Earth
Sun
Moon
This and That
Vocabulary
100

This causes the Earth's seasons.

What is the tilt and revolution of the Earth?

100
The word "solar" refers to this object.
What is the "sun"?
100
It takes this long for the moon to revolve completely around the Earth.
What is 29 days or about a month?
100

This is the first day of spring or fall.

What is an equinox?

100
This word describes the Earth spinning continuously.
What is "rotating"?
200
The shape of the Earth
What is a "sphere"?
200
The sun is a big fiery ball of gas called this.
What is a "star"?
200
Solar refers to the sun. This term refers to the moon.
What is "lunar"?
200
It takes this long for the Earth to complete on full rotation.
What is 24 hours?
200

This imaginary line goes through the North Pole to the South Pole of the Earth.

What is the 'rotation axis"?

300
The Earth takes this long to revolve around the sun.
What is 365 1/4 days?
300
The sun rises in this direction.
What is the "east"?
300
During this phase of the moon, we can see no light from the moon.
What is a "new moon"?
300

The Earth rotates in this direction.

What is west to east, or counterclockwise?

300
This term is used to describe the phase of the moon when we see all of the lit side.
What is "full moon"?
400
When it is winter in North America, it is this in Australia.
What is "summer"?
400
This occurs when the moon moves between the sun and the Earth, blocking some the the sun's light.
What is a "solar eclipse"?
400
During this process, the moon moves through the Earth's shadow, and cannot be seen for a short time.
What is a "lunar eclipse"?
400
The sun appears higher in the sky during this time of year because of the tilt of the earth.
What is "summer"?
400
This is the dark part of the shadow during an eclipse. 

What is umbra?

500
The imaginary line horizontally around the middle of the Earth.
What is the "equator"?
500
This is how the sun's rays strike the Earth in the summer.
What is "directly"?
500

This is the order of the 4 main moon phases.

What is New, 1st quarter, Full, Last/3rd quarter

500

This describes the amount of daylight hours on the hemisphere that is tilted toward the sun on the solstice.

What is longer days?

500

This is why only a few people can see a total solar eclipse. 

What is the Moon's shadow on the Earth is very small?

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