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問題一覧
1
What is the age of the Earth
4.567 billion years old
2
What planet human can live
Earth
3
What is the mass of earth
5.98 × 10²⁴ kilograms
4
What is the surface area
510,072,000 square km
5
Shape of the earth
Oblate Spheriod
6
Rotation of the earth
Every 24 equivalent to 1 day
7
Revolution
1 year approximately 365 ¼ days
8
Layers of the earth
Inner core, Outer core, Mantle, Upper mantle, Crust
9
4 major interacting components
Atmosphere Biosphere Hydrosphere Geosphere
10
Air
Atmosphere
11
4 unique layer of atmosphere
Troposphere Mesosphere Stratosphere Thermosphere
12
How many nitrogen there in atmosphere
About 78%
13
How many oxygen there in atmosphere
About 21%
14
How many kilometer/miles there in atmosphere
560 kilometer (348 miles)
15
living things
Biosphere
16
Water
Hydrosphere
17
Example of hydrosphere
Lakes Streams Rivers Crecks
18
How many fresh water in hydrosphere
30%
19
How many frozen water in hydrosphere
70%
20
Solid earth that includes the continent and ocean crust
Geosphere
21
How many earth composed in geosphere
94%
22
Earth composed in geosphere
Oxygen Silicon Magnesium
23
Earth
3 closet planet to the sun
24
Largest
Terrestrial planet