Work and Energy

What is the proper unit for gravitational potential energy?

• meters

• gravitons

• newtons

• joules

Tags

NGSS.MS-PS3-2

Increasing the speed of an object ____ its potential energy.

• Decreases

• increases

• changes

• does not affect

Tags

NGSS.MS-PS3-2

The amount by which a machine multiplies an effort force is called the ____.

• resistance force

• mechanical advantage

• fulcrum

• efficiency factor

Tags

NGSS.MS-ETS1-1

____ energy is stored energy due to position.

• Kinetic

• Potential

• Magnetic

• Chemical

Tags

NGSS.MS-PS3-2

Work is the transfer of ____ that occurs when a force makes an object move.

• time

• space

• energy

• density

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NGSS.MS-PS2-2

NGSS.MS-PS3-5

The kinetic energy of an object increases as its ____ increases.

• volume

• height above Earth

• potential energy

• speed

Tags

NGSS.MS-PS3-1

Machines make tasks easier by changing either the magnitude or the direction of the _____ needed.

• force

• energy

• work

• velocity

The SI unit for energy is the ____.

• meter per second

• joule

• kilogram

• calorie

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Three of these simple machines are similar to one another. Choose the one that does not belong with this group.

• wheel and axle

• pulley

• lever

• wedge

According to the law of conservation of energy, the total amount of energy in the universe ____.

• remains constant

• decreases

• increases

• changes constantly

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5