Lesson: Friction and Surfaces Science
In this lesson, we will learn how to describe the effect the materials of the two surfaces in contact have on the friction and movement of an object.
Sophia pulls a smooth plastic box along a smooth surface using a spring balance.
If she pulls the same box along a rough surface, what will happen to the reading on the balance?
How smooth a material is affects the amount of friction. Look at the three road surfaces below.
A car is driven over each of them.
Which of the road surfaces will cause the lowest amount of friction?
Here is a spring balance.
Fill in the blank: A spring balance is an instrument used to measure .