Sound
How does sound travel?
Using vibrations
What is a natural source of light energy?
The sun
Lightning is a form of electric energy. What energy transfers take place?
Name 3 renewable resouces.
Solar, wind, and water
Name at least one major natural resource.
Coal, oil, and natural gas.
What type of matter can sound travel through?
All types: solid, liquid, and gas
Which object produces both heat and light energy? *Hint-you use them on your birthday*
burning a candle
What is the difference between open and closed circuits?
Closed circuits allow electric energy to flow, open circuits do not.
Which renewable energy resource uses moving water to generate electricity?
Hydroelectric
What makes nonrenewable resources nonrenewable?
It takse millions of years for them to regenerate.
What happens when sound vibrations end?
The sound stops being produced.
How does light energy usually travel through air?
In straight lines
What must a simple electric circuit have for electric current to flow continuously?
*hint - it needs to be turned on*
A button or switch
Which is a possible negative environmental impact of building a hydroelectric dam?
Fish popluations are effected
What can happen when oil spills into an ocean?
Animals can be harmed, the water and soil become polluted, and it is difficult to clean up.
A student taps a metal spoon against a glass cup. The student hears a ringing sound. What caused the sound?
The cup vibrated after being struck.
Two students place ice cubes on different surfaces. One ice cube is placed on black cardboard, and the other is placed on white paper. The ice cube on the pavement melts faster. What is the BEST explanation?
Darker colors absorb heat, while lighter colors reflect it
Mia connects a battery, wires, and a light bulb. The bulb lights up. What energy transformation is taking place?
Electric energy flows from the battery through the wires to transfer into light energy.
Which is a possible negative environmental impact of building a windmill?
Birds and bats could be injured or killed.
Why does turning off unused lights help conserve nonrenewable resources in places that use fossil fuels for electricity?
It reduces electricity demand, so less fossil fuel may need to be burned.
A student places a ringing alarm clock inside a closed container. The sound becomes quieter when thick towels are wrapped around the container. Why?
The towels absorb some of the sound energy.
A student shines a flashlight at a wall. She places a cardboard box between the flashlight and the wall. A shadow forms. Why?
The cardboard blocks the light
A student builds a circuit with a battery, wires, and a bulb. The bulb does not light because one wire is disconnected. Why?
The circuit is open so electric energy can't pass through.
Why are renewable resources renewable?
They are constantly regenerating
A coal power plant is located near a river. Scientists discover that waste from the plant is entering the water and harming fish. What is the best solution?
Prevent the waste from entering the river and use safer waste-management methods.