Magnetic Field
What are the two types of charge?
North and south
What does the magnetic field protect us from?
The Sun
Where does the word magnet originate from?
Magnesia, Greece
If the velocity is to the right and the field is down, then what direction is the force if the particle is positive?
Out of the page
Who is often credited with inventing the lightbulb?
Thomas Edison
Which way is magnetic north?
Down, south
What color is oxygen and what color is hydrogen?
Oxygen is green, Hydrogen is purple
How often do the poles flip?
Every 1,000-100,000 years
If the velocity is to the left and the force is out of the page, which direction is the field if the particle is positive?
Down
What chemical did Frank Huaksbee use to make barometric light?
Mercury
What materials are ferromagnetic?
Iron and nickel
As the sun rotates, it's magnetic field can get twisted and cool. What are these cooled spots called?
Sun spots
Is magnetic force fundamental?
It depends, it won't appear for all observers
If the field is up and the force is to the right, what direction is the velocity if the particle is positive?
Into the page
In what year did Thomas Edison light up part of NYC with DC current?
1882
What type of magnetism effects paperclips?
Paramagentic
After the Carrington Event, when did the next solar maximum happen?
July 2025
What does the seafloor retain as it spreads?
Magnetic field direction
If the velocity is to the right and the field is up, what direction is the force if the particle is positive?
Out of the page
What was a common set back about Humphrey Davy's lamp?
It didn't last very long
Who first observed magnetism?
Hans Christian Oersted
Why doesn't Mars have a strong magnetic field anymore?
The absence of water
What did navigators use before a compass?
The stars and sun
If the velocity is out of the page and field is down, what direction is the force if the particle is negative?
Left
What did Tesla coils do?
Nothing - they were just for show.