Forces, gravity, and simple machines

When something is moving or changing position, we call that ____.

• Gravity

• Motion

• Force

Tags

NGSS.MS-PS2-2

____ is a push or a pull. It can make an object slow down, speed up, or change direction.

• Gravity

• Motion

• Force

Tags

NGSS.3-PS2-1

When forces are unequal and cause a change in motion, we call them ____.

• Balanced Forces

• Unbalanced Forces

Tags

NGSS.3-PS2-1

The natural force that pulls objects down toward the center of the earth is called ____.

• Gravity

• Motion

• Force

Tags

NGSS.5-PS2-1

When forces are equal, therefore there is no change in motion and an object remains at rest, we call them ____.

• Balanced Forces

• Unbalanced Forces

What type of simple machine is a wheelchair ramp?

• a pulley

• a wheel and axle

• an inclined plane

What simple machine is a stiff bar supported by a fulcrum that can lift or move loads?

• a lever

• a screw

• a wedge

Which simple machines are paired together to make a pair of scissors?

• an inclined plane and a pulley

• a lever and a wedge

• a wedge and a pulley

What simple machine is an inclined plane wrapped around a rod; it can hold two things together?

• a lever

• a screw

• a wedge

What simple machine is a combination of a wheel rotating around a rod that moves objects?

• a screw

• a pulley

• a wheel and axle