Earth and Sun
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
Eruptions that take place on the surface of the sun are called...
Prominences and Solar Flares
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.
 24 hours
200
A group of stars that forms a pattern. There are 88 of them...
Constellations
300
The Earth takes this long to revolve around the sun.
365 and 1/4 days
300
The innermost layer that gives off the light energy we see is called...
Photosphere
300
During this phase of the moon, we can see no light from the moon.
What is a "new moon"?
300
A frozen mass of different types of ice and dust orbiting around the Sun... 
Comet
300
It forms when a meteoroid hits earth's atmosphere...
Meteor
400
....... are darker and cooler areas on the sun's surface. 
Sunspots
400
This occurs when the moon moves between the sun and the Earth, blocking some the the sun's light.
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
As we see less and less of the lit part of the moon, we say that it is doing this.
What is "waning"?
500
The imaginary line horizontally around the middle of the Earth.
The "equator"
500
These are the 3 main layers of the Sun...
Photosphere, cromosphere, corona
500
The moon affects this part of the Earth, changing it daily on our beaches.
What is the "ocean tide"?
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
This is a very important star in navigation because it indicates which direction is North...
Polaris
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