Magnets
Like poles __________ and opposite poles ________.
repel, attract
What phenomenon is caused by the interaction of the Earth's magnetic field with solar wind?
Auroras
What produces an electric field?
Electric charges passing through a wire.
What charge does an object have if it gains extra electrons?
Negative
A circuit with no breaks that allows electricity to flow is called a...
Closed circuit
Where is the magnetic force strongest on a magnet?
At the poles
What is the Earth's magnetic field?
The magnetic field that extends from the Earth's interior out into space.
What is a visible effect of Earth's electric field during storms?
Lightning
What is electricity?
A form of energy resulting from the flow of electric charge.
A ____ circuit only has 1 path for electricity to flow.
Series
What kind of magnet can be turned on and off?
An electromagnet.
The Earth's magnetic field helps guide the charged particles toward the _______ ______.
Earth's poles
What type of particles are moved by the Earth's electric field?
Charged particles
Electricity flows from the _________ end of the battery to the _______ end.
negative, positive
What happens in an open circuit?
Electricity cannot flow
What materials are commonly used to make magnets? Name 1.
Iron, Nickel, Cobalt,
What role does the Earth's magnetic field play?
It protects the Earth from solar wind and radiation.
What causes the Earth's electric field?
Differences in electric charges in the atmosphere.
What can you do to make an electromagnet stronger?
Wrap more coils around the magnet.
Negative
How can you demagnetize a magnet? Give 2 ways.
Dropping it, Heating it, Placing it in a strong magnetic field
How does the Earth's magnetic field affect compass needles?
Compass needles align with the Earth's magnetic field, pointing toward the magnetic south or geographic north.
What happens to the electric field around a balloon when you rub it on your hair?
The electric field attracts your hair.
Electricity is often described as the flow of electrons. Explain how the structure of an atom makes this possible, and why some materials conduct electricity better than others.
Electrons are on the orbitals of atoms. This allows the electrons to be shared or traded. Some materials can transfer these electrons easier.
In a series circuit, what happens if one bulb goes out?
All of them stop working.