quiz 1

Question 1

K

Answer 1

kilo 1,000

Question 2

u

Answer 2

Micro 0.000,001

Question 3

g

Answer 3

giga 1,000,000,000

Question 4

n

Answer 4

nano 0.000,000,001

Question 5

M

Answer 5

mega 1,000,000

Question 6

m

Answer 6

milli 0.001

Question 7

electron

Answer 7

negatively charged particle orbiting the nucleus, large in volume, small in mass

Question 8

proton

Answer 8

positive charge particle orbiting the nucleus, large in volume and small in mass, determines the atom\ic number

Question 9

neutron

Answer 9

uncharged particle in the nucleus, same size as proton, contributes to atomic mass

Question 10

quark

Answer 10

small particles that make up protons and neutrons

Question 11

valence electrons

Answer 11

an electron found in the outermost valence shell

Question 12

atom

Answer 12

basic building block of the universe, an atom is the smallest part of an element

Question 13

Molecule

Answer 13

makes up the smallest part of the compound, made up of at least 2 atoms

Question 14

compound

Answer 14

2 or more elements combined in definite proportions

Question 15

Ampere

Answer 15

unit of measure for electron flow, equal to 1 coulomb per second

Question 16

energy

Answer 16

the total work done in an electrical circuit

Question 17

power

Answer 17

the rate of doing electrical work

Question 18

volt

Answer 18

unit of measure for electrical pressure, 1 volt is equal to the amount of potential required to cause 1 coulomb to produce 1 joule of work

Question 19

relative size and mass of protons and electrons

Answer 19

protons weigh almost 1840 times more than electrons , electrons are about 1/1000 the size of protons

Question 20

of valence electrons for an insulator

Answer 20

7-8

Question 21

milli

Answer 21

1/1000

Question 22

micro

Answer 22

1/1,000,000

Question 23

nano

Answer 23

1/1,000,000,000

Question 24

kilo

Answer 24

1,000

Question 25

mega

Answer 25

1,000,000

Question 26

giga

Answer 26

1,000,000,000

Question 27

ohm

Answer 27

unit of measure for resistance to current flow

Question 28

watt

Answer 28

unit of measure for rate of use of electrical power

Question 29

joule

Answer 29

metric unit of energy equal to one watt-second amount of work done by 1 coulomb at 1 volt in 1 second

Question 30

coulomb

Answer 30

measurement of quantity of electrons equal to 6.28 x 10^18 electrons

Question 31

circuit

Answer 31

a complete path for current flow, includes a power source , load, and conductors

Question 32

electromotive force

Answer 32

voltage, the force that pushes electrons through a conductor

Question 33

impedance

Answer 33

the total opposition to current flow in an electric circuit, includes both resistive and reactive opposition

Question 34

resistance

Answer 34

opposition to current flow in an ac or dc circuit, often described as frictional opposition to electron flow

Question 35

electricity

Answer 35

the directed flow of electrons

Question 36

horsepower

Answer 36

unit of measure for mechanical power in the English system

Question 37

calorie

Answer 37

equal to the amount of energy required to raise the temperature of 1 gram of water by 1 degree Celsius

Question 38

BTU

Answer 38

a measure of heat energy in the English system

Question 39

difference between metric unit and engineering units

Answer 39

engineering units increase or decrease by units of 1,000 metric units exist in powers of 10