Vocabulary
Misc
Moon
Phases and Eclipses
Exploring Earth's Moon
100
the term used to describe the spinning of Earth on its axis
What is rotation?
100
These are caused by earth's tilt and revolution
What are seasons?
100
This is 27.3 days long
What is the length of the moon's revolution?
100
The number of phases of the moon
What is eight?
100
This was the first US spacecraft to successfully land on the moon (not crash land)
What is _Surveyor_?
200
this is the imaginary line around which earth spins
What is the earth's axis?
200
This is caused by Earth's rotation.
What is day and night?
200
Depressions on the moon's surface
What are impact craters (craters)?
200
during these phases, the illuminate portion of the moon grows larger
what is waxing?
200
This craft helped measure the moon's crust and took photos to map the moon's surface
what is _Clementine_?
300
Occurs when the Sun is directly above the Earth's equator.
What is an equinox?
300
This is caused by the earth's rotation and the movement of magma in the earth's core.
What is magnetic field?
300
These are the different forms the moon takes in its appearance from Earth
What are phases (of the moon)?
300
This eclipse can only occur during a full moon
what is a lunar eclipse
300
This is the importance of ice on the moon
What is a source of water for astronauts or moon colonists
400
Earth's yearly orbit around the sun.
What is revolution?
400
This axis does not align with earth's rotational axis.
What is magnetic axis?
400
The theory that the moon formed from Earth material thrown off when a large object collided with earth
What is the impact theory?
400
this occurs when the moon moves directly between earth and the sun, shadowing part of earth
what is a solar eclipse
400
This is what _Ranger_ and _Lunar Orbiter_ took of the moon
What is photographs?
500
When the Sun reaches its greatest distance north or south of the equator.
What is the solstice?
500
These are caused by earth's tilt and revolution.
What are seasons?
500
These are flat, dark regions within craters on the moon
What are maria?
500
under this darkest part of the shadow, a total solar eclipse occurs
what is umbra
500
This is predicted by data from moon quakes
What is a solid, iron-rich core?
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