Mid term

Question 1

force

Answer 1

a push or pull

Question 2

attract

Answer 2

opposite charges, positive and negative, will attract.

Question 3

repel

Answer 3

like charges, two positive charges or two negative charges, will repel each other.

Question 4

atoms

Answer 4

made up of protons, neutrons, and electrons. smallest unit of matter.

Question 5

protons

Answer 5

positive, found in inner orbits of atom with neutrons

Question 6

electrons

Answer 6

negative, found in the outer orbits of an atom

Question 7

neutrons

Answer 7

neutral, found in inner orbits of atom with protons

Question 8

what are three ways to charge a particle?

Answer 8

friction, conduction, induction

Question 9

friction

Answer 9

the process of creating an electric charge on an object by rubbing it against another object.

Question 10

conduction

Answer 10

when electrons move from one object to another by direct contact.

Question 11

induction

Answer 11

when an object is charged when charges in an uncharged metal object rearrange without direct contact with a charged object; to charge an object by bringing a charged object close enough to it, causing a rearrangement of the charges.

Question 12

static electricity

Answer 12

buildup of electrical charges on an object.

Question 13

battery

Answer 13

a device that produces an electric current by converting chemical energy into electrical energy.

Question 14

circuit

Answer 14

a complete, closed path through which electric charges flow.

Question 15

current

Answer 15

a continuous flow of charge caused by the motion of electrons; flow of electrons

Question 16

electric circuits

Answer 16

control the movement of electric charges or electricity.

Question 17

the path of an electric circuit is a…

Answer 17

closed loop

Question 18

closed circuit

Answer 18

a complete circuit where the electric current flows (electricity)

Question 19

open circuit

Answer 19

there is a break along the line, and the current stops

Question 20

what 3 things does a simple circuit need?

Answer 20

a load [object being charged], energy source [battery], conductors [wires]

Question 21

a series circuit

Answer 21

one pathway for electric current to flow, if there is any break in the circuit, the charges will stop flowing

Question 22

a parallel circuit

Answer 22

two or more pathways for electric current to flow, if there is any break in the circuit, the charges will not stop flowing to the rest of the circuit

Question 23

a conductor

Answer 23

a material in which charges can move easily. Gold, silver, copper and aluminum are good examples

Question 24

an insulator

Answer 24

a material in which charges can not move easily. Examples would be wood, plastic, and rubber

Question 25

In order for electric current to flow, the switch must be...?

Answer 25

closed

Question 26

electricity

Answer 26

the flow of electrical energy from one place to another.

Question 27

all magnets have...? [how many poles?]

Answer 27

two poles

Question 28

what exert forces on each other and is surrounded by a magnetic field?

Answer 28

a magnet

Question 29

what is the end of the magnet called?

Answer 29

a magnetic pole

Question 30

North Pole

Answer 30

the end of the magnet that always ends up pointing to the north

Question 31

South Pole

Answer 31

the opposite end of the magnet points to the south

Question 32

Magnetic poles are always in...?

Answer 32

pairs (north, south)

Question 33

what happens if a magnet is broke in half ?

Answer 33

each half gains a new pole