Science 5 Reviewer

What is the formula for speed?

• Speed = Distance × Time

• Speed = Time ÷ Distance

• Speed = Distance ÷ Time

• Speed = Time × Distance

A car travels 300 km in 5 hours. What is its speed?

• 50 km/h

• 60 km/h

• 80 km/h

• 100 km/h

What is the difference between speed and velocity?

• Speed includes direction, but velocity does not.

• Speed is measured in m/s, but velocity is not.

• Velocity includes direction, but speed does not.

• There is no difference.

If an object is not changing its position over time, it is:

• In motion

• At rest

• Accelerating

• Slowing down

Which of the following is an example of velocity?

• 30 km/h

• 20 m/s east

• 10 m/s

• 50 km

Which of the following is a conductor of electricity?

• Rubber

• Plastic

• Copper

• Glass

What is the purpose of an insulator?

• To stop electricity from flowing

• To increase heat transfer

• To allow electricity to flow easily

• To make circuits work faster

Which of the following materials is an insulator?

• Aluminum

• Copper

• Wood

• Silver

Why are electrical wires covered with plastic?

• To help electricity flow

• To protect people from electric shock

• To make them look colorful

• To increase electricity

Heat moves quickly through a metal spoon because of:

• Conduction

• Insulation

• Magnetism

• Radiation