EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following statements is true about the earth’s subsystem?
A
Most of the liquid water found in earth’s surface is potable
B
If the earth had been bigger than its current size, it would have less gravity
C
. It takes 500 seconds from light from the sun to reach the surface of the earth
D
Earth is the only planet in the solar system having water in three phases:solid, liquid and gas.
Explanation: 

Detailed explanation-1: -Earth is the only planet with a significant amount of water present in all three states. All three phases may be present in a single location or in a region. The three phases are solid (ice or snow), liquid (water), and gas (water vapor). See ice, water, and clouds pictured below (Figure below).

Detailed explanation-2: -Everything in Earth’s system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called “spheres.” Specifically, they are the “lithosphere” (land), “hydrosphere” (water), “biosphere” (living things), and “atmosphere” (air).

Detailed explanation-3: -All of the liquid water on Earth, both fresh and salt, makes up the hydrosphere, but it is also part of other spheres. For instance, water vapor in the atmosphere is also considered to be part of the hydrosphere.

Detailed explanation-4: -The lithosphere is the solid, outer part of Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure.

There is 1 question to complete.