WorksheetsElectricity & Magnetism Launch Activity 24-25
Total questions: 50
Worksheet time: 25mins
What energy changes take place to make a fan spin?
Electrical energy changes to heat energy.
Electrical energy changes to mechanical energy.
Wind energy changes to electrical energy.
Heat energy changes to mechanical energy.
What produces an electrical current when a turbine is used to rotate an iron core wrapped with a coil of wire near a magnet.
fan
generator
motor
radiator
When you turn the switch on for a fan blade, which of the following happen?
from electrical to chemical
from electrical to mechanical
from mechanical to potential
from kinetic to potential
Which of these DOES NOT affect the strength of an electromagnet?
voltage of the battery
amount of material in the core
number of times the wire is looped around the core
size of the object being attracted by the core
What types of energy are made when a there is a light bulb in a complete circuit?
thermal and light
magnetism and sound
sound and thermal
light and magnetism
What produces an electrical current when a turbine is wrapped with a coil of wire near a magnet?
fan
radiator
generator
motor
Which condition will cause a magnetic field to be detected near a circuit?
A current flows through the wire.
A switch is added to the circuit.
The wire is cooled before use.
The wire is made of iron.
When the switch is closed on an electromagnet, what will most likely happen?
The battery's charge will be depleted
Rusting will be immediately observed
The iron in the nail will break down
A magnetic field will be produced.
Which of the following will always produce a magnetic force?
a long piece of copper wire
an electric field
a large static electric current
an electric current
What uses moving parts to produce electricity?
speaker
motor
generator
doorbell
Forces between charged particles are called________.
Electric force
Static force
Magnetic force
Electric field
An electric charge has an invisible electric ______around it.
force
field
fence
feirce
A circuit is a path that runs in a ____.
loop
pool
polo
path
_____ do not allow charge/current to flow.
Coconut Drs
Insulators
Insult oars
Conductors
_____ allow the charge/current to flow.
Coconut Drs
Insulators
Latin sours
Conductors
The area of force that surrounds a magnet.
Magnetic field
Celt magnified
Magnetic force
Force magnetic
What is the most important purpose of the switch?
to push the energy through the circuit
to conduct energy
to change chemical energy into light energy
to open and close the circuit
What happens when you put two magnets together and they repel?
The magnets push away from each other because like poles repel.
The magnets pull together because opposite poles repel.
What is the purpose of the wire in an electric circuit?
To plug into an outlet.
To provide energy.
To light up.
To push the energy through the circuit.
What are the names of a magnet's poles?
North and South
North and East
South and West
East and West
What happens when you put two magnets together and they attract?
They push away from each other because like poles attract.
They push away from each other because opposite poles attract.
They come together because opposite poles attract.
They come together because like poles attract.
These magnets...
attract
repeal
don't do anything
These magnets
attract
repeal
don't do anything
Where are the strongest areas of magnetic field?
far away from the poles
in the middle of the magnet
at the poles
This material does not allow electrons to flow easily.
Conductor
Insulator
Grounding
This material allows electrons to flow easily
Conductor
Insulator
Grounding
The purpose of a switch is to control if a circuit is open (electricity cannot flow) or closed (electricity can flow).
False
True
The law of conservation of energy says that energy cannot be created or destroyed, but it can change forms.
True
False
The force of attraction or repulsion of magnetic materials.
Magnetic Field
Electricity
Magnetism
Generator
Electric charges always flow from _____ areas to _____ areas.
positive; negative
neutral; negative
negative; positive
neutral; positive
Which two areas of physical science are closely related to the development of electric motors and generators?
sound and light
light and magnetism
electricity and sound
electricity and magnetism
Magnetism is a type of __________
book
animal
force
plant
True or false: All metals stick to magnets
False
True
True or False: A magnetic field is invisible.
True
False
In which way can the strength of an electromagnet be increased?
add more loops of copper wire
decrease the number of loops of copper wire
use only a straight piece of copper wire
decrease the amount of the current
buildup of electric charges in an object
protons
static electricity
electric circuit
material through which an electric charge could flow easily
insulator
fuse
conductor
material through which an electric charge does not flow easily
insulator
conductor
voltage
unit used to measure electric current
ampere
voltage
insulator
force of attraction or repulsion
magnetism
electricity
circuit
end of a magnet
pole
fuse
insulator
area around a magnet where magnetic forces act
magnetic domain
electromagnet
magnetic field
temporary magnet made by wrapping a current-carrying wire around a metal core
electromagnetism
electromagnet
solenoid
How many poles does a magnet have?
1 pole
3 poles
2 poles
o pole
How do you increase a magnetic force between two objects?
Increase Mass
Decrease Mass
Decrease the Distance
Increase the Distance
Change state of Matter
Objects with the same charge will ______________ each other.
Repel
Attract
balance each other out
remain neutral
Objects with opposite charges will ______________ each other.
Attract
Repel
Balance each other out
Remain neutral
An electric current will always follow ____.
the path toward the north pole
the path of least resistance
the path that leads to insulators
the path to the south pole
