Mystery
Who has the most YouTube subscribers?
Who is MrBeast?
A material that attracts iron and materials that contain iron
What is a magnet?
Scientist Oersted accidentally discovered that an ________ __________ produces a magnetic field?. (Hint: page 135)
What is an electric current?
The area of magnetic force around a magnet is known as its ___________ ______.
What is a magnetic field?
A _____________ is a device that measures small currents. An electric current turns the point of it.
What is a galvanometer?
What is the most popular sport in the world?
What is soccer?
The attraction or repulsion of magnetic materials
What is magnetism?
The magnetic field produced by a current has a strength and a _________. This field can be turned on or off, have its direction reversed, or have its strength changed. (Hint: page 137)
What is direction?
__________ _______ ______ are lines that map out the invisible magnetic field around a magnet.
What are magnetic field lines?
An _________ _______ is a device that uses an electric current to turn an axle. It transforms electrical energy into mechanical energy.
What is an electric motor?
What is the most popular ice cream flavor in the world?
What is vanilla ice cream?
Any magnet, no matter what its size or shape, has two ends. Each end is called...
What is a magnetic pole?
Both solenoids and electromagnets use electric current and ________ ______ to produce strong magnetic fields. (Hint: page 138)
What are coiled wires?
A _________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.
What is a compass?
Generating electric current from the motion of a conductor through a magnetic field is called ____________ ________. (Hint: page 147)
What is electromagnetic induction?
What is the strongest magnet in the universe?
What is a Magnetar (a type of neutron star)?
The attraction or repulsion between magnetic poles is __________ _______. This is produced when magnetic poles come near each other and interact.
What is magnetic force?
A coil of wire with a current is called a _________.
(Hint: page 138)
What is a solenoid?
The _________ __________ of a location changes. Earth's magnetic poles do not stay in one place as the geographic poles do. (Hint: page 133)
What is magnetic declination?
A current with charges that flow in one direction is called ________ _______. A battery produces this when a battery is placed in a circuit, and into the other end of the battery.
What is direct current?
Which planet in our solar system has the greatest number of moons?
What is Jupiter?
It has 95 moons!
Magnets attract ______ and materials that contain iron. Magnets attract or repel other magnets.
What is iron?
A solenoid with a ferromagnetic core is called an ___________.
What is an electromagnet?
Just like a bar magnet does, Earth has a magnetic field around it and two _________ _____.
What are magnetic poles?
A constantly reversing current is called __________ ____________. You can induce this by moving either the coil or the magnet up and down repeatedly in the circuit.
What is alternating current?