Sunlight, Sun Tans, and Sunscreens Quiz

Which type of UV rays have the shortest wavelength?

• UVC rays

• UVB rays

• Visible light

• UVA rays

What is the main function of UVC rays?

• Enhance skin aging

• Absorbed by the atmosphere

• Promote skin cancer

• Cause skin burns

Which layer of the skin do UVB rays penetrate beyond?

• Epidermis

• Dermis

• Hypodermis

• Subcutaneous tissue

What is the main function of melanin in the skin?

• Enhance skin aging

• Promote skin cancer

• Protect DNA from mutating

• Cause skin burns

What is the main purpose of SPF in sunscreens?

• Block UVA rays

• Block UVB rays

• Enhance skin aging

• Promote skin cancer

What does SPF stand for in sunscreens?

• Skin Protection Factor

• Sunburn Prevention Formula

• Skin Pigment Filter

• Sun Protection Factor

Which type of rays can lead to skin cancer in tanning beds?

• UVA rays

• UVC rays

• UVB rays

• Visible light

What is the main ingredient in sunless tanners?

• Collagen fibers

• Melanin

• DHA

• Keratinocytes

What is the recommended frequency for reapplying sunscreen?

• Every 30 minutes

• Every hour

• Every 2 hours

• Every 4 hours

Which type of rays do sunless tanners protect the skin from?

• UVC rays

• UVA rays

• UVB rays

• Visible light