In Science, we talk about relative motion. Identify a synonym for "relative."

• opposite

• comparative

• identical

When observing relative motion, we compare the motion of one object to another. Sam is standing at the bus stop and watches a car drive by. Relative to Sam, which describes the motion of the car?

• The car is not moving.

• The car is moving.

• The car is moving at the same speed at Sam.

How fast is the Earth rotating?

• At different speeds between 10 and 30 kilometers per second.

• The Earth does not rotate, it only revolves.

• At a constant speed of 30 kilometers per second.

The Earth is rotating at a _____________ speed of about 30 kilometers per second.

• constant

• varying

• inconsistent

Which statement is true about the Earth?

• The Earth moves around the Sun, but it does not rotate.

• The Earth does not move at all, that is why we do not feel like we are moving when we lay down.

• The Earth rotates at a very fast and constant speed of 30 kilometers per second.

Tags

NGSS.MS-ESS1-1

When you are riding on a bus, what is your relative motion compared to the trees you pass?

• You are not moving relative to the trees because you are sitting on the bus.

• You are moving because you are getting further away from the trees after you pass them.

• You are not moving because you are passing each tree as you ride by.

What is relative motion?

• When an object is moving very fast

• When an object's motion is non-existent

• When we compare the motion of one object to another

When you sit in a chair on Earth, _____________.

• you are moving relative to the Earth

• you are moving relative to the chair

• you are moving relative to the Sun since the Earth you are sitting on is constantly in motion

When comparing the motion of one object to another, we are comparing the __________ of the objects.

• relative motion

• force of gravity

• potential energy

What is it called when scientists compare one object's motion to another?

• relative motion

• friction

• gravity