questionnaire (1)

Apr. 19, 2009

Think

1.In your opinion,electromagnetic radiation generally refers to the electromagnetic wave of which the frequency is above( ).

50 kHz

16%

100 kHz

50%

150 kHz

16%

200 kHz

16%

Total Votes: 6

Apr. 19, 2009

2.Among the following ,which do you think belongs to the electromagnetic wave?( ).

Infrared radiation

0%

γ-ray,x-ray

0%

Visible light

0%

Radio waves

0%

Ultraviolet radiation

0%

Cosmic ray photon

0%

All

100%

Total Votes: 6

Apr. 19, 2009

3.In terms of environmental protection,electromagnetic radiation includes( ).

Radiation, Induction

16%

Radiation,Conduction

0%

Induction,Conduction

0%

Radiation, Induction,Conductio

83%

Total Votes: 6

Apr. 19, 2009

4“There are two ways of producing electromagnetic field: spontaneous generation and artificial methods.” Is it true or false?

Apr. 19, 2009

5. “Whenever you are using electronical appliances, electromagnetic wave is emitted.” Is it true or false?

Apr. 19, 2009

6.”We are living in a space full of electromagnetic radiation.”Is it true or false?

Apr. 19, 2009

7.The hazards to human body caused by electromagnetic radiation can be classified as( ).

Thermal effects

0%

Non-thermal effects

0%

Accumulative effecteffect

0%

All

100%

Total Votes: 6

Apr. 19, 2009

8.Do you think it is necessary for the environmental agency to publicize the knowledge about electromagnetic radiation?

Yes ,it is necessary.

100%

No,it is unnecessary.

0%

Total Votes: 6

Apr. 19, 2009

9.After using your mobile phone or computer for a long time, have you ever got any abnormal symptom(such as dizziness, brain expansion)?