Gravity and Orbits Review

Front

What is gravity?

Back

Gravity is the attractive force between all objects with mass in the universe.

Front

True or False: Any object with mass has gravity.

Back

True

Front

Which planet has the shortest orbital period?

Back

Mercury.

Front

Who formulated the laws of gravity in the 1600s?

Back

Isaac Newton.

Front

What is the path a planet follows as it moves around the sun called?

Back

Orbit/Revolution.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of an object around its own axis, while revolution is the movement of an object around another object.

Front

What is weight?

Back

Weight is the force exerted by gravity on an object, dependent on its mass and the gravitational pull of the planet.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the relationship between mass and gravity?

Back

The greater the mass of an object, the stronger its gravitational pull.

Front

What is an orbital period?

Back

The time it takes for a planet to complete one full orbit around the sun.