PS.5.2.1 (5.P.1.1) #3: Schoolnet

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, such as the Earth and the Moon.

Front

What is inertia?

Back

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

Front

What happens to an object when friction increases?

Back

When friction increases, the object slows down or stops moving.

Front

Why does the Moon revolve around the Earth?

Back

The Moon revolves around the Earth because it is attracted by the Earth's gravity.

Front

What is the effect of a smooth surface on motion?

Back

A smooth surface reduces friction, allowing objects to move faster.

Front

What is the effect of a sticky surface on motion?

Back

A sticky surface increases friction, causing objects to move slower.

Front

What is the role of gravity in the solar system?

Back

Gravity keeps planets, including Earth, in orbit around the Sun.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help move objects up or down.

Front

How does mass affect the motion of an object?

Back

The mass of an object affects how much force is needed to move it; heavier objects require more force.