Vernier Science: The Greenhouse Effect SHAW STEM LAB 2015 Things youll learn How to measure temperatures as a model greenhouse and a control are heated How to determine the temperature change for two containers How to use the result to make conclusions about the greenhouse effect
What greenhouse gases are How greenhouse gases change a planets temperature How to use LoggerPro Background Information Greenhouses allow gardeners to grow plants in cold weather. This is because a greenhouse
stays warmer than the outside air. You can feel this effect in a car parked in the sun. On a larger scale, the greenhouse effect helps keep our planet warm. It makes Venus one of the hottest planets in our school system. Background Information In this experiment, you will use Temperature Probes to measure temperatures in a model greenhouse and in a control as they are heated. You will then calculate the resulting
temperature changes. Research Look up and define the following: Variable (in terms of science experiments) Control (in terms of science experiments) Greenhouse gases
What You Should Know Now lets explore the Logger Pro software. Its what youll use to record and analyze your experimental data. Launch Logger Pro software. Then under the File menu, click Open and select the Tutorials folder. Click on Tutorial 1 Getting Started and follow along with the tutorial. This tutorial will teach you how to use the Logger Pro software. Things youll need Check out the Greenhouse Effect Kit, it should contain the following: 2 Temperature Probes
2 Rulers Two 600 mL beakers Youll also need Tape Desk Lamp
Plastic Wrap Do It & Research Tape Temperature Probe 1 and Temperature Probe 2 each to a ruler as shown. The probe tips should be 3 cm from the ruler ends and the tape should not cover the probe tips. Connect the temperature probes-as shown on the next slide. Start the Vernier data-collection program and open the file 03 The Greenhouse Effect from the Middle School Science with Vernier folder.
Do It & Research Connecting the Temperature Probes to the LabQuest Mini Do It & Research Preparing the two beakers for data collection Place a layer of soil (from outside) 1 cm deep in each beaker
Place the temperature probes into the beakers as shown Cover the beaker containing probe 1 tightly with plastic wrap. Beaker 1 is your model greenhouse and Beaker 2 is the control. Position a lamp bulb the same distance from both beakers. The bulb should be about 5 cm above the tabletop and the same distance from the two probe tips. Click to begin data collection. Turn on the lamp. Data collection will stop after 15 minutes. Do It & Research
When data collection stops, turn the lamp off. Click the Statistics Button, , then click to display a Statistics box for each probe. Record the minimum and maximum temperature for each probe. Create and fill in a table similar to the one shown below. Probe 1 Model greenhouse Maximum Temp. Minimum Temp.
Temp. Change Probe 2 Control Do It & Research Describe the results of your experiment. Did the model greenhouse warm faster or slower than the control? What do you think caused the difference? Explain why a closed automobile heats up in the
sun. Describe one advantage of using a greenhouse for growing plants. Why might the greenhouse effect be a problem on earth?
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