Law of Conservation of Energy

A drawn bow possesses mechanical energy in the form of _______________. After the arrow is released, the energy is transformed into _________________.

• potential energy; mechanical energy

• elastic potential energy; kinetic energy

• gravitational potential energy; kinetic energy

• elastic kinetic energy; mechanical kinetic energy

Tags

NGSS.MS-PS3-5

In the figure, potential energy is being converted into kinetic energy from

• point A to point B

• point B to point C

• The only energy involved here is kinetic.

• Energy is not being converted.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

A ball is projected into the air. Where is potential energy the greatest?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-2

Within the alarm clock seen here, energy is transformed. It is time to get up! The alarm clock goes off. What are the energy transformations taking place in your alarm clock?

• electrical to magnetic to sound

• electrical to mechanical to sound

• electrical to mechanical to light

• chemical to electrical to mechanical

What form of energy does a compressed spring have?

• heat energy

• kinetic energy

• chemical energy

• potential energy

Tags

NGSS.MS-PS3-2

A pole vaulter runs forward, plants his pole, rises in the air and lands. What point represents his greatest amount of gravitational potential energy?

• when he initially lands

• as he runs forward to plant the pole

• just before he starts to fall to the ground

• after take-off as the pole expands and lifts the vaulter toward the bar

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

• The total amount of energy is conserved

• The total amount of energy is less after a reaction

• The total amount of energy is more after a reaction

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 

• Energy cannot be created or destroyed, it can only transformed

• Energy can't be created, destroyed or transformed

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-4

Energy cannot be destroyed.

• True 

• False

Tags

NGSS.MS-PS3-5

Energy can be created.

• True

• False