Energy and Conservation of Energy

Sugar (glucose) is the fuel that provides us with energy. It has ______ energy.

• mechanical

• electrical

• chemical

• heat

Tags

NGSS.MS-PS3-5

Energy that is stored in a compressed or stretched object is called _____.

• kinetic energy

• potential energy

• gravitational potential energy

• elastic potential energy

As the temperature of a substance falls, the particles in the substance ________ energy and they ___________.

• gain; speed up

• lose; slow down

• lose; speed up

• gain; slow down

Tags

NGSS.MS-PS1-4

Which is NOT a vector?

• energy

• work

• mass

• All of the answer choices

If a flying bird has 800 J of potential energy and 400 J of kinetic energy, the bird has ____ of mechanical energy.

• 400 J

• 1200 J

• 2 J

• 200 J

Tags

NGSS.MS-PS3-4

During photosynthesis, plants change ______ energy into ______ energy.

• heat; chemical

• kinetic; electrical

• chemical; potential

• light; chemical

Tags

NGSS.MS-LS1-6

If there is no friction in a system, then the amount of mechanical energy ______.

• stays the same

• gradually increases

• gradually decreases

• can increase or decrease

Tags

NGSS.MS-PS3-5

Energy that is due to the motion of an object is called _____.

• kinetic energy

• potential energy

• gravitational potential energy

• elastic potential energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

How does the kinetic energy of an object change if the object’s speed quadruples but its mass remains the same?

• The kinetic energy decreases to one-fourth of its original value.

• The kinetic energy doubles.

• The kinetic energy increases by a factor of 16.

• The kinetic energy quadruples.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A roller coaster car on a very long track eventually will come to stop as all of its mechanical energy is changed into _______ through friction.

• heat and sound

• kinetic energy

• elastic potential

• gravitational potential energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5