Presentation on theme: "Problem How does the density of different woods affect how long the wood can burn?"— Presentation transcript:
Problem How does the density of different woods affect how long the wood can burn?
Hypothesis If the wood is heavy then it will burn longer because of the woods density.
1.5 different types of wood 2.Barbeque grill 3.Stopwatch 4. Postal scale 5. Handsaw Materials
Procedure 1.Gather five different types of wood and cut them with the handsaw into four pieces (3in. by.5in. by 1in.). 2.Weigh the wood (oz.) on scale and record weight in data table. 3.Warm up barbeque to 550 F then place the wood on the grill and start timer. 4.After fifteen minutes take the wood off of the grill and weigh them (oz.). 5.Take wood back out to the grill and burn them until gone. 6.Repeat steps 2-5.
Manipulated Variable: Type of wood. Responding Variable: How long the wood burns. Controlled Variable: How long the wood is in the barbeque grill (20 min.) and the amount of each wood. Variables
Data table: Heat Efficiency Type of wood1.25 Starting Weight (oz.) Ending weight (oz.) Trial 1 Ending weight (oz.) Trial 2 Alder.75.2.1 Douglas Fir1.2.1 Madroña1.25ashes.1 Elm1.25ashes0 Oak18.104.22.168
Conclusion In conclusion, I wanted to know the density of the wood affects how long the wood can burn. My hypothesis was, if the wood is heavy then it will burn longer because of the woods density. In the first trial I noticed that after fifteen minutes the Douglas Fir wood had expanded. The Madroña and Elm had become ashes and that the Oak and Alder were the most intacted. In the second trial the Madroña, Douglas fir and the Alder were all the same ending weight.1 oz. The Elm’s weight was zero and the Oak lasted the longest weighing in at.25 oz. In this experiment I learned that, the Oak would be the most efficient wood for house burning because at the end of fifteen minutes it weighed the most out of all five woods. The madroña and Elm would be the worst for burning because at the end of fifteen minutes they were ashes or didn’t weigh more that.1 oz. Next time I will add more wood and make the wood pieces bigger.
Background information Gas Heat To help conserve the energy you use, follow these energy saving tips: *Consider a High Efficiency Furnace - High efficiency gas furnaces reduce heating costs up to 50% (over a heating season) compared to similar equipment that is 10 to 15 years old. *Heating System Tune-up - Inefficient heating systems can waste energy and money. To ensure your heating system is operating most efficiently, have a qualified licensed contractor inspect your system. A tune-up usually consists of testing the system for combustion efficiency, cleaning nozzles or burners, changing filters and making fuel/air mixture adjustments. *Chimneys and Vents - Clear chimneys and vents of animal nests, debris and obstructions. This will help your heating system operate efficiently and prevent carbon monoxide buildup. *Filters - Dirty Filters reduce air flow and make heating systems work harder and use more energy. Dirty or clogged air filters can increase operating costs up to 10%. Change the filters on forced air systems once per month during the heating season. *Heating Ducts - Make sure heating ducts are free of cracks and leaks. Seal cracks and leaks with metal duct tape. Install duct insulation, especially where ducts run through unheated spaces. *Adjusting Your Thermostat - Lowering your thermostat one degree can save up to 3% on your heating fuel for each degree below 73 degrees. Set your thermostat to 68 or lower during the day and 65 at night. Add an extra layer of clothing and blankets. Caution should be taken when elderly persons or infants are in the home. A programmable thermostat is an effective way to automatically change temperature settings. *Air Vents and Registers - Make sure furniture, drapes and carpeting do not cover air supply registers and cold air returns. *Take Advantage of the Sun - In the winter, open drapes during the day to take advantage of solar gain. At night, close the drapes to keep the heat in. *Range-top Burners Or Ovens - Never use range-top burners or ovens for home heating purposes. Continuous burning can lead to the production of carbon monoxide and/or fire hazards.