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Lesson 4
Lesson 5
100
The ability of a material to transfer heat.
What is thermal conductivity?
100
The substance through which a wave travels.
What is medium?
100
A material or an object that blocks light completely.
What is opaque?
100
When a conductor shares it excess charge with a much larger conductor.
What is grounding?
100
Electric current that rapidly changes direction.
What is an alternating current?
200
The passing of heat through a material.
What is conduction?
200
A sound wave being reflected.
What is an echo?
200
Colored glass lets light through but blurs it this is called.
What is translucent?
200
Ohms measure this.
What is resistance in electricity?
200
A device that creates electric currents by spinning an electric coil between the poles of a powerful magnet.
What is a generator?
300
This substance is a better conductor than a liquid or a gas.
What is a solid?
300
Sound travels the slowest through this.
What is a gas?
300
An electric circuit that produces a magnetic field.
What is an electromagnet?
300
this is formed when an electric current passes through an unbroken path of conductors.
What is a circuit?
300
a device that lowers the voltage of electricity.
What is a transformer?
400
The total amount of thermal energy an object releases.
What is heat?
400
The loudness of a sound depends on this.
What is amplitude?
400
When light reflects a surface it resembles this:
What is wave?
400
this measures electrical energy.
What is a volt?
400
electric currents create...
What are electromagnets?
500
The measurement of the average energy of molecules.
What is temperature?
500
This area in outer space contains no particles for sound to travel through.
What is vacuum?
500
The bending of light rays.
What is refraction?
500
objects with opposite charges stick together.
What is static electricity?
500
the poles of a magnet.
What is north and south poles?