Vocabulary
What do we call a push or pull that acts between magnets or moving electric charges?
Magnetic Force
What type of magnetic force is demonstrated in the image?
Magnetic Attraction
What type of magnet is an electromagnet? WHY?
(Permanent magnet OR temporary magnet)
Temporary magnet because it is only magnetic when there is an electric current.
What year was the first hovercraft design created?
a)1950s
b)1960s
c)1970s
d)1980s
B) 1960s
The ability of a magnet to pull objects of the opposite pole towards it.
Magnetic attraction
What type of magnetic force is demonstrated in the image?
Magnetic Repulsion
What is the main difference between a permanent magnet and an electromagnet?
Electromagnets can have their magnetic field turned on and off.
Who invented the Flyboard and the Flyboard Air?
a) Thomas Edison
b) Leonardo da Vinci
c) Nikola Tesla
d) Franky Zapata
d) Franky Zapata
The area around a magnet where it attracts magnetic objects
Magnetic Field
A magnet always attracts objects that contain ______, like paperclips or nails.
Iron...
other materials include nickel, cobalt
An electromagnet is being used to hold a pile of paperclips. What would most likely happen if the electric current were turned off?
The electromagnet would lose its magnetism and release the paperclips.
What is the key difference between the Flyboard and the Flyboard Air?
a) The Flyboard Air uses air instead of water for "levitation".
b) The Flyboard Air is controlled by a joystick.
c) The Flyboard Air is attached to a larger watercraft.
d) The Flyboard Air is designed for underwater use.
a) The Flyboard Air uses air instead of water for "levitation".
A type of magnet in which the magnetic field is produced by an electric current?
Electromagnet
What is the relationship between an object's distance from a magnet and the strength of its attractive force?
The magnetic force becomes weaker as the distance of the object gets further away.
Adrian is planning an investigation to show there is a magnetic field around a bar magnet. What would provide the best evidence that this is true?
a) The magnet sticks to many different objects on their desk.
b) The magnet pulls paper clips across the table without touching them.
c) The magnet neither attracts nor repels another bar magnet.
d) The magnet shape is rectangular.
b) The magnet pulls paper clips across the table without touching them.
What is the function of the magnetic field in the Lexus hoverboard?
a) To store energy for the hoverboard
b) To generate heat for the hoverboard
c) To hover above a specially-made track
d) To land on a specially-made track
c) To hover above a specially-made track
What is the difference between a permanent magnet and a temporary magnet?
A permanent magnet is an object that stays magnetic on its own for a long time.
A temporary magnet only becomes magnetic when an electric current flows
You bring a magnet's north pole near an object and it attracts. Then, you bring the magnet's south pole near the same object, and it also attracts.
What can you conclude about the object?
The object is made of a magnetic material, but is not a magnet.
A student made an electromagnet and recorded the number of paper clips it could pick up. The student’s results are in the image.
What causes the strength of an electromagnet to increase?
Increasing the number of coils increases the strength of an electromagnet
What special material works at extremely cold temperatures in the Lexus hoverboard that makes it levitate?
Superconductors