Module 7 Lab Weather Systems assignment help

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For this lab, you will learn about the atmospheric heating by conducting 2 experiments.

You will perform the following tasks:

  1. Complete experiment 1, modelling the atmosphere in a jar.
  2. Follow all of the steps in this procedure.
  3. Answer the post-lab questions.
  4. Complete experiment 2, modelling groundwater and air interaction.
  5. Follow all of the steps in this procedure.
  6. Answer all of the questions in the worksheet.

Experiment instructions and lab questions:

Lab 7 Atmospheric Heating

We will construct a model of the earth’s surface/atmosphere to explore how energy drives weather.

Materials

  1. Clear glass jar or drinking glass
  2. Small plate or bowl to be a ‘lid’ jar or drinking glass
  3. Water
  4. Ice cubes
  5. Hot tap water

Procedure

  1. Put hot tap water to fill about ¼ of the glass jar.
  2. Fill the pate or bowl with ice and place on top of the jar.
  3. Observe the inside of the jar every 5 minutes for 30 minutes; after 30 minutes, carefully remove the ‘lid’ and look at the underside.

Post-Lab Questions:

  1. Which water cycle processes are represented in this model and by what components?
  2. Which processes are not represented? How could the model be altered to include these processes?
  3. How would the “weather” be affected if the water was at a decreased temperature? What about at an increased temperature? How could you model these changes in this system?

Experiment 2: Assessing Infiltration

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. (2) 9 x 12 in. sealable bags
  2. 250 mL Beaker (in lab kit)
  3. 250 mL Sand
  4. 200 mLWater
  5. A sunny location (window sill, outside porch, etc.)
  6. A shady location

Procedure:

  1. Measure 250 mL sand in each plastic re-sealable bag.
  2. Measure 200 mL room temperature water in each bag.
  3. Seal each bag, leaving a bit of air in each.
  4. Place 1 bag in a sunny location and 1 bag in a shady location.
  5. Observe the bags after 1 hour, then again after 12 hours.

Post-Lab Questions:

  1. What formed on the inside of the bags? What parts of the water cycle are represented in this experiment?
  2. What condition showed the greatest change? What force contributed to this change?
  3. How would increasing the proportion of land (sand) to water affect the amount of water vapor released?
  4. How would drought conditions impact infiltration and evaporation from the ground?

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