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WorksheetsMagnetism
Total questions: 20
Worksheet time: 14mins
In what layer of Earth is the magnetic field generated?
Inner Core
Outer Core
Magnetosphere
Biosphere
The outer core is in which state of matter?
Solid
Liquid
Gas
The magnetic field is created in the Earth's core. It streams out near the __ pole, loops around the planet, and then runs back into the core near the __ magnetic pole.
North, South
South, North
The sun has gravity as well as a magnetic field.
True
False
Believe it or not, what you just saw happens every few hours. Sometimes it is strong, sometimes it is weaker. What is the sun ejecting in a coronal mass ejection (CME)?
Nuclear Reaction
Charged Particles
Fire Bombs
The magnetic field protects us from __ from space
interstellar debris such as asteroids and crashing satellites
comets
solar wind and radiation
From what scientists learn about Earth's magnetic field, they can also learn about ____, _____ and _____. (choose 3)
International space station
Other stars
Our Sun
Black holes
Clay contains tiny particles of a mineral called ___.
Iron
lodestone
magnetite
In the last 300 years, the magnetic field has decreased by 10%.
True
False
The liquid metal in Earth's core is constantly moving.
True
False
It's really __ currents inside the Earth's __ that give Earth its magnetic field.
electric, mantle
radio, core
electric, core
On average, magnetic reversals happen once every __ years.
2 million
200
200,000
The area of magnetic force around a magnet is known as its _____________.
magnetic field
magnetic declination
magnetic fan lines
magnetic tan lines
Looking at the field lines in this picture, these two magnets are ________
Attracting
Repelling
Attracting and Repelling
Doing nothing
