Vocab
Surrounds a magnet and exerts a magnetic force on other magnets
What is magnetic field?
How many poles does each magnet have?
What is two?
What usually makes up an electromagnets core?
What is iron?
How is electric current measured?
What is amps?
Electric current that flows only in one direction
What is a direct current?
Group of atoms whose fields point in the same direction
What is magnetic domain?
What are the two poles of a magnet called?
What is north and south?
What are some examples of electromagnets?
What are doorbells, gauges, motors, generators, etc.?
To measure the current in a circuit, what type of device is used?
What is an ammeter?
Light display that occurs when charged particles trapped in the magnetosphere collide with Earth’s atmosphere above the poles
What is an Aurora?
Regions of space affected by Earth’s magnetic field
What is the magnetosphere?
What do the field lines of a magnet look like if two magnets are repelling each other?
What is an electromagnet?
What is a current carrying wire wrapped around an iron core?
What is true?
Electrical current that changes its direction repeatedly
What is an alternating current?
Device that transforms electrical energy into kinetic energy
What are motors?
What will the field lines of a north and south facing magnet look like?
What is curved lines?
How can the strength of an electromagnet increase?
What is using a larger core, increasing the current, or increasing the number of coils?
If the electromagnet in a device is off, is there an electric current running through the same device?
What is no current will be occurring?
What is the average amount of voltage that runs through power lines from a power plant?
Around 700,000 Volts
Device used to increase or decrease the voltage of an alternating current
What is a transformer?
A magnet can only work when their is a magnetic field. What causes a magnetic field to occur?
True or False: A magnet will be repelled by a superconductor?
What is true?
If the coils in a transformer are different on either side, with the input voltage having 6 coils and the output voltage having 3, what will the output voltage be in comparison to the input voltage?
What is the output voltage will be smaller?
True or False: a magnetic field doesn't surround magnets when they are not touching/connecting to another magnetic object?
What is false; magnets still have a magnetic field around them when they are not touching/ connecting to another magnetic object