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101 EM Waves Revision

Authored by D Teng

Physics

10th Grade

Used 5+ times

101 EM Waves Revision
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35 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the dangers of radio waves?

No known dangers
Ionising cells and causing cancer
Skin burns
Cause global warming
Loss of hearing

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an example of protection against radio waves

No protection needed
Gloves
Plastic, clear goggles
Lead lined suit to stop ionisation
Outside a 15m radius

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a use of radio waves

Communication (radio and to)
Nuclear fission
Sterilisation and medicine
Charging electronic devices
Nuclear fusion

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Radio waves are easily transmitted through…

Air
Glass
Water
Magnesium
Nitrogen

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How long are radio waves wavelengths, when transmitting signals

A few m
A few μm
A few mm
A few km

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a danger of microwaves?

Heat damage
Cell mutations
greenhouse gases
No dangers

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What a microwaves used for?

Heating food
Watching TV
Listen to music
Medical uses

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