Law of Conservation of Energy

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 

• The PE and KE increase and decrease together
• The PE decreases while the KE increases 
• Impossible to know without knowing the mass  

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

What energy transformation occurs from a light bulb? 

• Electrical energy = kinetic energy + potential energy 
• Electrical energy = electrical energy 
• Electrical energy = chemical energy 
• Electrical energy = light energy + thermal energy 

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-4

The law of energy conservation says the total energy before the change _______ the total energy after it

• is less than
• is more than
• affects
• equals

Tags

NGSS.HS-PS3-4

Energy can be created.

• True
• False

Roller coasters slow down because their energy disappears.  

• True 
• False

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

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-PS3-5

NGSS.MS-PS3-1

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.HS-PS3-3

Which energy transformation below matches?
Green plants?

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

Tags

NGSS.HS-LS1-5

Which energy transformation below matches?
Animals eating food?

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

Tags

NGSS.MS-LS1-7