To be Warm, or To be Cold. That, is my Experiment.
Diego Ferreira Martins
St. Luke Bilingual Elementary School
Grade 5
Presentation
Hypothesis
My hypothesis is that if I move the air around the house together (such as the upstairs, basement) then the temperature that’s in the basement will be the similar as the upstairs because, once one temperature goes with another it will blend to become one balanced one.
Research
I did a research of questions I should know of for my project, one being Why hot air goes up and cold air goes down. I also found 2 forum’s for similar projects that talk about how to make your basement warmer or your upstairs more cold.
Variables


Procedure
Setup: 1. Put the tube in the upstairs room and extend it to the basement room. *The basement room is 3.8 m × 3 m × 2.7 m.
2. Put the Bathroom Fan in the basement and the Leaf Blower in the upstairs. *The Upstairs room is 3 m × 3 m × 2.7 m.
3. Connect the leaf blower to the tube that is in the upstairs. Also connect the tube to the bathroom fan in the basement.
4. Put 1 thermometer in the basement room and 1 in the upstairs room.
5. Tarp the rooms\, shut with green tape so no air goes through.
6. Close all windows in the house so it doesn’t affect the tests.
Experimental Run: 1. Write down the outside temperature.
2. Make sure all tarps are secure so no air goes through.
3. Wait 20 minutes for the air to stabilize
4. Start a stopwatch.
5. Mark the time\, and the 2 temperatures.
6. Every 5 minutes\, remember to mark the time\, and the 2 temperatures.
7. When it reaches the 20 minute mark\, turn ON the blower and keep the Furnace ON.
8. Once it reaches the 40 minute mark\, turn the furnace OFF and keep the Blower ON.
Observations
All tests had very similar temperatures based on speed and room air flow. I ran 3 trials of each experiment.




Analysis
I saw that it would only have a big impact after the first 20 minutes and after the 40 minutes it would revolve around the same temperature or not change at all.
Conclusion
My hypothesis was correct. By blowing the warm air of the upstairs to the basement, the basement felt warmer. By using the 2 blowers and the furnace, I was able to push the warm air to the basement which gave results showing it got warmer. By the image of the results you can see here that that the blue section which didn’t have the blower on stayed cold. However, the parts in green and light blue increased a bit. This confirms that yes, is that if I move the air around the house together(such as the upstairs, downstairs) then, the temperature that’s in the basement will be the similar as the upstairs.
Application
Some people could use my information for their homes as well. In the future, I could improve the precision of the timing, or I could find a way to blow more quantity of air so it would get to the basement faster.
Sources Of Error
Instrumental The thermometer could have read readings wrong. The blower pushed less air than what it says. The Leaf blower would stop at the 15 minute mark because the battery discharged. Enviromental The outside temperature maybe could have changed during the experiment and have made an impact on the temperature of the thermometer . Human I could have not known about a air leak from the tarp not being taped down enough. When I went to change the blower to be on or off, air could have escaped from the basement and changed the temperature.
Citations
- The Tibble. How to Move Cold Basement Air Upstairs. The Tibble, n.d. https://thetibble.com/move-cold-basement-air-upstairs/
- How a Furnace Works. YouTube, n.d. https://www.youtube.com/watch?v=kmZu2lXg91Q
- Institute for Environmental Research and Education. How to Get Cold Air From Basement Upstairs. Institute for Environmental Research and Education, n.d. https://iere.org/how-to-get-cold-air-from-basement-upstairs/YouTube.
Acknowledgement
I would like to thank the CYSF Team, my Parents, my Brother, Mme Goodchild, Mme Jasmine, parents volunteers and especially Mr. Owoc for contributing every year to make CYSF happen at St.Luke.
