Cover Pg 2 = Problem Statement, Research, Hypothesis Pg 3 = Proce- dure Pg 4 = Data, Observa- tions & Sketches Pg 5 = Analysis (Graphs & Inferences) Pg 6 & 7 = Conclusion “RERUN” Pg 8 = Back Cover, “extra space”
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From 1793 – 1837, the penny was pure copper. For the next 20 years, the penny was bronze, which is copper, tin and zinc. From 1857 – 1863 the cent looked whitish because it was made of copper with 12% nickel. For the next 98 years ( !) the penny was again bronze, except for Because of the need for copper during WW II, the cent was zinc-coated steel in In 1962 the tin was removed from pennies, making them 95% copper and 5% zinc. In 1982 this was changed to 97.5% zinc and 2.5% copper Citation: The Composition of the Cent; usmint.gov Pg 2 Slide 2 of 2
Clean up = what needs to be done at the end of the lab Wipe down table Wipe down table Return flasks & other equipment to back counter Return flasks & other equipment to back counter Safety = be careful about…. -- wear goggles -- wear goggles Operational Definition = how the dependent/responding variable is measured number of drops will be one less than overflow number of drops will be one less than overflow Set-up Sketch: = How the equipment was used (What’s missing from this sketch? Hint: it’s a good way to include your controls!) Pg 3 Slide 1 of 2
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My Group’s Data Collaboration Data I didn’t think water would pile up and make such a big mound on a penny! The 3 pennies really looked different from each other (OK, so I “cheated” b/c this is PowerPoint and I used Google to find pictures instead of making sketches… ) = includes data tables, observations & sketches = includes data tables, observations & sketches Observations: Number of Drops – Raw Data Trial 1Trial 2Trial Penny Penny Penny Number of Drops -- Averages My GrpGrp 1Grp 2Grp Penny Penny Penny (Use a ruler!!) Pg 4 Slide 1 of 1
My Group’s Graph (drops) Collaboration Graph (drops) Both graphs show that the 1943 penny held the most drops, the 1984 held the second highest number of drops and the 1963 penny held the least amount of drops. It can be inferred that the 1943 penny holds more water than the 1963 or 1984 pennies. = graphs & inferences Inferences: (Use graph paper!!) Pg 5 Slide 1 of 1
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