3.08 Causing Change

3.08

Causing Change

Forms of Energy

-Electrical

-Music

-Sound

-Light

-Energy of Motion

FUN FACT!

The pitch and loudness of your singing voice can make the glass vibrate to the point where it breaks.

Observe the Change

Energy such as heat, electrical, light, sound, and motion creates a change in an object. This change could affect the position or direction of an object, or it might mean a change in the temperature of the object.

Multiple Choice

The pitch and loudness of your singing voice can make the glass vibrate to the point where it breaks.

• True

• False

Example of Change

Sound energy is used when checking your pulse. The vibration of your heart creates sound, and a doctor listens for the patterns to measure your pulse.

Example of Change

Cooking creates a change in the temperature of the food. Electrical energy is transferred into heat energy that heats the pan with the food in it. 

Have you ever walked through a completely dark room? It's hard to do without bumping into things. To make walking around in the dark easier, you could grab a flashlight or turn on a lamp. Either option uses light to change your view of the room, and it isn't possible without energy. 

Multiple Choice

Energy has the ability to create change .

• True

• False

Cause a Change

Sound energy can create vibrations and energy of motion to break a glass.

Electrical energy produces light energy which allows drivers to see the road better.

Heat energy makes the sand very warm—maybe even too hot to stand on!

Heat energy causes the chocolate bar to melt.

Energy is Required

Energy is required to create motion, but you also need energy to cause a change. Whether you are talking about a change of state, like water freezing to make ice cubes, or a change in position, you need energy.