Unit 2 Science Review

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other. The strength of gravity depends on the mass of the objects and the distance between them.

Front

Which has a stronger pull of gravity: two bowling balls or two beach balls?

Back

Two bowling balls have a stronger pull of gravity because they are denser and have more mass.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its speed or direction.

Front

What happens when balanced forces act on an object?

Back

When balanced forces act on an object, it may remain at rest or continue moving at a constant speed.

Front

What type of motion is described as 'shifting back and forth'?

Back

Shifting back and forth describes oscillatory motion, like a swing or a pendulum.

Front

How can you make a swing go faster without applying more force?

Back

You can make the swing go faster by making the chain of the swing shorter.

Front

What is the path of the International Space Station classified as?

Back

The path of the International Space Station is classified as cyclical motion because it orbits Earth in a circular path.

Front

What is the difference between speed and velocity?

Back

Speed is how fast an object is moving, while velocity includes both speed and direction.

Front

What is inertia?

Back

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

Front

What is the effect of mass on gravitational pull?

Back

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