1. Rotation and Revolution Power point By: Ruby Yeary 2. Revolution is the Earths yearlong elliptical orbit around the Sun.This takes 365 days. This is what causes seasons. 3. Rotation is the spinning of Earth on its imaginary axis, whichtakes about 24 hours to complete and this is what causesnight and day. 4. Axis Axis is the imaginary vertical line that cutsthrough the center of the Earth and aroundwhich Earth spins. The axis is 23.5degrees. 5. Orbit the shape of earths orbit iscalled an ellipse. 6. ConclusionAnswer these questions to make sure youlearned something.What degree is Earth tilted at? What shape is itsorbit? How many days does revolution take?How many hours does rotation take? 7. =) This slide show is brought to you by EPIC GIR