Chapter 8 Review

Question 1

A ________ circuit has only one path for electricity to travel

Answer 1

series

Question 2

An ___________ circuit is a very small circuit with all the parts built into it

Answer 2

integrated

Question 3

A ________ circuit has multiple paths for electricity to travel

Answer 3

parallel

Question 4

A ________ is a continuous unbroken path

Answer 4

circuit

Question 5

Define magnet

Answer 5

any material that has the ability to attract iron

Question 6

A ___________ uses a magnet to convert motion into electrical energy

Answer 6

generator

Question 7

A material through which electricity cannot flow

Answer 7

insulator

Question 8

a liquid or paste substance that conducts electricity

Answer 8

electrolyte

Question 9

a material that allows electricity to flow through it easily

Answer 9

conductor

Question 10

a material that reduces the flow of electricity

Answer 10

resistor

Question 11

The brain of the computer that tells the other parts of the computer what to do is called the _____ _______ ________.

Answer 11

central processing unit - CPU

Question 12

Know what makes a good insulator

Answer 12

plastic, wood, and glass

Question 13

a switch is a conductor that can moved to close or open the _______.

Answer 13

circuit

Question 14

What is the area of magnetic force around a magnet called?

Answer 14

magnetic field

Question 15

Integrated circuits signal information by open and closing electrical circuits in __________.

Answer 15

sequence

Question 16

Static electricity occurs when electrical charges build up on the _________ of one _________.

Answer 16

surface / object

Question 17

Two objects rubbing together produce ________ electricity.

Answer 17

static

Question 18

Magnetic force is strongest where?

Answer 18

at the poles

Question 19

A _______ _______ has only one path, or one circuit, for the electricity to travel.

Answer 19

series circuit

Question 20

Who discovered that adding a metal core to a coil of wire increased the magnetism?

Answer 20

William Sturgeon

Question 21

What unit measures how much current flows through a given part of a circuit in one second?

Answer 21

ampere

Question 22

Who discovered that current traveling through a wire produces a weak magnetic field in the live wire?

Answer 22

Hans Christian Oersted

Question 23

Which unit measures the amount of electrical push, or force, in a circuit?

Answer 23

volt

Question 24

Who discovered that moving a magnet around or through a loop of wire produces electricity in the wire? (2 people)

Answer 24

Joseph Henry & Michael Faraday

Question 25

A coil of wire with a core attached to an electrical source is what?

Answer 25

electromagnet

Question 26

The filament in a light bulb is an example of what?

Answer 26

resistor

Question 27

What is one way magnets and static electricity are similar?

Answer 27

Both can attract and repel objects

Question 28

What is the difference between electrical devices and electronic devices?

Answer 28

Electronic devices can communicate information, but electrical devices cannot.

Question 29

Describe one way magnetism produces electricity

Answer 29

Moving a magnet around or through a loop of wire produces electricity in the wire. Moving a wire between the north and south poles of two magnets also produces electricity in the wire.

Question 30

Which unit measures power, or how fast work is done?

Answer 30

watt