planets
the sun
the moon
miscellaneous
Gravity/AU
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

How does the moon shine

What is sunlight

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

What two factors does gravity depend on?

What is mass and distance

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

What do all objects do to each other through gravitational force?

What is attract

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

This is the distance in kilometers of one Astronomical Unit.

What is 150 million kilometers?

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 phases of the moon.

what is new, waxing, full waning

 

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 planet is about 1.52 AU from the Sun.

What is Mars?

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

The moon is a natural type of this that revolves around a bigger object.

What is a satellite?

500
Coal, oil, and natural gas are all types of this energy source.
What are fossil fuels?
500

This force opposes gravity and keeps planets from falling into the Sun.

What is inertia?

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