Module 7 Lab: Weather Systems, assignment help
For this lab, you will learn about the atmospheric heating by conducting 2 experiments.
You will perform the following tasks:
- Complete experiment 1, modelling the atmosphere in a jar.
- Follow all of the steps in this procedure.
- Answer the post-lab questions.
- Complete experiment 2, modelling groundwater and air interaction.
- Follow all of the steps in this procedure.
- 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
- Clear glass jar or drinking glass
- Small plate or bowl to be a ‘lid’ jar or drinking glass
- Water
- Ice cubes
- Hot tap water
Procedure
- Put hot tap water to fill about ¼ of the glass jar.
- Fill the pate or bowl with ice and place on top of the jar.
- 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:
- Which water cycle processes are represented in this model and by what components?
- Which processes are not represented? How could the model be altered to include these processes?
- 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
- (2) 9 x 12 in. sealable bags
- 250 mL Beaker (in lab kit)
- 250 mL Sand
- 200 mLWater
- A sunny location (window sill, outside porch, etc.)
- A shady location
Procedure:
- Measure 250 mL sand in each plastic re-sealable bag.
- Measure 200 mL room temperature water in each bag.
- Seal each bag, leaving a bit of air in each.
- Place 1 bag in a sunny location and 1 bag in a shady location.
- Observe the bags after 1 hour, then again after 12 hours.
Post-Lab Questions:
- What formed on the inside of the bags? What parts of the water cycle are represented in this experiment?
- What condition showed the greatest change? What force contributed to this change?
- How would increasing the proportion of land (sand) to water affect the amount of water vapor released?
- How would drought conditions impact infiltration and evaporation from the ground?