Forms of Energy
All energy can be sorted into 2 main categories. What are they?
Kinetic and Potential
Energy that travels in a straight path and does not require a medium to travel.
light energy
What word describes the flow of electrical energy?
current
The over use of fossil fuels can lead to harmful things being released into the environment. What is this called?
Pollution
Energy created through the movement of charged particles which travels through a current.
electricity
How do emergency vehicles, like an ambulance or police car, use light and sound energy to communicate?
sirens and lights
What word describes how the thermal energy from the Sun transfers to Earth?
radiation
Would replacing burning coal as an energy resource with burning natural gas reduce the amount of pollution?
No. (They are both fossil fuels.)
Energy created through vibration and is able to travel in all directions through the use of a medium.
sound
True or False: Sound waves can travel through all states of matter?
True
What word describes the path in which electric current can flow?
Circuit
Name 2 examples of a renewable resource.
wind, water, solar, plants, animals, thermal
Energy created by the breakdown of particles through chemical reactions. Used to create the electrical energy of most batteries.
chemical energy
Although light travels in a wave, it also consists of what other materials?
particles of energy (which is why it does not need a medium)
Which is a better thermal conductor: water, iron, or wood?
iron
Would using the air conditioner less in the summer reduce the use of fossil fuels?
Yes (You are using less electricity)
Energy released when links between the particles that make up matter are broken.
Nuclear energy
Many animal tanks use lights to regulate the temperature inside the tank. This is evidence that light energy also has the potential to produce and transfer what other kind of energy.
heat
How does the use of a switch control the flow of electrical energy in a circuit.
It opens the circuit so that the flow of energy stops and closes it to allow the flow to start again.
True or False: Coal and Granite are a renewable resource because there is so much of it available to use.
False. (There is a lot of it, but it takes millions of years to form. Once it is gone, there will be no more to use.)