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GR 7 NST - Coggle Diagram
GR 7 NST
TOPIC 1 - Relationship of the sun to the earth
1. Solar Energy and the earths seasons
The sun radiates heat and light
The earth receives energy from the sun
The earth spins on its axis once per day
The earths axis is an imaginary line
The earths axis is tilted
The tilt of the earths axis does not change as the earth orbits around the sun
The intensity of the suns enery
four seasons
Summer in the Southern Hemisphere
Winter in the Southern Hemisphere
The length of the day
2. Solar Energy and Life on earth
Plants absorb light from the sun and produce food
All plants and animals depend on this process
The suns energy sustains all life on earth
3. Stored Solar Energy
Coalm Oil and gas
How the fossil fuels formed
Coal, Oil and gas store the suns energy
Humans are using up this store of energy
TOPIC 2 - relationship of the moon to the earth
Relative positions
Gravity
Tides
TOPIC 3 - The Historical development of astronomy
Early indigenous knowledge
Modern Developments