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X-Rays and Gamma Rays in Medicine Quiz

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Questions and Answers

What is the main risk associated with certain frequencies of microwaves?

Risk of internal heating due to water absorption (correct)

Causing mutations in cells

Ionizing atoms in the body

Damage to skin cells

Why are microwaves used in everyday circumstances considered safe for humans?

They are known to cause mutations in cells

They do not have any effect on human cells

They emit very small amounts of energy (correct)

They contain harmful levels of energy

How do microwave ovens prevent the large amounts of energy they emit from escaping?

By absorbing the energy into the food being cooked

By using metal walls and a metal grid in the glass door (correct)

By releasing excess energy into the atmosphere

By converting the energy into harmless waves

Which statement best describes the dangers associated with electromagnetic waves?

Cause direct damage to DNA in cells Signup and view all the answers

What is the main reason for the risk of internal heating from microwaves?

Absorption by water molecules in the body Signup and view all the answers

What happens to the energy of electromagnetic waves as their frequency increases?

Becomes large enough to ionise atoms Signup and view all the answers

Which type of radiation becomes more dangerous as the wavelength gets shorter?

Gamma rays Signup and view all the answers

What effect can gamma rays have on human cells?

Kill them Signup and view all the answers

Which statement is true regarding the risks associated with microwaves?

Microwaves can cause cancer with prolonged exposure Signup and view all the answers

How do ultraviolet, X-rays, and gamma rays affect human body tissue?

Have hazardous effects through ionisation Signup and view all the answers

Which electromagnetic waves have no known harmful effects according to the text?

Radio waves Signup and view all the answers

What is a characteristic of ultraviolet light?

It can cause severe eye damage if exposure is high Signup and view all the answers

How do good quality sunglasses protect the eyes from ultraviolet light?

By absorbing the ultraviolet light Signup and view all the answers

Which type of electromagnetic waves can penetrate the body and cause internal damage?

X-rays and gamma rays Signup and view all the answers

What is a risk associated with exposure to X-rays and gamma rays?

Cell mutation and cancer Signup and view all the answers

How are medical professionals protected from unnecessary exposure to X-rays?

They wear radiation badges to monitor exposure Signup and view all the answers

What are some precautions taken by individuals working with gamma rays?

Routine testing of radiation dose levels Signup and view all the answers