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earth and moon 2


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the big holes you see on the moon
occurs when one object passes through the shadow of another object
the dark, flat areas you see on the moon. they are actually areas of hardened lava
1. movement of earth around the sun
2. takes one year to complete
phases of the moon
new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, waning crescent
landforms you see on the moon
1. craters
2. mares (dark, flat surface)
3. highlands (mountains)
4. volcanic domes
5. rilles
lunar eclipse
1. full moon passes through earth's shadow
2. the earth passes between sun and moon
3. can last more than 2 hours
4. looks red because earth bends the light
the closed path earth takes as it revolves around the sun
a shape that is not quite circular
an imaginary line that passes through the earth's center and its north and south poles
1. earth spins on its axis
2. gives us our day and night
how the moon and the earth are
the same
1. rocky
2. dense
3. both have craters
4. both have some of the same elements--calcium, aluminum, silicon, etc.
really cool fact
since the moon has no wind or rain, footprints will remain on its surface for millions of years
what does the earth revolve around
the revolves around the sun
what does the moon revolve around
the moon revolves around the earth
any artificial object that orbits another object.
ex: sputnik
an instrument that magnifies, or makes things far away in space seem larger
space probe
a robot vehicle that is used to explore deep space
ex: voyager 1 and voyager 2
why does the same side of the moon always face earth
because the moon rotates the earth in 27.3 days, which is exactly the same amount of time it takes to rotate one time on its axis
solar eclipse
1. earth passes through a NEW MOON'S shadow
2. the moon completely covers the sun
3. lasts no more than 7.5 minutes
the layer of gases that surround earth
layers of the atmosphere
troposphere, stratosphere, mesosphere, thermosphere, ionosphere, exosphere
why does the moon appear to get smaller (wane) or get bigger (wax) during the month
because the moon's position in the sky changes
why do we have eclipses
because the earth, sun, and moon line up
why don't we have eclipses all the time
because the moon's shadow usually passes above or below earth, or above or below earth's shadow

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