Atmospheric Heating Water cycle dew point vapor

User Generated

wraaynyr

Science

Description

Part 1. Please answer the following questions in your own words:

  1. Explain the water cycle.
  2. What is dew point?
  3. Which source would evaporate faster, lake water or groundwater, and why?
  4. How do plants contribute to moisture in the air?
  5. Climatically, what can happen to a region when there is heavy loss of forestland?
  6. How is water vapor removed from the air?

Materials:

  1. Three clear glass jars or drinking glasses
  2. Three small plates or bowls to be a ‘lid’ on top of the jar or drinking glass
  3. Chilled water, room temperature water, and hot tap water
  4. Ice

Procedure:

  1. In one jar, put chilled water to fill about ¼ of the jar.
  2. In the second jar, put room temperature water to fill about ¼ of the jar.
  3. In the third jar, put hot tap water to fill about ¼ of the jar.
  4. Cover jars with the plate or bowl with ice.
  5. Monitor the inside of the jars every ten minutes until the water temp in all jars is similar; make note of any changes you see.

Answer the following questions:

  1. How long did it take for moisture to accumulate on the inside of any of the jars, and which one was first?
  2. Did you observe any ‘rain’ in any of the jars, and if so, which jar(s)? If not, suggest a reason why not.
  3. What parts of Planet Earth might each of these jars mimic?
  4. Explain how the evaporation and condensation processes are at work in this experiment.

Part 2. In this experiment you will observe how entrapped water moves from land to the atmosphere, and determine how weather conditions affect this movement.

Materials:

  1. (4) one-gallon size zipper baggies
  2. 6 cups of dirt (sand, soil, potting soil, whatever is available)
  3. 3 cups of room temperature water
  4. 3 small twigs with leaves off a living plant
  5. Tape

Procedure:

  1. Place about 2 cups of dirt into 3 separate baggies.
  2. Place 2 cups of water in one bag, and 1 cup of water in a second bag.
  3. Place the three leafy twigs in the third bag. Seal each bag.
  4. Place the last bag over a leafy part of a living plant; use tape to prevent moisture leaving the bag.
  5. Place the three bags with dirt in a warm area, either in the sun, a sunny window, heat lamp, or heater vent for 8 hours, monitoring every 2 hours.
  6. Record the type of soil used, and the ambient temperature for all bags.
  7. Observe and record any changes to each bag every 2 hours.

Answer the following questions:

  1. Report your observations of this experiment.
  2. Explain how this experiment relates to drought conditions.
  3. What would happen if you increased the ambient temperature? What would happen if you decreased the ambient temperature?
  4. Compare what you found between the twig bag and the taped bag around the living branch? Were these the results you were expecting? Why or why not?
  5. Explain how you could set up a terrarium to account for the following; evaporation, condensation, precipitation, runoff, infiltration, and percolation.

Your paper should meet the following requirements:

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Explanation & Answer

Attached you will find the requested lab report. Please let me know if you need some edits.

Atmospheric Heating
Lab Report.
Introduction
The hydrologic, or water, cycle is the continuous, interlinked circulation of water among its various
reservoirs (water bodies like rivers, lakes, oceans, etc.) in the environment (Lerner). The overall
process of the hydrologic cycle can be divided into five parts: condensation, precipitation,
infiltration, runoff and evaporation.
When the water vapor in the atmosphere lower its temperature below the saturation temperature
(dew point), it changes from gas to little droplets, forming clouds, which eventually got saturated
and release the water into the earth in the form of precipitation, also called rain (SOET).
When the precipitation enter into the earth there are two possibilities depending of the type of soil
that absorbs the water, if the soil has a high permeability, the water infiltrate into lower levels of
the soil to form underground water; in the other case, when the soil has reached it’s saturation
point, the water is released, flowing downstream like in a river. In some cases, the usage of
materials that have low permeability like concrete (used in buildings and roads) could prevent the
infiltration of the water into the soil, making an artificial runoff that could end in a flood (SOET).
The process when the water change its state of matter from water to gas (to begin the cycle again)
occurs in two ways: the physical way, called evaporation, when the sun gives energy to the
superficial water reservoirs, (this rarely could happen with the underground water due the contact
of this water body to the surface is mini...


Anonymous
I was struggling with this subject, and this helped me a ton!

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