Planets & Gravity

________ is a natural force of attraction exerted by one object on another object.

• The atmosphere

• Gravity

• Orbit

• Revolution

This planet is known as the "Red Planet."

• Saturn

• Venus

• Mars

• Earth

_______ is the smallest of the Galilean Moons.

• Ganymede

• Io

• Callisto

• Europa

A _______ is a celestial body moving in an elliptical orbit around a star.

• planet

• revolution

• moon

• rotation

______ is the 2nd closest planet to the Sun.

• Mercury

• Jupiter

• Saturn

• Venus

A(n) ______ is a period of time it takes a planet to go around the sun.

• revolution

• orbit

• force of gravity

• rotation

Some characteristics of _____ planets are: larger, made up mostly of gas, and far apart.

• inner

• atmospheric

• gravitational

• outer

Planet ______ is made of 2/3 water.

• Saturn

• Earth

• Jupiter

• Uranus

A(n)_____ is a bowl-shaped cavity on the surface of the planet.

• Celestial Body

• crater

• Asteroid Belt

• Oort Cloud

How does the mass on an object affect gravity?

• the greater the gravitational force, the less mass is affected

• the lesser the mass, the greater the force

• the greater the mass of an object, the more gravitational force is exerted on other objects around it