Electricity
The invisible region around a charged object where an electric force is applied is called an ___________________.
electric field
What are the three common types of metal that can become a magnet?
Iron, cobalt, and nickel
Earth's two sets of poles are called _____________ and ______________.
magnetic and geographic
An ______________ is a temporary magnet that is created when wire is wrapped around an iron core and attached to a battery to allow current to flow through it.
electromagnet
Which Greek leader was responsible for the development of direct democracy?
Pericles
The movement of electrically charged particles is called __________________.
electric current
What word describes when a metal has the ability to become a magnet because of its magnetic properties?
Ferromagnetic
Earth's axis is the same as the line that defines Earth's _____________ poles.
geographic
How can you increase the strength of an electromagnet?
Increase the amount of coils/increase the current
Which expression is equivalent to 75x-25x? Choose all that apply.
a. 50
b. 100
c. 50x
d. x(75-25)
e. x(75-25x)
Name the three parts of the atom and the charges for each part as well. (ex. ______ has a ______ charge)
Proton = positive, neutron = neutral, electron = negative
What happens when you break/cut a magnet into two smaller magnets?
New north and south poles are created which allows the new magnets to attract to one another.
Which layers of Earth do scientists believe are responsible for Earth's magnetosphere?
Inner and outer cores
When electric current flows through a wire, a _____________________ is created outside of the wire.
magnetic field
Which two teams will play in the Super Bowl this Sunday?
Cincinnati Bengals and Los Angeles Rams
When an object has equal amounts of positive and negative charge, it is called __________________. If an object has an UNBALANCED amount of positive or negative charge, it is called _______________.
electrically neutral; electrically charged
How can permanent magnets be created?
By leaving a ferromagnetic object in the magnetic field of a powerful magnet
What is unique about the magnetic and geographic poles of Earth? (HINT: think about location!)
Earth's magnetic south pole is its geographic north pole and vise versa
What can scientists use to study the history of Earth's magnetic pole reversals?
Patterns on the ocean floor created by lava over the years.
If a bowling ball and a tennis ball are dropped from the same height, which object would have the greater amount of kinetic energy? Why?
Briefly describe the difference between a conductor and an insulator.
Conductors allow electrons to flow easily through the material and insulators do NOT allow electrons to flow easily.
What do the North and South poles of a magnet have in common with positively and negatively charged electric particles?
Both poles and particles attract one another and generate fields around the objects
Where on Earth do people see the auroras and why do people see them only at these locations?
The poles of Earth because the magnetic field is strongest at the poles and the electric particles from the Sun are pulled towards the poles along Earth's magnetic field
What is the angle created by the space between the magnetic and geographic poles of Earth referred to as?
Magnetic declination
Name 3 of the 5 methods of indirect character development.
Physical, actions, inner thoughts, reactions, speech