____________________ are electromagnetic waves

Question

Wave/Image
with wavelengths _______________ than those of visible light
O They have _______________ frequencies than visible light
so they have more _______________
O
Have enough energy to _______________ or _______________ living cells
O
Ultraviolet lamps are used to _______________ bacteria on
_______________ equipment
O Small doses of ____________________ are useful in that they cause skin to
produce ____________________, which is needed for healthy bones and
teeth
O _______________ doses of ultraviolet rays can be harmful.
O Can burn your skin, which causes _______________ and
_______________ to your eyes
O
By applying _______________ and wearing _______________ you can
_______________ the damage caused by ____________________

Answer 1

Ultraviolet (UV) rays are electromagnetic waves with wavelengths shorter than those of visible light. They have higher frequencies than visible light, so they have more energy.

Ultraviolet rays have enough energy to damage or kill living cells. Ultraviolet lamps are used to sterilize bacteria on medical equipment. Small doses of ultraviolet radiation are useful in that they cause skin to produce vitamin D, which is needed for healthy bones and teeth. However, excessive doses of ultraviolet rays can be harmful.

Exposure to high levels of UV rays can burn your skin, which causes painful sunburn and can lead to damage to your eyes. By applying sunscreen and wearing protective clothing, you can reduce the damage caused by ultraviolet radiation.