SOLAR SYSTEM

UNIVERSE

LIFE IN THE SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Earth’s atmosphere keeps pressure and ____ at a level that allows liquid water to exist on its surface.
A
oxygen
B
hydrogen
C
electric energy
D
thermal energy
Explanation: 

Detailed explanation-1: -The atmosphere is the superhighway in the sky that moves water everywhere over the Earth. Water at the Earth’s surface evaporates into water vapor, then rises up into the sky to become part of a cloud which will float off with the winds, eventually releasing water back to Earth as precipitation.

Detailed explanation-2: -Answer and Explanation: The Earth’s atmospheric pressure and relatively stable temperatures make liquid water possible.

Detailed explanation-3: -The water in the atmosphere makes up only a very small percentage of the total water on Earth. In the atmosphere, water exists as a gas (water vapor from evaporation), as a liquid (droplets of rain and liquid water that coats solid particles), and as a solid (snow and ice).

Detailed explanation-4: -Earth’s interior heat flux. The Earth is constantly emitting thermal energy (heat) from its interior and crust into the atmosphere and global oceans.

Detailed explanation-5: -The atmosphere is held around the Earth by gravity. Gravity pulls gas molecules in the atmosphere toward the Earth’s surface, causing air pressure. Air pressure is the measure of the force with which air molecules push on a surface.

Detailed explanation-6: -There are three ways heat is transferred into and through the atmosphere: radiation. conduction. convection.

There is 1 question to complete.