Physical Science, Chapter 12, Force and Motion, Flashcard

Front

What force keeps the Earth in orbit around the Sun?

Back

Gravity is the force that keeps the Earth and other planets in orbit around the Sun.

Front

What is the force that attracts two masses to each other?

Back

Gravity is the force that attracts two masses towards each other.

Front

In a vacuum, which will land first: a ping pong ball, a bowling ball, or a feather?

Back

In a vacuum, all will land at the same time regardless of their mass.

Front

What causes gravity?

Back

Gravity is caused by mass and the distance between objects.

Front

How do we know there is gravity in space?

Back

We know there is gravity in space because planets orbit the Sun due to gravitational attraction.

Front

What is the definition of gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

What is the relationship between mass and gravity?

Back

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

Front

What happens to gravity as the distance between two objects increases?

Back

As the distance between two objects increases, the gravitational force between them decreases.

Front

What is air resistance?

Back

Air resistance is a force that opposes the motion of an object through the air.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.