TED-Ed: Which sunscreen should you choose? - Mary Poffenroth

The video tutorial explains the different types of sunscreens and their effects on both the human body and the environment. It covers how UV radiation affects the skin and the role of sunscreens in protection. The tutorial also discusses the importance of SPF, the differences between physical and chemical sunscreens, and the environmental impact of certain sunscreen ingredients on marine life, particularly coral reefs. Viewers are guided on how to choose the right sunscreen for their needs while considering health and environmental factors.

What is the primary role of sunscreen in protecting the skin?

• To increase melanin production

• To moisturize the skin

• To deflect or absorb UV rays

• To enhance the production of vitamin D

Which SPF level is recommended for better protection against UVB rays?

• SPF 30

• SPF 10

• SPF 15

• SPF 50

Why might someone choose a mineral-based sunscreen over a chemical one?

• They are less likely to irritate the skin

• Mineral-based sunscreens are more water-resistant

• They are cheaper

• They provide a higher SPF

What is a significant environmental concern associated with chemical sunscreens?

• They increase water pollution

• They cause ocean acidification

• They contribute to coral bleaching

• They attract marine predators

Which ingredient in chemical sunscreens is known to harm coral reefs?

• Zinc oxide

• Titanium dioxide

• Oxybenzone

• Aloe vera