Why do astronauts have to wear protective suits when they are on the surface of moon?

Why is there no atmosphere on the surface of the moon ?

Can an astronaut listen to the sound produced by another astronaut on the surface of moon?

Why do the bodies of deep sea burst when they are brought to the surface of sea?

Will the time period of a spring change when vibrated with the same load on the surface of moon?

Answer the following : How do astronauts talk to each other on the suface of the moon?

(a) An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel. (b) Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?

Why there is practically no atmosphere near the surface of the moon?

Why does Moon have no atmosphere?

Why does moon have no atmosphere?