Tech Flashcards
Where does plastic come from
Plastics are made from crude oil
Thermo setting plastic is
Plastic that can only be shaped once
Thermo plastics is plastic that can
Be shaped over and over again
How many types of plastics are there
2
Thermo plastics shapes are
Dots that connect in the middle only
Thermo setting is
Little dots connected all different ways
What life span is plastics from
Dinosaur oil>refinery>plastic granules
What is O
Single plastic molecule
An O with a line in the middle is
Polymer is a chain of plastic molecules
Voltage symbol
V
Resistance symbol
R
Current symbol
I
Voltage defeninition
The force that makes electrons move
Voltage unit
Volts with a tiny v sign
What is Resistance
A force that slows down the electrons
Resistance unit
Ohms
Current definition
The speed of the flow of electrons
Current unit
Amps with a tiny (a) beside it
Conductor
It’s a material that let’s electricity flow-metal
Insulator
It’s a material that dies not let electricity flow - plastic,wood
What is the battery symbol
–
|
|
–
—-
|
Switch symbol
|
—–
Led
__
\/
___»_space;
Battery description
This is the power source of the circuit
Switch description
Makes or breaks the circuit
LED MEANING
Light emitting diode
LED description
When current flows through the LED it lights it up
Resistor sign
|
□
|
Resistor description
This component restricts the flow of current in a circut
What is electricity
Electricity is the motion of electrons
What is a electron
A very small negatively charged particle
