Planet Magnet
Magnet Tech
Magnet Tech 2
Magnetism Basics
Miscellaneous Magnetism
100
The Earth's magnetic field causes a compass needle to do this.
What is point to north?
100
When a loop of wire moves in and out of a magnetic field, ___________ is produced.
electric current
100
_______________ are machines that convert mechanical energy (like moving air or water) to electrical energy.
generators
100
What happens when you cut a magnetic in half?
you get 2 smaller magnets
100
Magnetism in a piece of magnetized iron can be weakened using one of these two methods.
What is heat it up or hammering it?
200
The Earth's core is a giant moon-sized ball of....
iron and some nickel
200
When a magnet moves in and out of a coil of wire, ______________ is produced
electric current
200
__________________ converts electrical energy into mechanical energy. (fan, blender, hair dryer, etc)
electric motor
200
This powdery substance can be used to show invisible magnetic field lines
iron filings or iron powder
200
Iron has 26 protons in its nucleus. Where are these 26 protons squeezed together to create iron?
in the core of stars
300
The magnetic north and south poles are perfectly aligned with the geographic north and south poles.
True or False?
False.... They are separated by many miles
300
What is one way to make an electromagnet stronger?
1. more wire loops
2. stronger battery
3. bigger iron core
300
What is this?
portable AC generator
300
Who are the 3 brothers of magnetism?
iron, nickel, and cobalt
300
The Earth's magnetic field has flip flopped many times in the past with north pole switching with south pole. What evidence shows this ancient record?
new crust is always being formed at the bottom of the ocean and tiny iron crystals line up with the magnetic field at the time they are first cooled
400
Earth's magnetic field is strongest around the north and south poles. When particles from the sun interact with the field, it causes an interesting light phenomena in the sky called....
Aurora Borealis or Northern Lights
400
Which scientist discovered the Law of Induction (electricity is created by spinning magnets in a loop of wire?)
Michael Faraday
400
What is this?
simple electric motor
400
Who provided the mathematics used to describe electric and magnetic fields?
Maxwell
400
One of the biggest electromagnets in the world is a giant underground machine built underground in Europe used to smash particles together at high speeds. it is called the...
LHC or Large Hadron Collider
500
If you place a compass near a current-carrying wire, the needle will align to ____________________.
What is the magnetic field of the wire?
500
Which factor is expressed in volts?
The EMF (electromotive force) is in volts
500
This device is used to measure.....
strength of electric current
500
How will the following objects behave in a magnetic field?
a. glass
b. wood
c. plastic
they won't do anything, must contain iron to be affected by magnetism
500
A ____________ changes the voltage of AC current either higher or lower.
Transformer