Grade 8 Science quiz

A force is described as...

• A push only

• A pull only

• A push or a pull

• None of the above

What unit do scientists use to measure force?

• Newton

• Grams

• Meters

• Meter per second per second

When you slide a bow across the floor what force must your push be stronger than?

• Support force

• Friction Force

• Gravity

• Air resistance

The moon has a smaller mass than the Earth. If you were able to travel to the moon your weight would...

• Increase

• Decrease

• Stay the same

• Vary with day and night

What is the net force on the box shown above?

• 10 N to the left

• 10 N to the right

• 60 N to the left

• 50 N to the right

_________ always pulls downward on objects

_______ and ______ are the forces acting when a book dropped and falls on the floor

___________ forces changes objects motion

The car stop and the person inside keep moving forward because of __________

Gravity affects projectile motion _________