Science Experiment Report Tuấn Đức By: ________________________ Experiment title:____________________________________________________ This experiment will test the hypothesis that _______________________________________________________ regular object and irregular object can have different method to measure ____________________________________________________________________________________________ volume ____________________________________________________________________________________________ I predict that _________________________________________________________________________________ For____________________________________________________________________________________________ a regular-shaped solid the volume can be found by measuring its dimensions and the mass is determined by weighing. For an irregularly____________________________________________________________________________________________ shaped solid, the volume is found by immersion in a liquid. because_____________________________________________________________________________________ for a regular object the volume can be calculated using ____________________________________________________________________________________________ simple formula, while irregular cannot ____________________________________________________________________________________________ ____________________________________________________________________________________________ Mr Fantom Ryburn Valley High School Stick this page onto the next available page in your book. Variables Shape of object Independent variable:_______________________________________________________________________________ Method to measure volume Dependent variable:_________________________________________________________________________________ Control Variable Object Why it needs to be a control variable Use the same object when measuring mass and volume Equipment Diagram ___________________________________ regular object, ___________________________________ irregular object, liquid, balance, a beaker, ___________________________________ string, beaker ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Method Measure the mass of the _______________________________________________ solid material m on a top-pan balance _______________________________________________ Fill the measuring cylinder with a known volume of water V1 _______________________________________________ _______________________________________________ Shack the solid material very well. _______________________________________________ _______________________________________________ Immerse the solid in the cylinder. _______________________________________________ _______________________________________________ Measure the new volume V2 _______________________________________________ _______________________________________________ Calculate the solid volume as: _______________________________________________ _______________________________________________ V = V2 – V1 _______________________________________________ _______________________________________________ Calculate the density as: Density = m/V _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ Results Object First Regular 9392g/dm3 Irregular 1110g/dm3 Density Second Third Fourth Average 9392g/dm3 1110g/dm3 Conclusion I have found that____________________________________________________________________________________ regular object and irregular object can have different method to measure volume __________________________________________________________________________________________________ This is because______________________________________________________________________________________ for a regular object the volume can be calculated using simple formula, while __________________________________________________________________________________________________ irregular cannot __________________________________________________________________________________________________ Evaluation I trust my conclusion because:_________________________________________________________________________ For a regular-shaped solid the volume can be found by measuring its dimensions __________________________________________________________________________________________________ and the mass is determined by weighing. For an irregularlyshaped solid, the volume is found by immersion in a liquid. __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ weak, only one trial so less accurate Strengths of the method:_____________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ Sources of error wrong volume of object addtion volume of string no change when dive the object Improvements to the method look from the meniscus of the liquid use thin string/wire use sensitive cylinder Student did not look from the meniscus of the liquid; Causes of anomalies:_________________________________________________________________________________ __________________________________________________________________________________________________ String/wire used may be thick; __________________________________________________________________________________________________ __________________________________________________________________________________________________ Cylinder may not be sensitive __________________________________________________________________________________________________ Things I like about this piece of work: Targets to improve this piece of work: _____________________________________________ take longer time to plan before do the experiment ________________________________________________________ ______________________________________________ ________________________________________________________ ___________________________________________________________ ________________________________________________________ ___________________________________________________________ ________________________________________________________ it is simple _____________________________________________ ________________________________________________________
