Magnetism
Electromagnets
Magnetic Fields
Magnetism Pt 2
Charges
100
The poles of a magnet include
North and South
100
Magnetism is a type of _____________.
Force
100
What causes Earth’s magnetic field?
Flow of liquid iron in the outer core
100
What happens if you hold the north pole to the south pole of a different magnet?
They will attract each other
100
Three point charges (X: -, Y: +, Z: +) are configured in a straight line. Which statement explains the forces exerted on Y?
X exerts a force on Y to the left; Z exerts a force on Y to the left.
200
Like poles (north/north or south/south) of a magnet _______ each other.
Repel
200
What is an electric force?
Attractive or repulsive interactions between any two charged objects
200
Magnetic fields always travel ________ to ________?
North to South
200
What happens if you hold the north poles of two different magnets close to each other?
They will repel each other
200
Charged pith balls are suspended by strings. If Ball W has a positive (+) charge, what are the charges on Ball 1 and Ball 2?
Ball 1 is positive and Ball 2 is positive.
300
Opposite poles (north/south) of a magnet ________ each other.
Attract
300
What affects the strength of an electrical field?
Both the quantity of the charge and the distance from the source
300
Where is the magnetic field strongest on this magnet?
Point A
300
This surrounds a magnet and exerts a force on other magnets?
Magnetic force
300
Sphere 1 is given a net positive charge, while Sphere 2 is given a net negative charge. Which statement explains the movement of charges during the charging process?
Electrons were removed from Sphere 1; electrons were added to Sphere 2.
400
To force an object away or to keep it away (related term: repulsion)
Repel
400
As the distance between the magnets increases, the attraction between them will?
Decrease
400
The area around charged particles that exert a force on other charged particles is the __________ field.
Electric
400
Is the following image magnetized or not magnetized?
Magnetized
400
A negative charge (-) is projected with velocity v through two oppositely charged plates. Which line best represents its path?
Line C
500
The attractive or repulsive force exerted between the poles of a magnet and moving charged particles?
Magnetic force
500
How can the strength of an electromagnet increase?
Add more loops (coils) of wire around the core
500
What is being shown in the image below?
Magnetic field lines
500
Why does magnet A appear to float above magnet B?
Like poles repel each other
500
When a balloon is rubbed on wool, what happens scientifically?
Electrons (negative particles) transfer from the wool to the balloon