______________________________- is the buildup of electric charges on an object

Charging by _________________is the transfer of charges by touching or rubbing.

Electric current must have a closed _______________path to follow.

A______________________ is a device where chemical reactions create electrical energy.

_______________________ is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other.

Most wall sockets give a voltage difference of ________________V.

_______________________is the net movement of electric charges in one direction.

When any part of a series circuit is disconnected, no current flows through the circuit.

A __________________________ is a safety device that stops wires from getting too hot, it can bust or go out.

Which best describes what happens to the circuit when you cut the lights ON?

A negatively charged object has_______________electrons than an object that is neutral.

______________________refers to the properties of magnets and how magnets interact when they are near each other

Which type of metals usually have a magnetic field?

The_______________________exerts a force on other magnets and objects that are made of magnetic material.

A ____________________is a device that uses an electromagnet to measure electric current

__________________________________use electromagnetic induction to change mechanical energy into electrical energy

An ___________________________________reverses or changes the direction of the current twice during each rotation of the coil.

A _____________________is used to increase or decrease the voltage of an alternating current.

The magnets are connected to a__________________________, a large windmill-like wheel.

_____________________________is the tendency for a material to oppose, or go against, the flow of electrons.

The batteries used in a flashlight are called _________________________ batteries.

Greeks discovered a mineral that could attract pieces of iron.

This mineral is now called__________________________.

Like magnetic poles ____________each other and unlike poles______________ each other

_________________are the places on a magnet that exert, or put forth, the strongest magnetic force

__________________________a permanent magnet causes it to lose its magnetism

A ________________________________________is a large group of atoms with their magnetic poles lined up in the same direction.

Earth’s Geographic North Pole is the = _______________________ Magnetic Pole.

Earth’s Geographic South Pole is the = _______________________ Magnetic Pole.

A __________________is the matter through which a wave travels

This creates ______________________waves that carry energy outward and cause an earthquake.

A medium can be a_______________________, a ________________, a __________________, or a combination of these.

_______________________is a measure of the energy that a wave carries.

A _______________________ is a repeating disturbance or movement that transfers energy through matter or space.

Compressional waves are also called ________________________ waves.

A ________________________is the area in a longitudinal wave where the medium is most spread out.

A __________________is the distance between one point on a wave and the nearest point just like it.

_________________________are waves that travel through a medium.

In a __________________________________________wave the medium moves back and forth along the same direction that the wave travels.

The_______________________is the amount of time it takes for one wavelength to pass a particular point.

All ______________________are made by something that vibrates.

What part of the ear amplifies waves?

____________________is a quick, rhythmic back-and-forth movement.

the amount of energy that flows through a certain area in a specific amount of time

__________________________is energy that travels and spreads out as it goes emitted by stars and space objects

A material that only absorbs or reflects light is_______________________.

_________________________ is known as the bending of light.

__________________________result when the air at ground level is much warmer or much cooler than the air above ground level.

Objects that reflect all wavelengths of visible light appear to be_______________

The 3 tiny bones in your ear are called the_________________________

________________waves are made by vibrating electric charges and can travel through space where there is no matter.