Topic 1

Question 1

Weather

Answer 1

Conditions of temperature, air pressure, cloud cover, precipitation, humidity, etc that occur at a particular time and place

Question 2

Climate

Answer 2

The average weather conditions of a region over a long period of time, usually at least 30 years

Question 3

Biosphere

Answer 3

The parts of earth that have the conditions suitable for supporting life, it is made up of 3 parts,
atmosphere: air
Lithosphere: earth
Hydrosphere: water

Question 4

What is the composition of the earth

Answer 4

78% nitrogen
21% oxygen

Question 5

Layers of the atmosphere

Answer 5

Troposphere( 0-10km)
Average temp 15C, nearly all life contained in this layer

Stratosphere(10-50km)
Temp increases as you go up, contains ozone gas, which absorbs uv light

Mesosphere
Temp decreases in this layer

Thermosphere
Gets extremely hot, auroa causes by earth magnetic field in this layer

Question 6

Magnetic field:

Answer 6

: force field that deflects charged particles emoted by the sun

Question 7

Lithosphere the solid part of the earth. Floats on a semi molten mantle layer, life is found at depths of several km

Question 8

Hydrosphere

Answer 8

All of the earths water that supports life, only 3% freshwater 97% saltwater