Vocabulary
The solar system is a ______________ bound system consisting of a sun and the objects that orbit it.
a. district
b. gravitationally
c. hexagonally
b. gravitationally
What does our solar system consist of?
The star, the sun, and everything bound to it by gravity.
Eight planets orbit the Sun and are held in place due to ____________.
Gravity
What are the four planets that are closest to the Sun called?
Terrestrial planets
What objects are smaller than a planet, but larger than meteoroids?
Asteroids
A planet is an astronomical body that orbits a ______.
a. Star
b. Moon
c. Planet
a. Star
How many planets are in our solar system?
Eight
What is the attractive force by which a planet or other body draws objects toward its center?
Gravity
The four larger planets in the outer part of the solar system are called ______ ________.
Gas giants.
How many moons are in our solar system?
200 moons
An attractive force between two masses is called what?
a. Orbit
b. Asteroids
c. Gravity
c. Gravity
Smaller planets found in our solar system are called ______ planets.
Dwarf
Anything that has ______ also has gravity.
Mass
What kind of core do gas giants have?
a small rocky core
Which planet has a giant moon that is bigger than Mercury?
Saturn
A habitable zone is called a habitable zone because it can possibly support what?
a. Life
b. Ozones
c. Donuts
a. Life
What are held in orbit around planets by gravity?
Moons
What do moons most often orbit?
Planets
In what year was Pluto reclassified as a dwarf planet?
2006
The moon's gravitational pull causes what?
Ocean Tides
A huge collection of gas, dust, and billions of stars and their solar systems held together by gravity is called?
a. Universe
b. Solar System
c. Galaxy
c. Galaxy
Millions of pieces of _____ and ___ orbit the Sun.
a. planets and moons
b. rocks and ice
c. asteroids and meteoroids
b. rocks and ice
True or False: The smaller an object's mass, the larger its gravitational force is on another object.
Put the 4 gas giants in order from closest to the Sun to farthest from the Sun.
Jupiter, Saturn, Uranus, Neptune
False; our solar system is one of many solar systems in the Milky Way Galaxy.