Topic 2

Question 1

What is the visible light order?

Answer 1

Red (longest wavelength, lowest frequency)
Orange
Yellow
Green
Blue
Indigo
Violet (shortest wavelength, highest frequency)

Question 2

What is the order of the wavelengths within the spectrums group names?

Answer 2

(In order) 
Gamma rays 
X-Rays
Ultra-violet rays (UV) 
Infrared 
Microwaves
Radio waves

Question 3

What dangers does infrared radiation have?

Answer 3

Too much IR can damage or destroy cells, which can burn the skin.

Question 4

What dangers do UV radiation have?

Answer 4

• Sunlight contains UV, which carries more energy than visible light.
• The energy transferred by UV to our cells can damage their DNA.
• Too much exposure to sunlight, can cause skin cancer.
• Can damage our eyes.