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Earth
Sun
Moon
This and That
Vocabulary
100

This causes the Earth's seasons.

What is the tilt 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 keeps the Earth and moon in their orbits.
What is "gravity"?
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

This mission was launched by the Soviet

What is "the Luna 2?"

200
It takes this long for the Earth to complete on full rotation.
What is 24 hours?
200

This imaginary line separates the hemispheres

What is the "equator"?

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
This object is used to study far away objects in the sky.
What is a "telescope"?
400

When it is winter in North America, it is this in South America. 

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

This is another name for the moon

What is a "Luna"?

400
The sun appears higher in the sky during this time of year because of the tilt of the earth.
What is "summer"?
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 mission placed a man on the moon.

What is the "Apollo 11"?