Investigating The Greenhouse Effect On The Environment

Purpose: To investigate the greenhouse effect. Hypothesis: If the enclosed area heats up and doesn t allow air to escape, then the temperature inside the greenhouse should be somewhat higher than the temperature outside the greenhouse. Prediction: I predict that the temperature inside the greenhouse will rise from the heat of the suns rays. Materials: 2 thermometers 3 microscopic slides sticky tape 2 triangular pieces of cardboard 1 block of wood time-keeping device Procedure: 1) Copy the results table into your workbook. 2) Create a hole in one of the pieces of cardboard, just large enough for the thermometer to pass through. It needs to be a good seal to stop air from escaping. 3) Construct a triangular model using the 3 microscopic slides and sticky tape. 4) Place the greenhouse outside in a sunny position. 5) Place the second thermometer on the block of wood next to the greenhouse. 6) Record the temperature of the 2 theremometers at the beginning of the experiment. 7) Record the temperatures every 2 minutes for 14 minutes. Results: **Table** Variables: The independent variable used in this experiment was the greenhouse and the air. The air temperature was changed by building a greenhouse that would trap the air inside (making it hotter or cooler). The dependant variable was the temperature because that was what we were measuring. Lastly, the controlled variables were time and the thermometers. 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