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The rest of my poster is over there ------------->

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1. Flatten out a piece if clay, large enough for a jar, on the table
2. Place a tealight candle in the center of clay.
3. Put goggles on for safety
4. Use a match to light the candle. Caution: when lighting matches keep sleeves, hair, fingers, and objects away from the flame.
5. Blow out the match and put the match into the petri dish be careful not to drop the match. ( Relight the candle if needed.)
6. At the same time turn the jar upside down over the lit candle and start the stop watch. When placing the jar over the candle, press the jar into the clay to make a seal. This is the control (no extra CO2).
7. Make observations about the flame. Record in observation section. Remember to use details.
8. Time until the flame goes out. Record the time in seconds in the data table.
9. Remove the jar from the candle
10. Carefully rinse and dry the jar. Caution: use glassware safely
11.Repeat steps 4-10 two more times for a total of three trials for accuracy.
12. Find the average of the three trials: add all three numbers and divide by three. Record on the data table.
13. Use a match; relight the candle placed on the clay. Caution: remember fire safety.
14. Blow out the match,DO NOT SHAKE, and place the match into the petri dish
15. Quickly place the jar upside down over the clay and press into the clay to make a seal.
16. At the same time start the stopwatch.Note: relight and try again if the flame goes out.
17. Make observations. Record in observation section. Be detailed.
18. Time until the flame goes out. Record time in seconds in the data table.
19.Rinse and dry the jar. Caution: remember glass safety.
20. Repeat steps 12-19 for two more trials. Be careful to start the stopwatch at the same time every trial.

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One candle
-Not that foggy
-Big flame
-Flame lasted long
Two candles
-Very foggy
-small flame for both
-went out fast

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I am testing two lit candles under a jar vs one lit candle. In my experiment I lit one candle and timed it under a jar for 3 trials and then tested two lit candles timed under a jar for another 3 trials. My control was one candle and my variable was two candles. I learned that the more CO2 there is in a jar will effect the burn time because fire needs oxygen to burn but it doesn't like CO2 that much.
My hypothesis was if I light one candle then two candles under a glass jar then two candles will create a smaller flame because two flames take up more CO2 than one candle. My hypothesis was correct because on some of the trials two candles only lasted 25 seconds when one candle was lasting over a minute. The average for both tests was 35 seconds for two candles and 57 seconds for one candle. No, I did not notice any patterns, they were all different and not really alike. These results were important because I now know what CO2 does to fire and the same for oxygen.
A possible source of error is if we didn't press the clay out enough so then there would be gaps were oxygen could get in. An error in my tests were that sometimes I forgot to press the jar all the way down so once again oxygen could get in. The effect was that that test would be different than the others and I wouldn't be able to know the effect of the variable that well. Some improvements would be to make sure to pay extra attention and start the timer right as i need to. Understanding errors would be important because then, scientists could know what went wrong and fix it the next time they do their experiment.
This experiment is important to work on in relation to understanding the CO2 and O2 cycle because, it helps us know that we breathe out CO2 and we need O2 to live which is the same for fire. This experiment is in the real world by, like i just said animals, fire and humans all need the same thing to live. A different experiment would be to breath into a jar and put it over a lit candle. I chose this test because, I thought that it would be interesting to see what would happen and how big the time difference would be with two candles vs one candle. Learning about carbon dioxide and oxygen is significant because we may want to grow up and be scientists and i'm pretty sure you have to know how to study and observe CO2 and O2

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Untitled infographic by Sophia ONeill - Infogram

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If I light one candle then two candles are lit under a glass jar then two candles will create a smaller flame time because two flames take up CO2 than one.

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This experiment on the effects of the CO2/O2 cycle examines the relationship between Carbon Dioxide and Oxygen. Important terms to be aware of are CO2, O2, Joseph Priestley, Fire and the CO2/O2 cycle. I also know that , CO2 is what fire gives out and O2 is what fire needs to "live". The ideas found in this lab will confirm the link between fire and humans/animals. Although fire is a non-living object.      There are a few important scientific terms to think about that explain what CO2 and O2 mean. The first term is, CO2 which means Carbon Dioxide. Understanding Carbon Dioxide is essential information because, Carbon Dioxide is what puts a fire out. Also its the elongated form of CO2. Another important term to understand is O2 which means, Oxygen. These scientific terms are important int this lab because they clarify the link between, fire and humans/animals. An experience i have had with fire is, when i go camping i usually try to help start and put it out. I also have observed during my experience the main reason that when you blow on a small fire it goes out. Humans and animals breath out carbon dioxide( which puts out fire ). This information illustrates what happens to a fire when it's touched or has CO2 near it. This is significant because I know that CO2 and fire don't mix well, so then i know if i ever need to put out a fire to then blow on it or get someone to help me.

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-2 tealight candles
-Box of matches
-Goggles
-Petri Dish
-Timer
- Piece of clay flattened
-Large mason jar
-Counter space
-Water
-Paper towels

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If I light one candle and i light two candles in a jar, how will the amount of CO2 affect the length of time a flame will burn?

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Control: One Candle Variable: Two Candles