WorksheetsSci 9 Unit D 1.0 Electricity, Safety, Cells
Total questions: 64
Worksheet time: 1hrs 3mins
The build up of charges on an object is called
static electricity
current electricity
chemical electricity
What kind of electricity flows through circuits?
static electricity
current electricity
What do we call the path through which electricity flows?
switch
wave
load
circuit
Electricity is the movement of _____.
protons
electrons
molecules
atoms
copper
wool
rubber
cotton
Which subatomic particles 'flow' through a conductor?
volts
watts
amperes
Amperes
This term refers to the amount of electrons flowing through a substance.
Current
Voltage
Which atomic charges attract?
Positive and Positive
Negative and Negative
Negative and Neutral
Positive and Negative
Electric charges that are 'alike' will _______ each other.
Attract
Repel
Electric charges that are opposite_______ each other.
Attract
Repel
If an object has a higher number of electrons than protons, what type of charge does it have?
A positive charge.
A negative charge.
A neutral charge
No charge at all
The liquid in a wet cell that allows electrons to move from one material to another is called...
Terminal
Paste
Electrolyte
Electrode
a type of cell that contains solid or 'pastelike' electrolyte:
Wet Cell
Dry Cell
Thermocell
Electrocell
Materials that tightly hold on to electrons are considered
If an object has an equal number of protons and electrons, what type of charge does it have?
positive
negative
neutral
2 different elements that lose or gain electrons in an electrochemical cell:
wet cells
dry cells
electrolytes
electrodes
In the figure shown what is the load?
the light bulb
the wires
the battery
the electrons
What is the name of the process of passing electricity through water to separate it into its elements?
electrorefining
electroplating
electrolysis
electrochemistry
In the figure shown below, the electrode is the acid
True
False
Which unit is used is used to measure how much electrical energy an electron carries in an electric circuit?
Ampere
Volt
You come across a truck with a power line downed over the hood. The driver is still sitting inside. How would you instruct them to get out of the vehicle if the vehcle was on fire?
You would carefully remove the powerline so they can get out.
This device is a _____
circuit breaker
cell
open circuit
current
The human body is a conductor of electricity.
true
false
In the event that someone is being shocked by electricity you should NEVER _____________.
call an adult
call 911
touch them
yell for help
An appliance isn't grounded
What type of electricity can power devices?
Millions of electrons discharge from your finger
The doorknob becomes an insulator
What is the term for a reusable safety switch that opens the circuit when the current becomes too high?
third prong
fuse
circuit breaker
short circuit
breaking down a compound using a current
producing a compound using a current
A 15 A circuit breaker is added to a circuit. If you plug in 3 devices with 3A, 2A & 5A, how many amps can a fourth device have if it's plugged into the same circuit?
5A
4A
3A
2A
Which 2 electrodes would give the highest voltage in an electrochemical cell?
zinc + zinc
copper + copper
copper + zinc
copper + carbon
Which would be the best electrolyte in an electrochemical cell?
sugar water
tap water
distilled water
sulfuric acid
How many 1.5 V cells are in a 6V battery?
4
3
2
1
When electrons do not flow through a load and instead flow where they are not intended to flow, it is called
current
electrolysis
short circuit
charge separation
A battery is made up of ...
fuses
water
cells
static charges
Electricity is the movement of _____.
ions
molecules
atoms
Circuit breakers have a bimetallic switch that bends if the circuit is overloaded.
Which is the best combination of materials to produce the highest current in a wet cell?
copper, copper, sugar water
copper, copper, vinegar
carbon, zinc, vinegar
copper, zinc, distilled water
Which is the best combination of materials to produce the highest current in a wet cell?
copper, zinc, sugar water
zinc, zinc, vinegar
copper, zinc, saltwater
copper, zinc, distilled water
A lemon can be used as an electrolyte to produce electricity.
true
false
A person putting their finger in an electrical wall outlet can cause a short circuit.
true
false
The amount of charge on electrons in a circuit is called
current
voltage
The diagram shows a
closed circuit
open circuit
A student is testing the conductivity of 4 different subtances. She uses a 2.5 V battery and records the current in the circuit in each of the 4 substances. The chart indicates the current measured. Which substance is an insulator?
Q
R
S
T
In the diagram, the copper penny and paper clip function as
sites of electrical insulation
electrolytes
electrodes
sites of electrical energy storage
Which would be the safest action to take during a thunderstorm?
keep playing baseball
go to a hilltop
go sit in a car
stand in the middle of a field
Which would be the safest action to take during a thunderstorm?
keep playing golf
stand under a tree
go inside a shelter
sit in a golf cart
Which of these devices is a reusable way to interrupt current in a circuit as a safety mechanism?
circuit breaker
fuse
The amount of force that pushes the electrons through a circuit is called...
What is Current?
A stream or flow of electrons in one direction.
The force of the electrons in a circuit.
Measures how the material reduces the flow of current.
A path in which electrons flow.
