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Density of Solids. Introduction to Density Which weighs more, a pound of feathers or a pound of bricks? Explain. Data Table:. Science Notebook Layout DON’T COPY UNDERLINED TEXT Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre. Density calculation: Density = Mass/Volume

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Science Notebook Layout DON’T COPY UNDERLINED TEXT Mrs. Aguirre’s Webpage: quia/profiles/caguirre


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    1. Density of Solids Introduction to Density Which weighs more, a pound of feathers or a pound of bricks? Explain. Data Table: Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Density calculation: Density = Mass/Volume = ___g/ ___mL = ____g/mL We think this object is : _____ because… Describe the objects- color, etc Measure Mass with scale in grams. Use the displacement method to find the volume in mL. Graph your data on graph paper. Draw trend line. Calculate the item’s density in g/mL.*** (slope of line- average) Use the chart to try to identify what the item is. For each item, write two observations- one qualitative and one quantitative. Under the chart, make a list: How they are similar: How they are different: Densitydescribes how much mass is in a given volume of a material. Mass is measured by a scale in grams. Volume can be measured by a technique called displacement. 24 25

    2. Conclusion : Label paper cups: R and B for red and blue. Mark a line about 1/3 of the way from bottom Put 1 level tsp of each mix in your cups. Test the aroma (use correct technique) and appearance of each. Record ratings. Use the toothpick to taste each dry mix. Record ratings. Mix with water: Recipe Don't mix up the spoons.1 level tsp. powder + 1/3 of the small cup of warm water.STIR WITH TOOTHPICK!! Analysis of cocoa lab The experimental variable is __________ Variables we Made the Test Controlled: Unfair: 3. How could bias influence the outcome of the cocoa lab? 4. Assume 2 brands of cocoa-explain how we could have done an experiment that was not biased. List at least 3 things we SHOULD have done so as not to be biased Include ways to make it a “blind taste test”. PICTURES!! Tape in Cocoa Lab WS Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Use 6 lines ONLY!! 22 23

    3. Graph of Data My job: _________ Investigation 2B: Making Predictions Read page 8 of the Lab Manual What is a model? What will we use the model we create for? QUESTION: ______________________________ Independent (experimental ) Variable: _________ Dependent (measured) Variable: _______________ Controlled Variables: • • (List at least 4) • • Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre DATA TABLE: COPY FROM PAGE 9 Predictions: I predict that it will take ___ sec for it to go 80 cm. I predict that it will take it ___ seconds to go 90 cm. 20 21

    4. Conclusion Paragraph: Topic sentence and conclusion Answer the question Did data support hypothesis? Explain using Supporting data (averages) Why do you think the hypothesis was correct or not ? What variables did you have to control to make it a fair test? Graph of Data My job: _________ Problem: Does increasing the mass of a car make it go down a ramp faster? Skip 1 line Hypothesis: If we increase the mass of the car, it will ……………. Skip 1 line Procedure: Ramp- which hole? Photogates- where? A,B?, interval? Clay Roll car 3 times to get similar time (0.001 accuracy) Add weight? Experimental Variable: Weight of car Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Data Table: Materials List: 18 19

    5. Discussion for Lab 2A 1. Hypothesis: Cars on steep ramps have shorter times between photogates. 2. Do the results of the 2nd trial agree with the hypothesis better than the 1st trial? Explain why.. 3. Draw a graph of your data for trial 2 Draw a picture of the proper setup of ramps to control variables- do not forget labels!! Move the photogates to the 2 higher black circles. Unscrew the starting bolt all the way. Release car “other man” style, no push Release the car until you get 3 runs with the time within .001 sec of each other. My job: _________ Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 16 17

    6. pg 14: Name at top of page. Measurements have two parts: the number and the unit. The number or quantity answers the questions, “How much?” or “How many?” The unit is the way the number is measured. Make a detailed drawing of the ramp: Tape in WS 1B Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Use 10 Lines • Label photogates correctly "A" & "B". • Show wires hooked up to timer correctly (color red or blue)(Use Red for A and Blue for B • Draw cars going through photogates, tell what happens to timer. • Below picture: Answer questions with a paragraph: • 1. Should timer be set for "stopwatch" or "interval"? Why? • 2. Which lights should be on, A, B, or both? Why? • 3. Describe what will happen to time when a car rolls down 14 15

    7. Science Lab Safety Poster Neat Colored Safety slogan Pictures (due Tuesday 10/6/09) Safety Problems - color coded to picture 1 2 3 4 5 6 7 8 9 10. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Tape in Prof. I Furgot handout 12 13

    8. Ringed Flyer Lab- Graph and conclusions Conclusion: What was the best ring flyer design and why? Paragraph needs to include: Topic sentence and conclusion • Answer the question • Supporting data (averages) • Why do you think the change worked or didn’t ? What variables that were hard to control may have interfered? Ringed Flyer Lab Define“best flight”. Is it the longest distance? Greatest time or something else?Explain why. I think best flight is….. Because…..(use only two lines) list your observations to summarize your results. (at least 5) Include labeled diagram of design. New Question: What can we change about the flyer to improve its flight? New Hypothesis: Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 10 11

    9. Cartesian Diver Activity- p.8 6. What makes the cartesian diver sink? What is it about squeezing the bottle that suddenly makes something that floats sink? 7. Write a new question and hypothesis involving the air in the diver. What combination of air and water is best to make a cartesian diver sink and float easily? Can you make a diver out of other materials? Cartesian Diver 1. Question: What makes the diver go up and down? Skip 1 line 2. Hypothesis: The magnet attracts the diver and makes it sink. Skip 1 line 3.Record basic observations of the behavior of the diver. Record at least three questions about the diver. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 4. Was hypothesis correct? 5. Write and draw out your explanationof how the diver works use the rest of the page- put a box around your drawing and explanation 8 9

    10. Leave blank for now Leave blank for now Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 6 7

    11. Leave blank RAT for pages 37-42 of textbook Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 4 5

    12. Tape in scoring rubric Table of Contents Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 2 3

    13. Inside cover Title page: Totally covered with: colored pictures, your name in block letters, Your period Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 1