Electromagnetism

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Physics

•

7th Grade

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Medium

L Blake

Used 41+ times

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20 Slides • 14 Questions

Electromagnetism

Fill in the Blanks

Type answer...

Multiple Choice

What causes a current to flow.

a battery

a cell

a potential difference.

resistance

Multiple Choice

What is the atomic number of this atom?

Multiple Choice

What is the mass number defined as?

the number of protons

the number of protons and neutrons

the number of neutrons

the number of protons and electrons

Multiple Choice

What is the atomic number?

the number of protons

the number of protons and neutrons

the number of neutrons

the number of protons and electrons

Multiple Choice

As electrons move, they make

A. electromagnetism.

B. auroras.

C. ferromagnetism.

D. magnetic fields.

Multiple Choice

What is a solenoid?

A coil of wire with current flowing through it

A type of bar magnet

A single straight wire

One loop of a wire

Multiple Choice

What is the shape of a magnetic field around a wire?

Multiple Choice

What is the shape of a magnetic field around a bar magnet?

Multiple Choice

What is the shape of a magnetic field around the Earth?

Multiple Choice

what is the earths magnetic field useful for

deflecting the solar wind, charged particles that come from the Sun.

wind

sun

light

Multiple Choice

What does the following represent?
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙

A crowd with binoculars

A bunch of coaxial cables

Uniform magnetic field directed into the screen away from you

Uniform magnetic field directed out of your screen at you

Multiple Choice

A magnet must always have two poles, even if cut in half, because

A magnet is made up of tiny magnetic domains that are aligned.

Each pole divides in half and the magnetic field becomes weaker.

Magnetic domains are out of alignment.

Multiple Choice

Permanent magnets have a weaker magnetic field if

All of its magnetic domains are aligned

Some of its magnetic domains are not aligned.

Its magnetic domains are aligned in opposite directions

It has magnetic electrons in its atoms.

Electromagnetism

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