The amount of space an object takes up.
What is Volume?
Mars has a gravitational acceleration constant of 3.7 m/s2. Neptune has a gravitational acceleration constant of 11.15 m/s2. Saturn has a gravitational acceleration constant of 10.44 m/s2. On which of the following planets would an object weigh the most?
What is Neptune?
The larger the planet, the ____________ the gravitational force acting on objects that orbit it and reside on it.
What is stronger (etc.)?
This person was the first to suggest geocentrism (Earth-centered system).
Who is Aristotle?
These are the four inner planets.
What is Mercury, Venus, Earth & Mars?
How much matter, or "stuff," is in an object.
What is Mass?
A 92 kg box is sitting in a warehouse on Earth. What is the weight of the object due to Earth’s gravity?
What is 901.6 N?
As distance decreases between two objects, the force of gravity ____________________.
What is Increases?
This individual built off Aristotle's model and explained retrograde motion via epicycles.
Who is Ptolemy?
This is the color of the hottest stars in our universe.
What is blue (or blue-white)?
The universal force of attraction between all things that have mass.
What is Gravity?
The gravitational acceleration rate on Mars is 3.7 m/s2. What is the weight in Newtons of a 56 kg rock on Mars?
What is 207.2 N?
These are two key factors that determine gravity of a celestial body.
What is any combination of
(1) Mass
(2) Distance
(3) Radius
(4) Density?
This person observed Venus orbited the sun, and not Earth, and that Saturn had four moons.
Who is Galileo?
These are the four outer planets in order of closest to furthest from the sun.
What is Jupiter, Saturn, Uranus, Neptune?
Mass per volume.
What is Density?
In the distant future Jupiter's surface cools and solidifies. An 80 kg astronaut from Earth visits Jupiter, where the gravitational acceleration is 11.55 N/kg. How much will this astronaut weigh on Jupiter?
What is 924 N?
Our of these three inner planets Mercury, Earth, & Mars, this is the one with the greatest gravitational force.
What is Mother Earth baby!
Primarily rejected at the time, this was the first person to suggest Heliocentrism (Sun-centered system).
Who is Copernicus?
This is a giant cloud of spaced dust and gas, proposed to be what condenses into a star.
Hint: this is also the name of a Guardians of the Galaxy character.
What is a Nebula?

In Physical Sciences, such as Earth & Space Science, this can refer to the gravitational force pulling downward on an object by a celestial body.
What is Weight?
An object on Earth weighs 90 N. What is the mass of said object?
DOUBLE JEOPARDY: This question is worth 1,000 points. Hint: the answer is related to gravity.
This is the primary reason that Pluto is no longer considered a planet.
What is Pluto does not clear its neighborhood with its own orbit?
This scientist developed his three laws in order to explain how planets move in their orbits.
Who is Johannes Kepler?
This is one of the two main parts of a black hole. (You can say either one).