Force
Friction
Simple Machines
Balanced or Unbalanced?
Random

100

What is a force? 

a push or pull

100

What is friction?

The rubbing of objects that are moving.

100

What kind of simple machine is a ramp?

An inclined plane.

100

Two dogs fighting over a toy using the same force

Balanced

100

How many simple machines are there?

6

200

What kind of force is gravity?

A pull

200

Low or high friction?: Slippery shorts on a slide

Low friction

200

What kind of simple machine is a flag pole?

A pulley

200

A moving vehicle

Unbalanced

200

What is the fixed point on a lever called?

The fulcrum

300

When you push or pull an object, you are applying a _______ force to it.

contact

300

Low or high friction?: Hiking boots on the rocky soil

High

300

What kind of simple machine is a broom?

Lever

300

A person skydiving.

Unbalanced

300

What kind of simple machine is a knife?

a wedge

400

The ______ force is zero when forces are balanced.

Net

400

Low or high friction?: Ice skates on ice

Low

400

What kind of simple machine is a doorknob?

Wheel and axle

400

A parked car

Balanced

400

Why do the bottoms of your shoes have bumps?

For friction!

500

Low or high friction?: A snail going up a tree

High

500

What kind of simple machine is a bottle cap?

Screw

500

An elephant and small dog playing tug of war

Unbalanced