Sun and earth
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What is the ‘axis’ of the earth?
Imaginary line through the centre of the earth from the north to the south pole.
What is the surface temperature of the sun?
About 6000 degrees celcius
What is the name of the energy coming from the sun?
solar energy
What forms does solar energy take?
Heat and light
What angle is the earth tilted by on its axis?
23,5 degrees
How long does it take the earth to rotate once on its axis?
1 day
What is the name of the fixed path an object travels in through space?
Orbit
How long does it take the earth to revolve around the sun?
1 year - 365 1/4 days
Why do we have different seasons during the year?
At different times of the year, different hemispheres tilt toward and away from the sun.
Does the angle of inclination of the earth change as it orbits the sun?
No it remains constant at 23,5 degrees
What 3 things are required for photosynthesis?
Carbon dioxide, light energy and water
How is sedimentary rock formed?
Layers of sand and mud are compressed over millions of years.
Why are fossil fuels non-renewable?
Humans are using them much faster than they are being created again.