Electricity Part 3

Substances that speed up chemical reactions are called:

• inhibitors
• reactants
• accelerators
• catalysts

Give one example of a catalyst used in the beauty industry:

Visible light makes up what percent of sunlight?

Invisible light makes up what percent of sunlight?

What rays are long and produce heat?

• Ultraviolet rays
• X-rays
• Gamma rays
• Infrared rays

What invisible rays can burn you, age you, and cause skin cancer?

• Infrared rays
• X-rays
• Ultraviolet (UV) rays
• Microwaves

Match the following

• red

• The light that increases circulation and helps with wound healing

• yellow

• The light that reduces hyperpigmentation and redness

• green

• The light that reduces swelling and inflammation

• blue

• The light that reduces acne and bacteria