The equation for density.
What is Mass divided by Volume (M/V)?
The solar system formed from this cloud of gas and dust.
What is a nebula?
This small planet shared young Earth's orbit and led to the creation of the Moon.
What is Theia?
The shape of Earth's, and other celestial objects', orbits.
What is an ellipse?
Like a circle, but TWO points of focus, not one.
The phase of the Moon when the entire side is visible.
What is the full moon?
The denser planets.
What are the inner planets?
The inside of the planetary disk spins ______ than the ________.
What is the inside...faster...outside?
The degree of tilt Earth has on its axis, due to a collision.
What is 23.5 degrees?
Copernicus's model that placed the Sun at the center of our solar system.
What is the Heliocentric Model?

The position in which the Northern Hemisphere experiences summer?
What is C?
The force that makes a difference between mass and weight.
What is gravity?
Matter clumping together to form objects.
What is accretion?
Due to the Moon, Earth's rotation ____________.
What is "has slowed"?
The Earth is closest to the Sun at the ________.
What is the perihelion?
The number of low tides experienced anywhere on Earth per day.
What is two times?
If I fill a cup with 250 mL of gasoline, and the mass is 200 grams, what is its density?
What is 0.8g/mL?
The order of the planets in our solar system, from closest to the sun to furthest.
What is Mercury - Venus - Earth - Mars - Jupiter - Saturn - Uranus - Neptune?
The Moon is made up of matter from ____
What is early Earth and the former planet Theia?
The month in Earth's orbit in which it is closest to the sun.
What is January?
The cause of a Spring Tide.
What is the New Moon and Full Moon?
The combined gravity of the Sun and Moon.
The density of iron is 9.3 g/cm3, the volume of the sample is 10 cm3, what is the mass?
What is 93 g?
The number of moons among the inner planets.
What is 3 moons?
Mars has 2, Earth has 1.
The outer planets have about 202!
The number of, country of origin, and gender of the people who have walked on the Moon.
What is 12 American men?
The two days in the year in which the amount of daylight and darkness is equal.
What is the autumnal equinox (September 22nd) and vernal equinox (March 20th)?
The phase of the Moon when the majority is visible and growing each night.
What is waxing gibbous?