Chapter 8 - Bju Science 6 Test

Front 1

resistor

Back 1

a material that reduces the flow of electricity

Front 2

conductor

Back 2

a material that allows electricity to flow through it easily

Front 3

electrolyte

Back 3

a liquid or paste substance that conducts electricity

Front 4

generator

Back 4

uses a magnet to convert motion into electrical energy

Front 5

insulator

Back 5

a material through which electricity cannot flow

Front 6

circuit

Back 6

a continuous unbroken path

Front 7

integrated circuit

Back 7

a very small circuit with all the parts built into it

Front 8

magnet

Back 8

any material that has the ability to attract iron

Front 9

parallel circuit

Back 9

has multiple paths for electricity to travel

Front 10

series circuit

Back 10

has only one path for electricity to travel

Front 11

ampere

Back 11

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

Front 12

volt

Back 12

measures the amount of electrical push, force, in a circuit

Front 13

watt

Back 13

measures power, or how fast work is done

Front 14

electromagnet

Back 14

a coil of wire with a core attached to an electrical source

Front 15

resistor example

Back 15

filament in a light bulb

Front 16

discovered that a magnet around or through a loop of wire produces electricity in the wire

Back 16

Joseph Henry and Michael Faraday

Front 17

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

Back 17

Hans Christian Oersted

Front 18

discovered that adding a metal core to a coil of wire increases the magnetism

Back 18

William Sturgeon

Front 19

T or F- Both magnets and electricity can attract and repel objects

Back 19

True

Front 20

T or F- The strength of an electromagnet can be affected by the size of the core or the number of coils around the core.

Back 20

True

Front 21

A battery works as a result of ____________ ____________ and the movement of _____________.

Back 21

chemical reaction; electrons

Front 22

Select correct choice:
Electronic or Electrical devices communicate information.

Back 22

electronic

Front 23

Describe one way magnetism produces electricity

Back 23

---

Front 24

why does a house or building have electrical wiring arranged in parallel rather than a series circuit? explain

Back 24

---

Front 25

wood is an ___________________ of electricity, while metal pole is a __________________ of electricity.

Back 25

insulator; conductor

Front 26

T or F- the brain of a computer is the central processing unit (CPU).

Back 26

True

Front 27

The area of magnetic force around a magnet is called the magnetic field.

Back 27

True

Front 28

T or F- Magnetic force is strongest at the middle of the magnet.

Back 28

False. The magnetic force is strongest at the poles of a magnet.

Front 29

Select best choice. Plastic, wood and glass are good CONDUCTORS OR INSULATORS of electricity

Back 29

Insulators

Front 30

T or F- Static electricity occurs when a circuit and a power source allow electrons to move

Back 30

False

Front 31

T or F- Current electricity is produced when charges build up on the surface of an object.

Back 31

False

Front 32

T or F- Integrated circuits signal information by opening and closing electrical circuits in sequence.

Back 32

True