What do you know about water in space?

Water is a compound of hydrogen with:

nitrogen

oxygen

carbon

What is the most common chemical element of oxygen in the universe?

first

third

fifth

The composition of comets includes water in the form of:

liquid

crystalline ice

amorphous ice

Does water exist outside the solar system?

Yes

No

No, but it will definitely be found in the future

How many phases of crystal ice exist?

1

8

19

Why is liquid water considered a good sign of life?

it forms the walls of biological cells

it is a universal solvent in which biological reactions occur

it is the source of energy for all biological life

What is an "ice line"?

a line on the Moon behind which ice can form

a conditional line indicating the distance from the star where the ice doesn’t melt

a conditional line indicating the distance from the star where the ice doesn’t evaporate

What determines the possibility of the existence of liquid water on the planet?

distance from the star

color of the star

amount of radiation from the star