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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
During this process, the moon moves through the Earth's shadow, and cannot be seen for a short time.
What is a "lunar eclipse"?
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
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 from the North Pole to the South Pole of the Earth.
What is the "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

Most of the moon's surface is

highlands

300
This object is used to study far away objects in the sky.
What is a "telescope"?
300
These dark, flat areas are hardened rock formed from huge lava flows that occurred billions of years ago.
maria
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
The moon affects this part of the Earth, changing it daily on our beaches.
What is the "ocean tide"?
400
The sun appears higher in the sky during this time of year because of the tilt of the earth.
What is "summer"?
400

These formed the craters on the moon's surface when they make impact.

meteoroids

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

Why does the surface of the moon experience such extreme weather changes between day and night?

Because the moon lacks an atmosphere to trap heat.

500
We have this special day every 4 years in February because it takes the Earth 365 and 1/4 days to revolve around the sun.
What is "Leap Year Day"?
500

Think back to the very beginning of the school year. This part of the sun that is seen around the edge of the moon during a solar eclipse.

What is the "corona"?