Vocabulary
The ends of a magnet are called __________
Poles
True or false. Magnets attract objects made of glass.
False
Which would be attracted to a magnet? A plastic button, a wooden toothpick, a rubber band, or a paper clip?
A paper clip
Electricity is the flow of ______.
Electrons.
What are the 3 simplest items to create an electromagnet from?
Power source (battery), wire, metal core (nail)
An object with a force that can attract or repel certain materials is called a ________
Magnet
True or false. Magnets attract materials made of rubber.
False
Which pair of magnetic poles attracts one another?
Opposites!! One north, one south
___________ are gained or lost to produce an electrical charge.
Electron
Electricity produces a _______.
magnetic field
A closed path around which electricity can flow
circuit
True or False. Magnets attract objects made of plastic.
False.
The planets orbiting the sun are an example of ______________ forces.
gravitational
Jeremy moves a magnet inside a copper wire coil. What does he generate?
Electric current
Based on previous evidence in class, which of the following electromagnets will pick up the most paperclips?
A. Electromagnet with 30 coils
B. Electromagnet with 50 coils
C. Electromagnet with 80 coils
C. Electromagnet with 80 coils
Increasing the amount of coils will increase the strength of the electromagnet.
A region of magnetic force around a magnet is a ______.
Magnetic field
True or false. Magnets attract materials made of metal.
True.
When a north pole and north pole of two magnets are near each other they will ________.
Repel
Electric charges that do not move through a current are known as _________.
static electricity
Which of the following are examples of electromagnets? (Select Multiple)
Hard Drives
Speakers
Electric Motors
Refrigerator Magnet
1, 2, 3
A magnet created from the flow of electricity.
Electromagnet
What material does a magnet attract?
Iron, nickel, cobalt
How does the distance that an object is from a magnet affect the magnetic force on the object?
The farther away, the less magnetic force.
Electromagnetic Induction
Name at least two different factors that can affect the strength of an electromagnet.
Amount of current, voltage, size of wire, material wire is made from, etc.