Of the types of energy listed above,which type is most often transported through metal wires?
What is electric and heat energy is transported through wire.
100
When a candlewick burns, the flame heats the air, and the wax softens and melts. Discuss how a burning candle demonstrates two ways that heat energy flows.
What is a candle demonstrates conduction because the particles in the wax speed apart and speed up. It demonstrates two ways that heat energy flows.
100
The capture of light energy by a substance, when the light is neither reflected no refracted
What is absorption
100
Motion of a heated material due to gravity and differences in density; convection currents in the Earth`s mantle produce forces that move tectonic plates
What is convection
100
Energy that can move objects through contact; the sum of potential and kinetic energy in a system
What is mechanical energy
200
Name the three types of solar energy.
What is UV radiation, infrared radiation, and visible light.
200
When you speak, you produce wave energy. Name the energy and the medium through which this energy moves.
What is when you speak, you produce sound energy and the medium is air.
200
Energy contained in the chemical bonds between substances: food and gasoline contain chemical energy
What is chemical energy
200
The flow of electrons among atoms in a substance that conducts electricity
What is electrical energy
200
The substance through which a wave travels
What is medium
300
Describe three energy transformations that occur when a car engine burns gasoline
What is chemical energy is in the gasoline which converts to mechanical energy through the exhaust pipe.
300
Write a sentence explaining why you see a purple shirt as being purple.
What is a purple shirt is purple because it absorbs everything but purple.
300
A system of electrical parts that provides a path for an electrical current
What is circuit
300
The ability to generate a force that does work
What is energy
300
A resource that humans use more quickly than nature can replace, such as coal, natural gas, or oil
What is nonrenewable resource
400
A feather and bowling ball dropped on the Moon from the same height would hit the ground at the same time. Which object would have more kinetic energy?
What is The bowling ball has more has more kinetic energy because it has more mass.
400
Name two energy transformations occurring in the closed circuit shown above.
What is for a circuit to carry electricity, it must be closed
400
A form of heat transfer in which heat moves through a substance without the substance itself moving
What is conduction
400
The form of energy arising from the motion of all the particles in a system; heat energy moves between things that are at different temperatures; also called thermal energy
What is heat energy
400
Energy that comes from the nucleus of an atom when it splits apart or joins together with other nuclei
What is nuclear energy
500
Why do you think that the potential energy of a car parked on a hill is not completely changed into kinetic energy when the car rolls down the hill?
What is some of the kinetic energy is converted to heat energy from friction
500
What is the original source of the energy stored in coal, oil, and natural gas?
What is the original source of energy in coal, oil, and natural gas is fossil fuels.
500
The physical law stating that energy cannot be created or destroyed