What is the name of the invisible rod that goes through the middle of the planet ?
axis
100
The earth revolves around the sun. What does the moon revolve around?
earth
100
When a planet travels around the sun, it ______________
revolves
100
Name two things Earth and Mars have in common
revolve around the sun
rotate on their axis
200
The largest planet in the solar system is.....
Jupiter
200
How long does it take for the earth to rotate one full rotation on its axis?
24 hours
200
The moon is not a star. How do we see it shining in the sky?
The moon reflects the light of the sun
200
Planets with a large orbit have a
a) shorter year compared to earth
b) longer year compared to earth
longer year compared to earth
200
Which planet is known as earth's "twin"
venus
300
The smallest planet in the solar system is......
Mercury
300
When a planet rotates one full time around on its axis, it is called
a day
300
What does it mean when there is a new moon?
The sun is shining on the other side of the moon and we can not see the moon.
300
The time it takes a planet to revolve around the Sun one time is called
a year
300
The balance between gravity and centrifugal force causes planets to
stay in their orbits
400
Mercury, Venus, Earth and Mars are all what kind of planets?
solid (or rocky) planets
400
When North America is facing the sun, what time of day is it in Australia?
night
400
What is the name of this phase of the moon?
Waxing Quarter (or first quarter)
400
Why is Neptune's year longer than Earth's year?
Neptune is further away from the sun and it takes longer to revolve around the sun.
400
Put solar system, universe and galaxy in order from largest to smallest.
universe, galaxy, solar system
500
Jupiter, Saturn, Uranus, and Neptune are all.....
gaseous planets
500
What causes day/night?
The earth rotates on its axis one full time in 24 hours. When part of the earth is facing the sun, that part is having day. The part of the earth away from the sun is having night.
500
If on November 1, there is a full moon, when will the next full moon most likely be?
November 30
500
What causes the seasons?
Revolution around the sun causes the seasons. The part of the earth that is tilted toward the sun has summer because it gets more direct sunlight.
500
Eight planets, satellites, sun and asteroids are all part of the _____________?