planets
the sun
the moon
miscellaneous
small solar system objects
100
This is the planet that is closest to the sun.
What is Mercury?
100
The sun is the center of this system.
What is the solar system?
100
The moon is a natural type of this that revolves around a bigger object.
What is a satellite?
100
This moon phase occurs when the moon is between the earth and sun so that the dark side of the moon faces earth.
What is the new moon phase?
100

Scientists classify small solar system object based on these.

What is sizes, shapes, compositions, and orbits.

200
This is the 3rd planet from the sun.
What is earth?
200
The sun is a type of this gas sphere that gives off light and heat.
What is a star?
200
These are hollow pits on the surface of the moon.
What are craters?
200
When the sun light shines on more and more of the moon, we say that the moon is doing this.
What is waxing?
200

The spherical region of comets that surrounds the solar system.

What is the Oort cloud?

300
This is what all the planets have in common?
What is "they revolve around the sun?"
300
It takes the earth 365 days to do this.
What is revolve (orbit) around the sun?
300
The moon's gravitational pull causes this rise and fall of the ocean.
What are tides?
300
It is during this time of day that shadows are smallest.
What is midday (or noon)?
300

Region of the solar system between Mars and Jupiter.

What is the asteroid belt?

400
These are the rocky planets.
What is Mercury, Venus, Earth, and Mars?
400
This is how long it takes earth to complete one rotation.
What is 24 hours --or one day?
400
These are the apparent shapes of the moon.
What are phases?
400
These two things cause the earth to experience seasons.
What is the tilt of the earth and its revolution around the sun?
400

This is the year that Pluto was reclassified as a dwarf planet.

What is 2006?

500
These are the gas giants.
What are Jupiter, Saturn, Uranus, and Neptune?
500
The sun is responsible for this first step of the water cycle.
What is evaporation?
500
These are higher and lower than normal tides.
What are spring tides?
500

The astronomical unit is this distance.

What is the distance between the Earth and the Sun? (150,000,000 kilometers)

500

This scientist gradually convinced others that the heliocentric model is correct.

Who is Galileo Galilei?

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