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Sun, Earth, and Moon
Earth’s Rotation Vocabulary
Sun Earth’s medium size star center of the solar system made of hydrogen and helium gases creates energy from nuclear fusion has an atmosphere
Earth 3rd planet from the sun Rocky “terrestrial planet” Has an atmosphere Sustains life
Moon A natural satellite for a planet Earth has one moon Visible by reflected light from the sun No atmosphere A lot of craters
Crater Bowl shaped indentions on the surface of a
planet, moon, or asteroid caused by a collision with another object
Satellite A body or object that revolves around a larger
body in space
Rotation = Ro “day” tion The spinning of the Earth on its axis 24 hours (1 day) Spins counter clockwise CAUSES Day and Night and the Sun to Appear to
Move across the Sky
Axis An imaginary line that passes through Earth’s
center at its North and South poles Axis is at a tilt
Day How long it takes the Earth to rotate; 24 hours
Shadow Shade cast upon a surface by something blocking
light, we see this due to Earth’s rotation. Morning and evening – shadows are the longest Noon – shadows are the shortest
Night The period between dusk and dawn. Facing away from the sun
Revolution To travel in a closed path around an object such
as the Earth does around the sun, (1 year, 365 days) Moon revolving around the Earth, (1 month)
orbit The path one object takes as it revolves around
another object in space
CompassDevice to determine directionN, S, E, W