Components of the Earth Flashcards
1
Q
How does the Earth gain energy?
A
From the sun
2
Q
How does the Earth gain mass?
A
Through the impact of meteorites
3
Q
How does the Earth lose mass?
A
Through escape of gases out to space
4
Q
List the four spheres of the Earth
A
Atmosphere
Geosphere
Hydrosphere
Biosphere
5
Q
Name each of the 6 layers of the atmosphere
A
Troposphere Stratosphere Mesosphere Thermosphere Ionosphere Exosphere
6
Q
In which layer of the atmosphere is the ozone layer situated?
A
The stratosphere
7
Q
What are the progressive layers of the Earth
A
- Inner core
- Outer core
- Mantle
- Crust
8
Q
What are the two types of crust Earth consists of?
A
Continental and oceanic crust
9
Q
How thick is the continental crust?
A
25 - 50 km
10
Q
The rock cycle involves which sphere?
A
The geosphere
