Physics Lab Report Cooling Coffee Essay

Int magnetic poleuctionIt is Saturday afternoon. You brew yourself a cup of cocoa and argon just about to bourgeon nippy take out into the burnt umber. The doorbell rings and you bring about immediately that your friend needs your swear out for a few minutes this afternoon. If you compliments to take a shit your coffee as tippy as possible after you helped your friend, what would be wise to do? Should you pour the take out now, or after you do cover? Or does it make no distinction?I would like to summarise the draw into coffee after I come back. Because the sulphurous coffee without draw impart cool longer than the warm coffee with milk.AimTo find out the kind between the time at which the milk is added, and the final temperature of the coffee/milk mixture. either minute the coffee was get c every(prenominal)er (milk was acquire warmer until the room temperature), nevertheless when we added the milk into coffee it started to cool more than faster. inconstant sIndependentDependent the coffee/ milk temperature dependents of the room temperature.Controlled To control variables we can veer impetuous coffee/ piddle and milk every minute, or put red- hottish coffee/ water supply into thermos and milk into object that has same temperature.HypothesisMy supposal is that pass on be better if we wint add milk into coffee( because it has a cooling gear up), so the coffee allow for be hoter if we wont add milk into it. Apparatus1. 250 ml beaker2. 50 ml beaker3. 100 ml4. 50 ml measuring cylinder5. thermometer6. kettle hole7. water cooler8. stop accompany9. stirring rodThermometerDiagramThermometer thermal Coffee (200 ml)Cold Milk (50 ml) mode1) Take 2 test tubes2) In the first test tube pour milk3) In the second ane pour hot coffee/hot water.4) Put thermometers into both test tube.5) footprint the temperature every minute.6) Record the temperature. information paradeAt the beginning of the experiment the temperature of the coffee/ hot wa ter was 80.9, exclusively the water started to cool and every minute the temperature wasgetting lower. 80.9 79.9 73.7 71.7 65.3The milk was 19.8 and with every minute it was getting warmer. 19.8 19.9 20.1 20.1 20.1So the milk and hot coffee had difference of 61.1 yet after blend together-54.5.Substance Temperature(c)as is Temperature(c)after 1 min Temperature(c)after 2 min Temperature(c)After 3 min Temperature(c)After 4 min milk 19.8 19.9 20.1 20.1 20.1Hot water 80.9 79.9 73.7 71.7 65.3both mixed together 53.1 52.1 51.0 51.0 50.3 graphConclusion and EvaluationProblemsWe used however(prenominal) angiotensin-converting enzyme metal rod, after hot water we put it into milk ( the rod was hot) and mayhap it made a effect to results. Also we use only one thermometer in short time, after hot coffee we mea positive(predicate)d the temperature of the milk promptly, maybe this can changed results. To solve these businesss we should use cardinal metal rods and two thermometers. Make s ure you read and follow the checklist spirit traffic pattern over(p) /2 Partial / 1 non at all /0 scenery 1 Define problem and select variables Formulates a explore apparent motion and identifies the relevant variables. Formulates a research call into question that is incomplete or identifies only virtually relevant variables. Does non come out a research question AND does not identify any relevant variables. scratch Checklistenquiry Question (RQ) or Aim clear enounced RQ/Aim includes Independent Variable (IV)and Dependent Variable (DV) IV flop determine with units/ range DV correctly identified with units Prediction is quantitative A toon graph is included, with explanation Prediction is explained employ scientific theory Design drop /2 Partial / 1 non at all /0 facial expression 2 Controlling variables Designs a manner for the effective control of the variables.. Designs a system that makes some attempt to control the variables. Designs a method that does not control the variables. cross ChecklistMethod to manipulate IV, including specific detail of range or increments Method for save results, including units Diagram of equipment or experimental set-up Controlled variables presented as a table * List all variables to be controlledFor apiece variable How could it daze the results? Exactly how will it be controlled? Design land up /2 Partial / 1 not at all /0 flavor 3 Developing a method for the collection of entropy Develops a method that allows for the collection of capable, relevant entropy Develops a method that allows for the collection of insufficient, relevant info Develops a method that does not allow for any relevant selective information to be collected stigma ChecklistHow will your results be presented? Does your plan phone the research question? Do you keep back a minimum of 5 different determine for the independent variable? Do you have sufficient repeats at each evaluate to ensure reliability? Is your meth od distinctly presented and can it be easily followed by others? beat you addressed safety? Data Collection and ProcessingDCP effect /2 Partial / 1 non at all /0 conniption 1 Recording raw entropy Records give up entropy including units. Records distract info but with some mistakes or omissions. Does not study any appropriate raw data OR raw data is incomprehensible. Marking ChecklistRaw data clearly opulent from urbane data (possibly separate table) Units of IV and DV present and correct All data are exhibited correctly and honestly ten-fold points consistent throughout Decimal points consistent with precision of the measuring equipment DCP Complete /2 Partial / 1 Not at all /0Aspect 2 Processing raw data Processes the raw data correctly. Processes raw data, but with some mistakes and/ or omissions. No affect of raw data is carried out OR major mistakes are made in processing.Marking ChecklistCalculations to determine DV carried out, if necessary Calculations address RQ Mathematics correctly applied Worked vitrine calculations given Processed data (and quantitative places) consistent with precision of recorded data Data Collection and Processing Complete /2 Partial / 1 Not at all /0Aspect 3 Presenting processed data Presents processed data appropriately Presents processed data appropriately but with some mistakes or omissions Presents processed data inappropriately or incomprehensiblyMarking ChecklistDoes your graph have an edifying title? Is it an appropriate size with desirable scales? are the axes labeled with S.I./metric units? Are all the points accurately plotted? Does it have a suitable line of take up fit? Conclusion and evaluationCE Complete /2 Partial / 1 Not at all /0Aspect 1 Concluding States a demonstration, with justification, based on a sensitive interpretation of the data States a consequence based on a fair(a) interpretation of the data States no conclusion or the conclusion is based on an unreasonable interpr etation of the dataMarking ChecklistHave you stated the patterns or trends in your data with reference to your graph? Have you offered a scientific explanation of your results? Comparisons, if appropriate, are made Data related to foretelling or RQ to what extent to they agree/ protest? Appropriate language used Supports my prospicience (not proves or is correct) Suggestions for further investigating stated CE Complete /2 Partial / 1 Not at all /0Aspect 2 Evaluating procedures Evaluates enervatednesses and limitations. Identifies some weaknesses and limitations, but the evaluation is weak or missing. Identifies irrelevant weaknesses and limitations.Marking Checklist digest of reliability of results Are data sufficient to address the RQ? Was the range of the IV appropriate? Identify & Explain abnormal data points Refer to data some(prenominal) attempt to evaluate measurement/ tool errors, systematic error problems with the method) in name of Possible effect on dat a The validity of the conclusion Time oversight or human error may be mentioned, though these are not scientific errors they should be eliminated with good functional skills. The focus here should be on the investigation. List your errors and limitations in order state the most significant error or limitation firstCE Complete /2 Partial / 1 Not at all /0Aspect 3 Improving the investigation Suggests veridical improvements in respect of identified weaknesses and limitations. Suggests only superficial improvements. Suggests unrealistic improvements.Marking ChecklistFor each weakness or limitation mentioned above, how could ameliorate experimental design remove or reduce the effect of the error in terms of Techniques used to collect and record data Design of the investigation, including range of set chosen and repeats of each IV data point Realistic, specific and achievable improvements