Energy & Simple Machines

Which has kinetic energy?

• a compressed spring
• a book on the bookshelf
• an avalanche
• a case of dynamite

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A simple machine that consists a rigid bar that pivots on a fixed point

• lever

• pulley

• wheel and axle

• fulcrum

Which of the following would not be classified as a lever?

• wheelbarrow
• baseball
• crowbar
• tweezers

Which of the following is not an example of work?

• an ice hockey puck laying on an ice rink
• ship movement that causes ripples in the water
• a man pushing a heavy box across the floor
• a magnet repelling a compass needle

Tags

NGSS.MS-PS3-5

A device in the shape of two inclined planes placed bottom to bottom is called a(n) ...

• incline
• wedge
• wheel and axle
• block and tackle

A seesaw is an example of a

• wedge

• lever

• inclined plane

• pulley

Tags

NGSS.MS-PS2-2

The unit for power is the ...

• watt
• joule
• newton
• dyne

An axe is an example of a

• pulley

• inclined plane

• screw

• wedge

What is energy?

• something that has mass

• a living thing

• a sammich

• the ability to do work

Tags

NGSS.MS-PS3-5

When force is used to move an object across a distance, this is called...

• effort

• power

• energy

• work

Tags

NGSS.MS-PS2-2