effect of EM waves in nuclei and living organisms

What happens to electrons when an atom absorbs EM radiation

Electrons at a particular energy level jump to higher levels (at larger distances from the nucleus)

When electrons in an atom move to a lower energy level

The atom emits energy, releasing it as a specific frequency of EM radiation

Origin of gamma rays

Gamma rays originate from changes in the nucleus of an atom

EM radiation that has hazardous effects on human body tissue

Ultraviolet light, X-rays and gamma rays

Radiation dose

A measure of the risk of harm resulting from an exposure of the body to the radiation

Sievert (Sv)

The SI unit for radiation dose

Millisievert (mSv)

A more commonly used unit for radiation dose, as absorption is usually less than 1 Sv

1 sievert (Sv) is equal to \_____ millisieverts (mSv)

1,000 millisieverts (mSv)

Dangers of ultraviolet light

Can cause skin to age prematurely and increase the risk of skin cancer

Dangers of X-rays and gamma rays

Can cause the mutation of genes which can lead to cancer

Dangers of microwaves

Can cause internal heating of body tissues

Dangers of infrared radiation

Felt as heat and causes skin to burn