ET unit 11 -- magnetism

Which of the following things is not possible?

• a liquid magnet

• a broken magnet with with north and south poles

• a magnetic field

• opposite polarity in a magnet

Tags

NGSS.MS-PS2-5

Magnetism is the property of a material or object to attract other objects made out of _______

• copper, steel, or zinc

• other magnets

• iron, magnetite, or steel

• iron, wood, or plastic

Magnetic objects are generally grouped into which 2 categories?

• Ferromagnetic and paramagnetic

• magnetic forces and magnetic fields

• permanent magnets and objects that can become magnetized

• north poles and south poles

What materials allow a magnetic field to pass through them?

• paper

• glass

• steel

• all answers are correct

What can destroy a magnet?

• breaking it in half

• Heat

• Extreme cold temperatures

• Electricity

Tags

NGSS.MS-PS2-3

What is the fundamental difference between magnetic poles and electric charges?

• magnets are are always opposite

• charges can be separated, but poles cannot

• electric charges are always the same

• they are always attracted to each other

Tags

NGSS.MS-PS2-3

Condition of a system that describes opposing physical characteristics.

• equilibrium

• asymmetry

• polarity

• magnetism

A region of material comprised of many atoms with their individual magnetic fields aligned.

• electromagnetic fields

• chemical bonds

• magnetic poles

• magnetic domains

Tags

NGSS.MS-PS2-5

A force that causes an object to twist or rotate.

• Torque

• Pressure

• Friction

• Momentum

What is the speed of a gravitational field?

• The speed of sound

• The speed of light

• The rotational speed of Earth

• Molecular speed