Show:
Terms
light
sound
Electric
Apply what you know
100

What has the ability to make a change?

Energy

100

Give two examples of how we can see light energy.

Light energy can come from a light bulb, or from the sun.
100

What is the term for how high or low a sound is?

Pitch

100
What kind of circuit allows electricity to pass through. Closed or open?
Closed circuit.
100

Is this true: can energy transform, or change, from one form into another.

Yes, energy can change from one form to another. For example, light energy can be captured by solar panels and transformed into electric energy to power a home, car, and many other things.

200

Thermal energy is needed to make a hair dryer work.

False

200
When light strikes a surface and it then bounces to another area, this is called _______.
Reflection
200

Can sound travel through space. Explain with many details.

Sounds requires a medium to travel. Gas, water, and solids are necessary. There is no air in space therefore travel cannot travel.

200
Why do the lights turn off in class when we hit the switch?
The closed circuit is then turned into an open circuit.
200
The energy of motion.
kinetic energy
300
The water in a swimming pool tends to be warmer in the daytime and cooler at night. What natural source of energy causes the difference?
Solar energy from the sun. (thermal energy)
300
When light strikes a surface and it causes the light to bend, this is called ________.
Refraction
300

What property of sound describes how high or low the frequency of sound is?

Pitch

300

How can we generate electricity without using fossil fuels?

We can use solar power, hydroelectric power, or wind power.

300

Which of the following is an example of how moving water can be a source of energy?

A hydroelectric dam generating electricity on a river

400
When the string of a guitar vibrates, it produces _______.
sound energy
400
What are three ways that we can describe how light is absorbed by a medium? Transparent, ________, and ________. You must also explain each term.
transparent - light passes through translucent - some light is able to pass through opaque - little to no light is able to pass
400
This causes sound to have a higher pitch.
Sounds waves are closer together.
400

Microwave heating food is an example of this type of energy.

What is an example of radiation/ heat energy

400

Pitch describes how low or how high a sound is. Which of the following determines the pitch of the sound waves?

Frequency

500

What form of energy is energy in motion?

Mechanical Energy

500

True or False

I can see light energy

True

500

True or False

Pitch depends on how fast or slow the object vibrates.

True

500
True or False


A stick floating in a stream is an example of wind energy.

False

500

What is a conductor.

Conductors allows electricity to easily travel through them. Some good conductors include metals. Conducts comes from the word conductus which means a carrier.