Absorption is the capture of light energy by a substance, when the light is neither reflected nor refracted.
100
What is convection?
Convection is the motion of heated material due to gravity and differences in density; convection currents in Earth's mantle produce forces that move tectonic plates.
100
What is mechanical energy?
Mechanical energy is energy that can move objects through contact; the sum of potential and kinetic energies in a system
100
What is radiation?
Radiation is energy that is emitted in the form of waves and particles.
100
Of all the energy types listed above which type is most often transported through metal wires?
Electrical and Heat energy.
200
What is chemical energy?
Chemical energy is energy contained in the chemical bonds between substances; food and gasoline contain chemical energy
200
What is electrical energy?
Electrical energy is the flow of electrons among atoms in a substance.
200
What is medium?
Medium is the substance through which a wave travels.
200
What is reflection?
Reflection is the change of direction of a wave as it bounces off a surface.
Circuit is a system of electrical parts that provides a path for an electrical current.
300
What is energy?
The ability to generate a force that does work.
300
What is a nonrenewable resource?
A resource that humans use more quickly than nature can replace, such as coal, natural gas, and oil.
300
What is a renewable resource?
A renewable resource is a resource that is replaced through natural cycles such as solar, wind, and hydroelectric power.
300
Describe 3 energy transformations that occur when a car engine burns gasoline...
Chemical energy is converted to mechanical energy. Heat energy goes through the exhaust pipe.
400
What is conduction?
Conduction is a form of heat transfer in which heat moves through a substance without the substance itself moving.
400
What is heat energy?
Heat energy is 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.
400
What is nuclear energy?
Nuclear energy is energy that comes from the nucleus of an atom when it splits apart or joins together with other nuclei.
400
What is solar energy?
Solar energy is energy that comes from the sun, includes light.
400
A feather and a bowling ball are dropped at the moon from the same height. Which would have more kinetic energy?
The bowling ball would have more kinetic energy because it has more mass.
500
What is conservation of energy?
Conservation of Energy is the physical law stating that energy cannot be created or destroyed.
500
What is kinetic energy?
Energy that arises from a objects motion.
500
What is potential energy?
Potential energy is energy that results from an object's position.
500
What is a wave?
A wave is a repeating vibration that travels through space and time.
500
When you speak, you produce wave energy. Name one medium though which this energy moves.
When you speak sound energy is produced and the medium is the air.