Front

revolve

Back

to move in a circle around an object in the centre

Front

orbit

Back

the path taken when an object (such as a planet) moves around a larger object (such as the sun) in space.

Front

ellipse

Back

an oval shape

Front

slight ellipse

Back

not a perfect ellipse; describes the shape of the Earth’s orbit around the sun.

Front

year

Back

365¼ days; the length of a year on Earth.

Front

season

Back

spring, summer, autumn, or winter.

Front

tilt

Back

leaning at an angle; refers to the tilt of the Earth on its axis.

Front

hemisphere

Back

half of the globe; 'Hemi' means 'half'.

Front

North Pole

Back

the northernmost point on the globe, located at 90°N latitude.

Front

South Pole

Back

the southernmost point on the globe, located at 90°S latitude.