Energy Transformations

Front

Fuel

Back

chemical energy

Front

When energy enters a system and then comes out of the system later, the law of conservation of energy states that–

Back

the amount of energy coming out of the system must equal the energy that entered the system.

Front

What energy transformations occur when a lamp plugged into a wall socket heats up and glows?

Back

Electrical → thermal → light

Front

Energy of moving parts

Back

mechanical

Front

Microwave

Back

radiant energy

Front

What energy transformation occurs when an oven is powered on?

Back

Electrical -->Thermal

Front

Sound energy

Back

kinetic energy

Front

Which items would have this energy transformation: chemical → mechanical? Options: a candle burning, eating a big breakfast before a race, a ball bouncing, using a hairdryer.

Back

eating a big breakfast before a race

Front

How many forms of kinetic energy are there?

Back

5

Front

According to the law of conservation of energy, which equation is correct? Options:

E=mc2

,

KE = PE

,

Energy in = energy out

,

Energy in = power in

Back

Energy in = energy out