WorksheetsUnit #5 Review
Total questions: 32
Worksheet time: 16mins
This results from an interaction between electrically charged particles.
electromagnetic force
electromagnet
attract
repel
A temporary magnet with a magnetic field produced by electric current.
electromagnet
magnetic field
current
attract
pull together
attract
repel
current
magnetic strength
push away
repel
attract
magnetic forces
producer
Students rubbed a balloon across a pillow to give it an electric charge. They found that the charged balloon could pick up pieces of paper. What data could the students collect to tell them if the electric charge on the balloon is getting stronger?
The length and width of the balloon
The number of pieces of paper picked up
The size of the pillow
The distance the balloon was rubbed,
This table shows the amount of staples picked up by an electromagnet with various amounts of coils wrapped around the nail. Based on the information in the table, what would most likely be the amount of staples picked up with 60 coils of wire wrapped around the nail?
71
48
62
57
This scrapyard electromagnet is able to lift heavy pieces of metal and move them from place to place. How is the metal able to release from the electromagnet and fall into the new location?
A switch can shut off the current of electricity causing the magnetic field to stop, releasing the metal pieces.
Static electricity is released causing the metal to fall downward.
A stronger magnet below the metal attracts the pieces, removing them from the magnetic force above.
The crane shakes the large metal pieces off as they fall in the proper place.
The fact that the needle in a compass will point north supports the idea that?
all metals are magnetic
earth has a magnetic field
opposite poles repel each other
earth's gravitational pull keeps it in orbit around the sun
Two negatively-charged balloons are being moved closer together. Describe the force they exert on each other.
Opposite charges attract each other
like charges repulse each other.
the force will pop them
This word means "pull together"
attract
repel
neutral
current
To force something to move away or apart.
repel
attract
charge
pull
A temporary magnet with a magnetic field produced by electric current.
electromagnetic
magnetic strength
electric charge
shock
What tells us how strong a magnet is?
magnetic strength
charged particle
magnetic field
current
This results from an interaction between electrically charged particles.
charged particle
repel
electromagnetic force
An area where magnetic materials are attracted or repelled by the magnet.
corn field
magnetic field
electromagnetic
A form of energy available through a conductor
electromagnetic
magnetic charge
electric charge
The flow of electric charge through an object
electromagnetic force
shocking
current
A particle with either a positive or negative charge
magnetic strength
charged particle
attraction
matter with a surplus or deficiency of electrons
electric charge
charged object
electromagnetic
Balloons receive an electric charge when rubbed against your hair, which allows the balloon to pick up small pieces of foil. What data could students collect to tell them if the charge on the balloon is getting stronger?
The number of times the balloon was rubbed against your hair
The length and width of the balloon
The length of your hair
The number of small pieces of foil the balloon picked up
A compass needle will point north. What supports this fact?
Opposite poles repel each other.
All metals are magnetic.
Earth has a magnetic field
Earth's gravitational pull keeps it in orbit around the sun.
This electromagnet is being used to move large pieces of scrap metal from a building that was torn down. How is the scrap metal able to release from the electromagnet and fall into the new desired location?
Static electricity is released causing the metal pieces to fall downward.
A switch can shut off the current of electricity causing the magnetic field to stop, releasing the metal pieces.
The crane shakes the large pieces of metal as they fall into the proper place.
Which choice best describes a gravitational field?
A force that pulls people to the Earth.
A bend in the space-time continuum that attracts masses together over a distance.
A force that attracts oppositely charged particles.
A bend in the space-time continuum that can attract and repel objects.
Bob and Suzy are designing an electromagnet. Bob wants to add another battery to make the magnet stronger, and Suzy wants to add more coils to make the magnet stronger. Who is correct?
Bob
Suzy
Neither Bob nor Suzy
Both Bob and Suzy
Which item could NOT be used as a core in an electromagnet?
Wooden pencil
Steel bolt
Cobalt cylinder
Nickel pen
A proton (positive charge) and electron (negative charge) are attracted to one another. This is due to...
Gravitational fields
Electrical fields
Magnetic fields
Track and field
Which of the following materials will be attracted to a magnet?
Tin can, aluminum foil, and cobalt keys.
Nickel can, aluminum foil, and cobalt keys.
Nickel can, iron watch, and cobalt keys.
Iron watch, copper wire, and nickel can.
Which choice below shows a difference between gravitational fields, electrical fields, and magnetic fields?
Gravitational fields are invisible, electrical and magnetic fields are visible.
Gravitational fields can attract and repel, electrical and magnetic fields cannot.
Gravitational fields involve positive and negative charges, electrical and magnetic fields involve poles.
Gravitational fields can only attract, electrical and magnetic fields can both attract and repel.
The amount of matter in an object and the pull of gravity on that object are two different things called...
Velocity and volume
Mass and weight
Gravity and mass
Velocity and weight
The slowly churning liquid iron core of the Earth helps to explain why the Earth...
Has an electrical field
Has gravity
Has a magnetic field
Rotates on its axis
Which field deals with the attraction and repulsion of positive and negative charges?
Gravitational
Magnetic
Alkaline
Electrical
Which poles would attract and which would repel on a magnet?
North and south would attract, north and north would repel.
North and north would attract, north and south would repel.
South and north would attract, north and south would repel.
South and south would attract, north and north would repel.
