate change
A
Dust and gases produced by volcanoes block out or absorb incoming solar radiation
3
Q
Explain the sunspot theory
A
When fewer sunspots were observed the Earth was cooler
4
Q
How can changes in the Earth’s orbit affect climate change?
A
Because the Earth’s orbit changes it could affect the amount of solar energy received at the Earth’s surface
5
Q
How long did the little ice age last?
A
1300-1870
6
Q
What group of animals became extinct during the little ice age?
A
Megafauna
