Water On Earth 2020 Part 1 Question Preview (ID: 53731)
2020-21 Water.
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(75-65) percent of Earth's surface is covered with water.
a) 75
b) 65
c)
d)
Ninety-seven percent of the world's water is (fresh-salt) water, and most of that salt water is found in Earth's oceans.
a) salt
b) fresh
c)
d)
Of the three percent of Earth's water that is fresh, less than (10-1)% is found as surface water.
a) 1
b) 10
c)
d)
About (69-89)% of the freshwater on Earth is frozen in polar ice caps and mountain glaciers.
a) 69
b) 89
c)
d)
About (20-30)% of Earth's freshwater is found in the spaces between particles of rock in the ground.
a) 30
b) 20
c)
d)
Every drop of water is made of (thousands-millions) of water molecules.
a) millions
b) thousands
c)
d)
When a molecule contains bonded atoms with an unequal attraction for the shared electrons,it is called a (polar-tripolar) molecule.
a) polar
b) tripolar
c)
d)
Water can be found on Earth in (three-four) states.
a) 3
b) 4
c)
d)
Water as a gas, known as water vapor, can be found in the atmosphere.You (can-cannot) see water vapor.
a) cannot
b) can
c)
d)
Water molecules are polar--the positive and negative charges in different parts of each molecule attract each other.This attraction produces (cohesion-adhesion), that is, water molecules stick together.
a) cohesion
b) adhesion
c)
d)
(Cohesion-Adhesion) allows water droplets to stick to other objects, like a spider web.
a) Adhesion
b) Cohesion
c)
d)
Water has a (high-low) specific heat, so it can absorb a lot of energy without becoming too warm.
a) high
b) low
c)
d)
Because of its high specific heat, (less-more) energy is required to boil water than is required by many other substances.
a) more
b) less
c)
d)
Much of Earth's freshwater is frozen in polar ice caps and glaciers, some is stored in the ground, and a (large-small) percentage exists as surface water in lakes, swamps, and rivers.
a) small
b) large
c)
d)
Water's high specific heat means that it can (absorb-release) a lot of energy as heat and only increase its temperature by a small amount
a) absorb
b) release
c)
d)
Water's role as the universal (solvent-solution) means that it easily dissolves many other substances.
a) solvent
b) solution
c)
d)
When water vapor condenses into liquid water, energy is (released-absorbed) to the surroundings.
a) released
b) absorbed
c)
d)
(Sublimation-Deposition) happens when a solid changes directly into a gas without first becoming liquid.
a) Sublimation
b) Deposition
c)
d)
The (water-nitrogen) cycle carries water and any matter in the water around Earth.
a) water
b) nitrogen
c)
d)
Most of the water in the atmosphere comes from evaporation and (sublimation-transpiration).
a) transpiration
b) evaporation
c)
d)
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