Chapter 11 (sec.1-2)

Question 0

What is an element?

Answer 0

A pure substance that consists of only one type of atom.

Question 1

What is an atom?

Answer 1

The smallest unit of a material that still has all of the properties of that material.

Question 2

What is a nucleus?

Answer 2

The center portion of an atom, made up of tiny particles called protons and neutrons.

Question 3

What is a proton?

Answer 3

A positively charged particle.

Question 4

What is a neutron?

Answer 4

Has the same mass as a proton, but does not carry any charge.

Question 5

What is an electron?

Answer 5

A tiny particle that carries a negative charge.

Question 6

What is current?

Answer 6

The flow of electrons.

Question 7

What is an ampere?

Answer 7

The unit used to measure the flow of electrical current?

Question 8

What is a volt?

Answer 8

The unit used to measure electromotive force.

Question 9

What is Ohm’s Law?

Answer 9

An equation that describes the relationship between current, voltage, and resistance.

Question 10

What is resistance?

Answer 10

The flow of current through a material.

Question 11

What is an ohm?

Answer 11

The unit of resistance that measures how well a material conducts electricity.

Question 12

_______ charges repel each other

Answer 12

Like charges repel each other

Question 13

What is an insulator?

Answer 13

A material in which electrons do not move freely.

Question 14

What is an example of an insulator?

Answer 14

Ex: foam, plastic, etc.

Question 15

_________ charges attract

Answer 15

Opposite charges attract.

Question 16

What is a conductor?

Answer 16

A material on which electrons can move freely.

Question 17

What unit do we measure voltage in?

Answer 17

Volts

Question 18

What unit do we measure current in?

Answer 18

Amps

Question 19

What unit do we measure resistance in?

Answer 19

Ohms

Question 20

What is a semiconductor?

Answer 20

A material that is neither a good insulator nor a good conductor.
Ex: silicon

Question 21

What is a diode?

Answer 21

Lets current flow in one direction but not the other

*LED

Question 22

What is a thermistor?

Answer 22

Has a resistance that changes with the temperature. (Thermometer)

Question 23

What is a photoresistor?

Answer 23

Has a resistance that changes with the amount of light that hits it.

Question 24

What is a capacitor?

Answer 24

Components that store electrical charge.

Question 25

What is a circuit?

Answer 25

A group of components connected together to do a specific job.

Question 26

What is an Integrated Circuit?

Answer 26

A complete circuit on a tiny piece of semiconductor

Question 27

What is an analog circuit?

Answer 27

An electronic circuit that works with analog signals.

Question 28

What is a digital circuit?

Answer 28

Information is coded into a series of 0s and 1s

Question 29

What is a bit?

Answer 29

Each 0 or 1. Shot for Binary digIT

Question 30

What are electronic components?

Answer 30

A device that controls the flow of electricity.

Question 31

What is a resistor?

Answer 31

Controls the flow of current through a circuit.

Question 32

What is a transistor?

Answer 32

A type of resistor that lets a small amount of current control the flow of a much larger amount of current

Question 33

An integrated circuit is the size of a

Answer 33

Chip

Question 34

What is the central portion of an atom called?

Answer 34

The nucleus

Question 35

What is a positively charged particle

Answer 35

A proton

Question 36

What is a particle that carries a negative charge?

Answer 36

An electron

Question 37

What is: | A group of components connected together to do a specific job?

Answer 37

A circuit

Question 38

What is: | A material that is neither a good insulator nor a good conductor?

Answer 38

A Semiconductor

Question 39

What is a force that produces a current?

Answer 39

Electromotive force