homework 2a vocab

Question 2

proton weighs how much more than an electron?

Answer 2

2,000x

Question 3

BTU

Answer 3

British thermal unit, unit of measurement of heat.

Question 4

calorie

Answer 4

a unit of measurement for heat in the metric system equivalent to the heat energy needed to raise the temperature of 1 gram of water by 1 degree celsius.

Question 5

horsepower

Answer 5

a unit of measurement of mechanical power for an electric and mechanical vehicles.

Question 6

electricity

Answer 6

a form of energy resulting from the existence of charged particles.

Question 7

resistance

Answer 7

the opposition to current flow in an AC or DC circuit

Question 8

impedance

Answer 8

the total opposition to current flow

Question 9

electromotive force

Answer 9

electrical pressure, the conductor that pushes electrons through a wire.

Question 10

circuit

Answer 10

a complete electrical path between two points.

Question 11

coulomb

Answer 11

a quantity of electrons equal to 6.25 x 10 to the 18th power

Question 12

joule

Answer 12

a basic metric unit of electrical energy

Question 13

watt

Answer 13

a measure of true power or for the rate of use of electrical power.

Question 14

ohm

Answer 14

unit of measurement for electrical resistance.

Question 15

volt

Answer 15

a unit of measurement of electromotive force or electrical pressure.

Question 16

power

Answer 16

the rate at which electricity is performing useful work.

Question 17

energy

Answer 17

measure of total electrical work that has been done.

Question 18

ampere

Answer 18

a unit that measure the rate of current flow.

Question 19

compound

Answer 19

a. substance made of two or different elements.

Question 20

molecule

Answer 20

smallest part of a compound made up of individual atoms.

Question 21

atom

Answer 21

the smallest part of an element that contains all the properties of that element.

Question 22

valence electrons

Answer 22

any electron located in the outer most ring of an atom.

Question 23

quark

Answer 23

theorized that proton and neutrons are made of smaller particles named quarks.

Question 24

neutron

Answer 24

a particle with no charge, same size a proton

Question 25

proton

Answer 25

positively charges particle, has large volume and large mass

Question 26

electron

Answer 26

negatively charged particle, small volume and small mass