Health Science UV Radiation

The sun produces light and warmth, but also harmful (a)   radiation.

Which term best describes ultraviolet radiation?

• harmless
• invisible
• undetectable
• beneficial

_____ exposure to UV rays often leads to skin cancer.

• Nocturnal
• Indirect
• Brief
• Prolonged

What is the difference between SPF 10 and SPF 45 sunscreen?

• 45 absorbs UV radiation; 10 reflects it
• 45 blocks UV and visible light rays; 10 only blocks UV rays
• 45 blocks UVA and UVB rays; 10 doesn't
• 45 protects you for a longer time than 10

What does NOT keep your skin healthy?

• Tanning

• Healthy diet

• Keeping skin mouisturised

• Limit sun exposure

To protect yourself fully from the damaging effects of the sun you should choose sunglasses and sun cream which...

• Protect against UVA radiation

• Protect against UVB radiation

• Protect against both UVA and UVB radiation

Which kind of UV radiation almost entirely reaches the Earth’s surface

• UVC

• UVB

• UVA

What is crucial for sun's angle on Earth?

• latitude

• longitude

• altitude

How altitude change UV radiation?

• increase

• decrease

Which of following countries has the highest rate of skin cancers cases per capita?

• Egypt

• New Zealand

• Japan

• Kenya