Section 3 Part 1- Physics

Question 0

What is an atom

Answer 0

An atom is the smallest unit in which an element can exist

Question 1

Static electricity by definition

Answer 1

Is non moving electrical charge always formed by friction “rubbing”

Question 2

What is an atom composed of?

Answer 2

Protons “positive charge” middle (heavy)

neutrons “no charge” middle (heavy)

and electrons “negative charge” outside circles

Question 3

The number of protons and electrons are?

Answer 3

Equal

Question 4

Elements have a positive or negative charges?

Answer 4

They have an even charge

Question 5

When atoms rub together the electrons

Answer 5

Get rubbed on or off of the atom

Question 6

Two types of static electricity

Answer 6

Negative: is caused when electrons are rubbed on

Positive: is caused when electrons are rubbed off

Question 7

Nature of static charge
\++
--
-+
-,+-
\+,-+

Answer 7

Repulse 
Repulse
Come together
Attracted 
Attracted

Question 8

Declaring static charge: two ways

Answer 8

Touch: you can feel the charge as you get close

Electroscope: a device used to detect the presence of an electric charge

Question 9

Uses of static

Answer 9

Sandpaper 
Swifter
Saran Wrap
Rubbing sticks together to make fire
Matches
Photocopiers

Question 10

Size of static: static is measured in

Answer 10

Coulombs (C) 1c = 6.24 ✖️ 10 to the power of 18 electrons

Question 11

Current electricity by definition

Answer 11

Moving electrons

In order for electrons to move they need a pathway and a desire to move

Question 12

Pathways for electrons conductors by definition and different qualities

Answer 12

A material that allows electrons to move freely

Good super but no perfect
Good=coper titanium
Super= good and silver
Metals tend to be good

Question 13

Note about conductors and current

Answer 13

Conducts must be good enough quality for the current

Question 14

The purpose of insulators

Answer 14

To prevent electrons

To control current (where electrons move) we always protect conductors with insulators

Question 15

Good and great insulators

Answer 15

Rubber plastic dry wood fibre glass air glass ceramic

Question 16

What is the desire for electrons to move

Answer 16

Electrical potential

Question 17

What are the two ways we can generate electrical potential

Answer 17

Separate opposite charges

Force like charges together

Question 18

What is to separate opposite charges

Answer 18

Take atoms and pull the electrons and protons in opposite direction from each other

Question 19

How is electrical potential measured

Answer 19

It is measure in voltage

Question 20

Storing electrical potential, in?

Answer 20

Stored in batteries or cells

First Batterie was made of carbon and zinc

Question 21

Series, effects

Answer 21

Has a single pathway for electrons to travel

An overall increase in voltage with the addition of more cells in a series,but the batterie only lasts as if it was only one batterie

Question 22

Parallel, effects

Answer 22

There are many batteries under each other

The batterie life lasts way longer but it is dimmer

Question 23

Current is measured in?

Electrical potential is measured in?

Answer 23

Current=Amps what it actually is, current is movement of electrons
Electrical potential=voltage what could be

Because no conductor is perfect the voltage and amps cannot be the same

Question 24

Symbols 
Cells 
Light
Bell
Switch
Resistor 
Voltmeter 
Ammeter

Answer 24

You should know

Question 25

Voltage is
Amperes is
Resistance is

Answer 25

Voltage is electrical potential (V)
Amperes is current what is (I)
Resistance is anything that prevents electrons flowing in the circuit (^)

Question 26

R=
V=
I=
This is called

Answer 26

R=v/I
V=i✖️R
I=v/r

Ohms law

Question 27

Where are voltmeters placed?

Answer 27

They measure the electrical potential and therefore are placed parallel to the source (batteries/cells)

Question 28

V
I
R
Turns into to

Answer 28

V
A
Ohms (^)