Chapter 8 Review

Question 1

What is used to convert chemical energy into electrical energy stored in batteries?

Answer 1

electrochemical cells

Question 2

What are the two terminals on a battery?

Answer 2

electrodes

Question 3

What is the substance the conducts electricity called?

Answer 3

electrolyte

Question 4

What is the amount of electric potential energy per one coulomb of charge called?

Answer 4

potential difference (voltage)

Question 5

What is the unit for measuring potential difference?

Answer 5

volt

Question 6

What is the combination of electrochemical cells connected together?

Answer 6

battery

Question 7

What are the end points on a battery where we make connection?

Answer 7

terminals

Question 8

What is the energy a moving object has because of its motion?

Answer 8

kinetic energy

Question 9

What type of energy is stored in a battery?

Answer 9

potential energy

Question 10

What is a device that measures the amount of potential difference between two locations of charge separation

Answer 10

voltmeter

Question 11

What is the unit for measuring electric current?

Answer 11

amperes

Question 12

What is the continuous flow of charge in a complete circuit?

Answer 12

current electricity

Question 13

What is the amount of charge passing a point in a conductor every second?

Answer 13

current

Question 14

What is a complete pathway that allows electrons to flow?

Answer 14

circuit

Question 15

Any device transforms electrical energy into other forms of electricity.

Answer 15

load

Question 16

What is the purpose of resistance?

Answer 16

It is the property of any material that slows down the flow of electrons and converts electrical energy into other forms.

Question 17

What is the unit of measurement for resistance?

Answer 17

ohm

Question 18

What is the ratio of the voltage to the current called?

Answer 18

electrical resistance

Question 19

What is an electrical component that has a specific resistance?

Answer 19

resistor

Question 20

What is the purpose of a battery?

Answer 20

it is the source of potential energy in a circuit.

Question 21

In a battery, what form of energy is converted into electrical potential energy?

Answer 21

chemical energy

Question 22

What unit is used to measure voltage?

Answer 22

volts

Question 23

What is the purpose of the voltmeter?

Answer 23

to measure voltage

Question 24

What is the purpose of an ammeter?

Answer 24

to measure current

Question 25

What are the four basic components needed for a circuit?

Answer 25

a power source, load, a conductor, and a switch

Question 26

What device measures ohms?

Answer 26

ohmmeter

Question 27

How do you find voltage?

Answer 27

current multiply to resistance

Question 28

How do you find current?

Answer 28

voltage divided by resistance

Question 29

How do you find resistance?

Answer 29

voltage divided by current

Question 30

How much is 1 A?

Answer 30

1000 mA

Question 31

What materials are needed to produce an electrochemical cell?

Answer 31

two different metals and an electrolyte

Question 32

In a battery, what form of energy is converted into electric potential energy?

Answer 32

chemical energy

Question 33

When an electron passes through a resistor, what happens to its electric energy?

Answer 33

their electric energy is transformed into other forms of energy

Question 34

What is the purpose of a resistor?

Answer 34

Resistors can be used to control current or voltage in a circuit to provide the right amount of components in a circuit.