Conservation and Dissipation of energy

Changes in energy stores in a torch lamp

• Chemical energy store in the battery

• Sound energy

• Electrical energy

• Light and thermal energy

When an object falls from certain height

• Potential energy increases

• Kinetic energy decreases

• Potential energy decreases

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

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-PS3-4

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.HS-PS3-3

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

• A
• B
• C
• D

Tags

NGSS.MS-PS3-2

What type of energy is in this picture?

• Kinetic
• Potential
• Chemical
• Sound

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

On a roller coaster, where is maximum potential energy?

• At the bottom of a big hill
• When going around a corner
• When going upside down
• At the top of a big hill

Tags

NGSS.MS-PS3-2

What force ultimately slows the roller coaster to a stop?

• Applied
• Normal
• Friction
• Magnetic

Tags

NGSS.MS-PS2-2

The formula for work is:

• d = r x t
• p = m x v
• f = m x a
• w = d x f