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(Savvas 18.1) Ch. 18.1 Electromagnetic Waves

Authored by Christopher Powers

Physics

8th Grade

(Savvas 18.1) Ch. 18.1 Electromagnetic Waves
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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Electromagnetic waves can travel through a vacuum. (True/False)

True

False

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which wave fits the particle model?

Electromagnetic

Mechanical

Both

None

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Electromagnetic waves are produced when a(n) _______ vibrates or accelerates.

Electron

Proton

Neutron

Atom

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Magnetic fields are produced by magnets, by changing _______, and by vibrating charges.

A) Electric fields

B) Magnetic poles

C) Electric currents

D) Light waves

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Electromagnetic waves are produced when an electric charge _______.

Stays still

Vibrates

Disappears

Changes color

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when electric and magnetic fields change?

They disappear

They regenerate each other

They become weaker

They stop moving

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is the following sentence true or false? All electromagnetic waves travel at the same speed through a vacuum.

True

False

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