Can two astronauts talk on the surface of moon as they do on earth?Why?

Two astronauts on the surface of the moon cannot talk to each other why?

A: Evaporation of water is fast on the surface of moon as compared to earth. R: On the surface of moon temperature is much greater than the surface of earth.

A: Evaporation of water is fast on the surface of moon as compared to earth. R: On the surface of moon temperature is much greater than the surface of earth.

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

Why one can jump higher on the surface of moon than on the earth?

Calculate the weight of an astronaut whose mass is 80 kg on the surface of earth and on the surface of moon. Given that the acceleration due to gravity at moon is one-sixth of that of earth.