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100
) A device with one or more simple machines among its parts
What is compound machine?
100
The ability to cause change or to do work
What is energy?
100
Heat transfer between two objects that touch
What is conduction?
100
A grooved wheel with a rope or chain around it
What is pulley?
100
type of heat transfer causes winds and air currents
What is convection?
200
It is easy to observe vibrational motion.
false
200
The speed of an object in a particular direction
What is velocity?
200
type of Energy is stored in the bonds between atoms
What is chemical energy?
200
an inclined plane that is wrapped in a spiral
What is screw?
200
Mechanical energy of a moving object
What is kinetic energy?
300
A device that changes mechanical energy into electrical energy
What is generator?
300
Mechanical energy due to position
What is potential energy?
300
The force of an object on a lever
What is load?
300
a measure of how fast an object is moving
What is speed?
300
a closed path along which current can flow
What is electric current?
400
the low that explain that a rock sitting on the ground to remain in the same place unless a force acting on it,
What is first law of motion?
400
the transfer of thermal energy by the movement of the particles of a liquid or a gas
What is convection?
400
a material that transfers heat easily
What is conduction?
400
a material that does not easily transfer heat
What is insulator?
400
The bouncing of light rays off the surface of a materia
What is reflection?
500
A force applied to the end of a lever to lift a load
What is effort force?
500
The change in direction of light when it moves from one material to another
What is refraction?
500
A support on which a lever rests while moving or lifting an object
What is fulcrum?
500
the total kinetic and potential energy of the particles in a substance
What is thermal energy?
500
a large number of atoms with their magnetic fields pointing in the same direction
What is magnetic domain?