11F L073 Dangers of EM Waves

Which type of electromagnetic wave is used for remote controls?

• Radio waves

• Infrared

What type of electromagnetic wave is used for heating homes and cooking?

• Microwaves

• Infrared

What type of wave is used for terrestrial TV broadcasting?

• Radio waves

• Microwaves

What characteristic is associated with waves that are quite harmful?

• Long wavelength, low frequency

• Short wavelength, high frequency

What is a common use condition for dangerous waves?

• Used only under very controlled conditions

• Used freely without precautions

Where are X-rays and gamma rays commonly used?

• In cooking

• In medical procedures

Which type of ray is used for diagnosing disease?

• X-rays

• Gamma rays

How are radioactive compounds used in medicine?

• To inject radioisotopes for chemical transport tracking

• To replace blood

What is the effect of radiation on DNA?

• It strengthens DNA.

• It changes DNA, potentially leading to cell death.

What is a potential risk of exposure to gamma rays?

• Skin tanning

• Cell damage and increased cancer risk