Physical Science 9B L1.2 Describing Motion

Direction is the length of the route between two points.

• True

• False

Answer explanation

Distance is the length of the route between two points.

You could measure distances with a balance.

• True

• False

Answer explanation

A balance used to measure mass of substances like salt and sugar.

Words that describe direction include east, up, and left.

• True

• False

Three blocks north is an example of displacement.

• True

• False

If two vectors are equal size are moving in opposite directions, the resultant vector is twice the size.

• True

• False

Imagine that you are riding in a car. Which frame of reference could you use to determine how fast the car is moving relative to the ground? 

• The people sitting in the back seat.

• A sign on the side of the road.

• The driver of the car.

• Car traveling next to your car.

What SI unit best suited for measuring the length of a room in your classroom?

• kilometer

• centimeter

• meter

• millimeter

Match the following:

• distance

• something that is not moving with respect to an observer that can be used to detect motion

• position

• Location

• direction

• quantity that includes both size and direction

• vector

• line along which something moves

• frame of reference

• length of the route between two points

SI unit for distance

• kilometer

• meter

You walk 3 blocks East to the store, then 1 block West to meet your friend for coffee.  What is your distance and displacement?