The force that causes objects with mass to attract one another.
gravity
orbital path
system
outer planet
2. Multiple Choice
1 minute
1 pt
Objects such as planets, moons, and stars that are located in the sky or in space.
solar systems
comas
asteroid belts
celestial objects
3. Multiple Choice
1 minute
1 pt
The gravitationally-curved path of an object around a point in space.
solar system
coma
terrestrial
orbital path
4. Multiple Choice
1 minute
1 pt
The luminous celestial body around which Earth and other planets revolve and from which they receive heat and light.
star
planet
moon
sun
5. Multiple Choice
1 minute
1 pt
A ball of gas in space that produces its own light and heat.
planet
meteorite
star
asteroid belt
6. Multiple Choice
1 minute
1 pt
Any of the large celestial bodies that revolve around the Sun in the solar system
solar systems
planets
asteroids
meteorites
7. Multiple Choice
1 minute
1 pt
Any of the rocky, terrestrial planets of Mercury, Venus, Earth, and Mars, whose orbits are inside the asteroid belt.
outer planets
inner planets
Galilean moons
asteroids
8. Multiple Choice
1 minute
1 pt
Any of the planets Jupiter, Saturn, Uranus, and Neptune, whose orbits lie beyond the asteroid belt.
inner planets
outer planets
solar systems
Galilean moons
9. Multiple Choice
1 minute
1 pt
The sun together with the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it.
inner planets
outer planets
solar system
Galilean moons
10. Multiple Choice
2 minutes
1 pt
A group of interacting or interdependent parts forming a complex whole; for example, all the factors or variables in an environment or all the planetary bodies revolving around a star.
system
coma
asteroid
terrestrial
11. Multiple Choice
1 minute
1 pt
The region between the inner and outer planets where most asteroids orbit around the sun.
meteorites
meteroid
asteroid belt
comet
12. Multiple Choice
1 minute
1 pt
True or False: Terrestrial means Earth like.
true
false
13. Multiple Choice
1 minute
1 pt
A natural chunk of rock or dust existing outside of Earth's atmosphere.
meteroid
meteor
asteroid
none of the above
14. Multiple Choice
1 minute
1 pt
A small object that enters Earth's atmosphere from space and burns due to friction, emitting light.
satellite
comet
coma
meteor
15. Multiple Choice
1 minute
1 pt
Remains of meteoroids that strike the surface of Earth or the Moon.
comet
asteroids
meteorites
systems
16. Multiple Choice
1 minute
1 pt
Something that orbits around another object; for example, a moon orbiting a planet or a human-made object orbiting Earth.
comet
moon
coma
satellite
17. Multiple Choice
1 minute
1 pt
The four largest and brightest moons of Jupiter, which were discovered by Galileo Galilean: Ganymede, IO, Calisto, and Europa.
solar system
asteroids
Comas
Galilean Moons
18. Multiple Choice
1 minute
1 pt
A celestial body that revolves around a planet.
moon
asteroid
meteoroid
terrestrial
19. Multiple Choice
1 minute
1 pt
A celestial body of ice, dust, and rock with an elongated and elliptical orbit.
coma
planet
comet
satellite
20. Multiple Choice
2 minutes
1 pt
Glowing, heated dust and vaporized gas that surrounds the icy comet nucleus as it travels near the sun; solar winds cause heated gases to stream out of the nucleus, forming a tail which points away from the Sun.
comet
coma
meteorite
meteoroid
21. Multiple Choice
1 minute
1 pt
Large and small rocks or metallic masses orbiting the Sun; made up of materials similar to those that formed the planets.
meteors
asteroids
meteorites
terrestrials
22. Multiple Choice
1 minute
1 pt
Which celestial body is the center of our solar system, around which every object orbits?
the sun
asteroid belt
Jupiter
Earth
23. Multiple Choice
1 minute
1 pt
Galilean moons orbit which planet?
Earth
Uranus
Jupiter
Neptune
24. Multiple Choice
1 minute
1 pt
Which of the following planets could be described as rocky, terrestrial and relatively close to the sun?
Neptune
Jupiter
Mars
Saturn
25. Multiple Choice
1 minute
1 pt
Based on the table provided, which object is a comet?
A
B
C
D
26. Multiple Choice
1 minute
1 pt
All inner planets share which of the following characteristics?