Lesson 99 - Energy 3-17

Question 1

What is energy?

Answer 1

the ability to do work or cause change

Question 2

what is sound energy?

Answer 2

energy we can hear

Question 3

What causes sound to happen

Answer 3

when something vibrates

Question 4

How is sound described?

Answer 4

sound can be loud or soft. It is called volume.

Question 5

How is pitch described?

Answer 5

Pitch can be high or low. Example - low pitch - tuba; high pitch - bird’s chirp

Question 6

what is light energy?

Answer 6

energy we can see

Question 7

How does light travel?

Answer 7

light travels outward from its source in all directions. It travels in straight lines called rays.

Question 8

What kinds of materials allow light to pass through them?

Answer 8

Transparent materials, such as air and glass, allow light to pass through them.

Question 9

What kinds of objects do not let light pass through them?

Answer 9

Opaque objects, such as brick and wood, do not allow light to pass through them.

Question 10

What does light do?

Answer 10

Light reflects. That means it bounces off objects. Light also refracts. That means it bends of changes directions.

Question 11

What happens to colors of light?

Answer 11

Colors of light are reflected, no absorbed.

Question 12

What is electrical energy?

Answer 12

Electrical energy is the movement of electrical charges. We call it electricity. We use electrical energy to run our air conditioner, blow dry our hair.

Question 13

What is a circuit?

Answer 13

a path for electricity to go around.

Question 14

What is a circuit made up of?

Answer 14

A circuit contains a battery, wire and bulb, and switch.

Question 15

What does a battery provide?

Answer 15

provides power

Question 16

What does a bulb provide?

Answer 16

provides light

Question 17

What does a switch do?

Answer 17

opens and closes the electric circuit

Question 18

What do the wires do?

Answer 18

Wires allow the power from the battery to flow through to the bulb.

Question 19

What is mechanical energy?

Answer 19

Mechanical energy is energy that uses muscle or motor energy. (Muscles or machines). Examples - we use mechanical energy in a car when we ride to the store, in our bodies when we carry our schoolbags, and in the bus when we are taken to school.

Question 20

What is heat energy?

Answer 20

Heat energy is the transfer of energy from a warmer object to a colder object. Basically, heat energy heats things up. Example - we use heat energy when we cook, when we use blankets, and when we roast marshmallows over a fire.

Question 21

What is a conductor?

Answer 21

A conductor is a material that allows heat and/or electricity to flow through it very easy. (examples are different types of metals and water)

Question 22

What is an insulator?

Answer 22

An insulator is a material which stops the movement of heat and/or electricity. It doesn’t flow through it easily. (examples - rubber, plastic, wool, glass and wood)