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7 Earth and Space

TermDefinition
axis the line that the earth rotates on that goes through the north and south poles
one day 24 hours
equator the imaginary line in between the north and south pole
hemisphere either north or south of the equator
orbit the motion of one object around another because of gravity
seasons in the southern hemisphere summer, autumn, winter, spring
summer when a hemisphere is tilted towards the Sun
winter when a hemisphere is tilted away from the Sun
one year 365.25 days
spring and autumn when the suns rays shine mostly on the equator
equinox when there is equal day and night and the sun shines directly on the equator
summer solstice most daylight hours
winter solstice least daylight hours
new moon We can't see the moon because the side facing Earth is not illuminated by the sun
waxing crescent A small crescent of light is visible, getting larger
first quarter Exactly half of the moon is illuminated
waxing gibbous More than half of the moon is illuminated and growing larger
full moon The entire face of the moon is illuminated
waning gibbous More than half of the moon is illuminated but getting smaller
third quarter Exactly half of the moon is illuminated, the opposite side from the First Quarter
waning crescent  A small crescent of light is visible, getting smaller
tides the rise and fall of sea levels caused by the gravitational pull of the Moon and the Sun on Earth’s oceans
high tide when the ocean is pulled towards the Moon
low tide happens in areas where water is pulled away
Created by: justineforrest
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