emergency light rays

Question 1

Harmful effects ofinfrared radiation(heat one)

Answer 1

Harmful:
- released during welding and cutting from furnaces and molten metal production, workers must pretect themselves(by wearing googles to protect eyes)
- Excessive infrared radiation contributes to climate change, increase in temperature on earth(changes in weather patterns, hamring living things)

Question 2

applications of infrared radiation(heat one)

Answer 2

Applications:

• Thermal imaging cameras to scan people for fever
• burglar alarms to detect movement if objects in complete darkness(body has heat)
• remote controls to send signals to things like television(electrical circuit)

Question 3

Harmful effects ultraviolet radiation

Answer 3

Harmful

• exposure to UV radiation can harm our eyes and cause skin cancer (can protect by putting sunscreen or sunblock when outdoors)

Question 4

applications of ultraviolet radiation

Answer 4

Applications

• small amount of UV increases vitamin D in our body
• treat babies with jaundice
• disinfect medical equiment, food and water(environmental friendlt cause no harmful method is used.

Question 5

Harmful effects of visible light

Answer 5

Harmful:

• light pollution( we cannot migrate, reproduce, search for food, sleep and escape form predators)
• Exposure to liht source cause damage to books and documents, causging ink and colour to fade, paper and binding materials deteriorate(so flash photography not allowed in some musuems

Question 6

applications of visible light

Answer 6

Applications

• Plants use the light energy from visible light to make sugar using carbin dioxide and water through photosynthesis
• allow us to carry out our daily activities.