Answer:look down...
Step-by-step explanation:
Quadrilateral:Four sides,four vertices.
Triangle:3 sides,3 vertices.
and a square is a type of quadrilateral whith all the sides having the same lengths.
Infrared
Radio waves
Ultraviolet
Visible light
Answer:Third option is correct.
Step-by-step explanation:
Certain high-frequency radiations are likely to cause harm to astronauts landing on Mars.
Ultraviolet is the most suitable to study this harmful radiation on Mars.
It has highest frequency than X-rays but shorter than visible rays.
It is harmful is nature as it causes painful sunburns and premature ageing of the skin etc.
Hence, Third option is correct.
Answer:
Given the options: Infrared, Radio waves, Ultraviolet and Visible light, ordering them by frequency (for highest to lowest) we get:
Ultraviolet
Visible light
Infrared
Radio waves
Knowing that high-frequency radiations are likely to cause harm to astronauts landing on Mars, then the detector of Ultraviolet is most suitable
Step-by-step explanation: