ERSC181 Week 6 Exam Questions and Correct Answers (Graded A+)
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ERSC181 We-ek 6
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ERSC181 We-ek 6
ERSC181 Week 6 Exam Questions and Correct Answers (Graded A+)
Amphoteric - Answers a substance that can act as both an acid and a base
Cohesion - Answers water sticks to itself.
gives water surface tension and it has the highest cohesion of all nonmetallic liquids.
Adhesion - Answers water s...
ERSC181 Week 6 Exam Questions and Correct Answers (Graded A+)
Amphoteric - Answers a substance that can act as both an acid and a base
Cohesion - Answers water sticks to itself.
gives water surface tension and it has the highest cohesion of all nonmetallic liquids.
Adhesion - Answers water sticks to other things.
specific heat - Answers the heat required to raise the temperature of the unit mass of a given substance
by a given amount (usually one degree).
At what temperature is water most dense? - Answers 4 degrees Celsius
The shape of the water molecule is unique with two hydrogen ions bonded to the side of the oxygen ion.
This give water several unique properties. Select four of them. - Answers Adhesion, cohesion, polarity,
and high specific heat.
This unique property of water keeps the oceans from freezing from the bottom up. - Answers Water is
most dense 4 degrees above its freezing point.
Water is most dense at about 4 degrees above freezing which means that liquid water sinks. If it
behaved like most other substances, it would increase in density until it froze meaning lakes and the
ocean would freeze from the bottom up and we and life would not be possible as we know it.
What is an important result of the molecular process by which water freezes in contrast with most other
substances? - Answers Ice floats on water.
Most materials become more dense when they freeze. Water molecules arrange themselves in
crystalline water with greater spacing than in liquid water meaning ice is less dense than water and it
floats.
water cycle - Answers the cycle of processes by which water circulates between the earth's oceans,
atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and
return to the atmosphere by evaporation and transpiration.
Transpiration - Answers When plants contribute significant amounts of water vapor as a byproduct of
photosynthesis.
Evapotranspiration - Answers The combined amount of evaporation and transpiration
, condensation nuclei - Answers Microscopic particles on which water vapor condenses to form cloud
droplets.
Sometimes in the form of microscopic dust or salt.
Precipitation can take the form of what? - Answers Rain, snow, hail, or sleet.
Surface Water - Answers Precipitation that does not infiltrate the ground or return to the atmosphere by
evaporation or transpiration.
(Water in streams and lakes)
ground water - Answers water that infiltrates into the soil and finally fill the pore spaces in the rock or
sediment deep underground.
(all subsurface water)
Precipitation - Answers rain, snow, sleet, or hail that falls to the ground.
Interception - Answers Water being prevented from reaching the surface by trees or grass
Percolation - Answers The downward movement of water through soil and rock due to gravity.
Aquifer - Answers An underground formation that contains groundwater
Runoff - Answers Part of the water cycle where an excess of water runs down and does not sink into the
soil and eventually makes it to the rivers, lakes, and oceans.
Based on the water cycle, all water available to land dwelling organisms including humankind, ultimately
comes from where? - Answers From the sky as precipitation.
All water on land ultimately comes from the sky in the form of precipitation. We may pump a lot of it
from the ground, but in an ultimate sense, even ground water is replenished from the sky. Thus
increasing drought, predicted as a consequence of global warming, is a serious concern!
What happens to water after falling to Earth as precipitation? SELECT ALL THAT APPLY - Answers It runs
off
It evaporates
It infiltrates
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