_______ 1. Friction is a force.

_______ 2. Rubbing or touching two surfaces produce friction.

_______ 3. Friction is important in our daily lives.

_______ 4. Rough surfaces have less friction.

_______ 5. Friction is much present on rocky or rough road.

_______ 8. It is easier to pull an object with more friction.

_______ 10. Due to friction, a moving object slows down.

8. Which shows that more friction is useful? 

If you run down the sidewalk and stop quickly, you can stop because of the _____________ between your shoes and the cement.

Which is an invisible force that pulls objects towards each other? 

What causes a parachute to fall slowly?

What force pulls a guava down to the floor? 

Why do you move faster when running down a hill? It is because ____________.

Which statement is true about gravity?

Which surface does a toy car run on the fastest?