Law of Conservation of Energy

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.HS-PS1-7

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Which energy transformation below matches?
A book falling?

• chemical to sound and heat
• kinetic to sound and heat
• electrical to sound and heat

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which energy transformation below matches?
Water moving over a dam to move a generator?

• kinetic to chemical
• kinetic to electrical
• solar to electrical

Tags

NGSS.MS-PS3-5

Which energy transformation below matches?
Green plants?

• chemical to mechanical
• chemical to heat
• solar to chemical

Tags

NGSS.MS-LS1-6

Which energy transformation below matches?
Animals eating food?

• electrical to potential
• chemical to kinetic
• potential to chemical

Tags

NGSS.MS-LS1-7

Which energy transformation below matches?
Burning coal or carbon-based fuel at a powerplant?

• chemical to heat to electrical
• mechanical to chemical to sound
• electrical to chemical to heat

Tags

NGSS.HS-PS1-4

Which energy transformation below matches?
An electrical circuit?

• chemical to heat, sound, light, mechanical
• solar to heat, sound, light, mechanical
• electrical to heat, sound, light, mechanical

Tags

NGSS.MS-PS3-5

Potential or kinetic?
Stretched bow and arrow?

• kinetic
• potential

Tags

NGSS.MS-PS3-2

Potential or kinetic?
Running?

• potential
• kinetic

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

• mechanical to heat

• sound to mechanical

• potential to kinetic

• kinetic to potential

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5