Motion and Measurement Quiz

What is the average speed of a boat that travels 57 kilometers in 3 hours?

• 171 km/h

• 60 km/h

• 54 km/h

• 19 km/h

Acceleration always involves a change in

• speed.

• velocity.

• direction.

• all of the above

Motion is defined as a change in __________.

• a. speed

• b. position

• c. time

• d. direction

The __________ of a distance-time graph represents speed.

• slope

• height

• width

• area

Why does engine oil help prevent an engine from overheating?

• It causes chemical reactions that absorb energy.

• It reduces friction between moving parts.

• It has a higher melting point than metal.

• It makes the engine run more slowly.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

You would weigh less on the moon than on Earth because

• you would have less mass on the moon.

• the moon has weaker gravity than Earth.

• the moon has a thinner atmosphere than Earth.

• two of the above

Tags

NGSS.MS-PS2-4

Examples of objects that make use of elastic force include

• hair scrunchies

• pogo sticks

• trampolines

• all of the above

Which statement is true about forces acting in the same direction?

• They are added to yield the net force.

• They are subtracted to yield the net force.

• They cancel each other out.

• They have no effect on the net force.

Tags

NGSS.MS-PS2-2

When you stretch a spring, it resists the change in shape. True or False?

• True

• False

Rubber is an example of what type of material?

• Elastic

• Plastic

• Brittle

• Rigid