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

Table of Contents- CONT. Table of Contents. Science Notebook Layout DON’T COPY UNDERLINED TEXT Mrs. Aguirre’s Webpage: http://www.quia.com/profiles/caguirre. 4. 5. Leave blank for now. Table of Contents.

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

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  1. Table of Contents- CONT. Table of Contents Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 4 5

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

  3. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Introduction to Density 11/7/11 Which weighs more, a pound of feathers or a pound of bricks? Explain. Data Table: Density calculation: Density = Mass/Volume = ___g/ ___cm3 = ____g/cm3 Calculate all densities for cubes on other page using volume found above. Round to nearest hundredth. Include all units as shown in example For each item, write three observations- one qualitative and one quantitative. Under the chart, make a list: How they are similar: How they are different: THE CUBES The cubes are similar in: and different in: VOLUME: Regular shaped solid FORMULA: Volume = L x W x H = __ cm x __ cm x __ cm = 40 41

  4. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Density of Solids 11/9/11 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 2 techniques: A) Volume formula (l * w * h) Or B) displacement. 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. Copy this under the charts. Use 6 lines Density calculations: 1. Density = Mass/Volume = ___g/ ___mL = ____g/mL We think the ________ object is : _____ (describe it) because… (use the chart to try to identify the solids) Copy graph on next page- tape it into your notebook 42 43

  5. Example graph of densities- Page 42

  6. Densities of items in increasing order • 0.64 g/ml Walnut • 0.75 g/ml Oak • 0.77 g/ml Maple • 0.90 g/ml Polypropylene • 0.92 g/ml LDPE (polyethylene) • 1.15 g/ml Nylon • 1.17 g/ml Acrylic • 1.23 g/ml Polyurethane • 1.32 g/ml Phenolic • 1.37 g/ml PVC (Polyvinylchloride) • 1.42 g/ml Acetyl • 2.2 g/ml Teflon • 2.7 g/ml Aluminum • 7.7 g/ml Steel • 7.9 g/ml Iron • 8.56 g/ml Brass • 8.91 g/ml Copper • 11.3 g/ml Lead

  7. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Definition and units to use: (page 78) INSTRUCTION MANUAL- To find the volume of: (List steps from p 78 to find the volume of each) 1. LIQUIDS (p.78) a. b. 2. REGULAR SHAPE SOLID a. b. c. picture picture picture picture picture 3. DISPLACEMENT METHOD (illustrated) for irregular Solids (use last two paragraphs on P78 to describe and draw the four steps in displacement method.) A. Fill the… B. Slide the object… C. What happens? D. How to get volume WILL DIFFERENT AMOUNTS OF A MATERIAL HAVE DIFFERENT DENSITIES? The density of the water is the same for each group because….. Density is a ________. As mass increases, volume ______, so when you ______ mass by volume, you get the _____ answer. 45 44

  8. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre King Bling and the Copper Caper Problem: Are pennies made of copper? My job: skip 2 lines Plan:Group decides how to solve the problem using your knowledge of density. PLAN must: - be specific (HOW will you measure) be accurate (how will you prove if the pennies are copper) Data: Include graduated cylinder drawingsrecord all data needed Data MUST include- pictures to show how data was obtained and ALL measurements made and information collected DO NOT INCLUDE DENSITY CALCULATIONS HERE • Copper Density Analysis • Calculations: MUST include: • Show all math in calculating • Comparisons to show if pennies are • made of copper • List formulas and make calculations for density of • Pennies • Copper (see NB 40) • Analysis:In a paragraph, give a logical answer to the problem: “Are the pennies copper?”. Include your reasons and all quantitative data to support your analysis. Use your density of copper from NB pg 40 to solve the problem • Must include: • - Are the pennies copper? • - Supporting evidence • - Recommendations for what King Bling should do. 47 46

  9. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre Page 49: Eureka Buoyancy Notes Page 48: The Egg Mystery Use 5 lines. Draw the egg/ beakers Label at least 3 things Observations Inferences (what I see) (what I think) Use 5 lines. Discuss with your partner and record observations and inferences Write at least 3 for each Write 2 questions you would like answered to help you understand the phenomenon. 1. 2. Use 4 lines ONLY Vector: page 48 An arrow that shows the DIRECTION and MAGNITUDE of a force Bigger force Small force 49 48

  10. Section Review 4.2 Page 87 1. The buoyant force on an object depends on the _______ of the object that is underwater. 2. What happens to the buoyant force on an object as it is lowered into water? Why? 3. The buoyant force on an object is equal to the weight of the water it ________________. 4. When the buoyant force on an object is greater than its weight, the object ___________. 5. A rectangular object is 10 centimeters long, 5 centimeters high, and 20 centimeters wide. Its mass is 800 grams. a. Calculate the object’s volume in cm3. b. Calculate the object’s density in g/cm3. c. Will the object float or sink in water? Explain. 6. Solid iron has a density of 7.9 g/cm3. Liquid mercury has a density of 13.6 g/cm3. Will iron float or sink in mercury? Explain. 7. Why is it incorrect to say that heavy objects sink in water? 8. Steel is denser than water and yet steel ships float. Explain. Buoyancy Worksheet Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre 50 51

  11. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre The Case of the Sinking Film Can: 12/8/11 Archimedes Principle PREDICT: Will an object that sinks weight the same, less, or more than its weight in air? _______________________________ EXPLAIN?: NB Page 52 12/9/11 The Case of the Sinking Film Can: Analysis and Conclusion 1. Calculate the density of the film can: Density = ------------- D = _____ g/ _____ mL D = _______ g/mL Density of water: _________ g/mL • 1. Weight of the film can (in grams) from spring scale ___ • 2. Weight of the film can (in grams) under water (not touching bottom) _____ • 3. How much less does the film can weigh under water? • This is the buoyant force = __________ GRAMS • Show subtraction: _______ - ______ = _____ • 4. Volume of film can: (use the displacement can) • Repeat the measurement until you get answers that are very close: • ________ mL ______ mL _____mL • 5. Weight of the water displaced: _________ • 6. Write out Archimedes Principle (Pg 83): ________________ ____________________________________________________________________________________________________________________________ • 7. Use Archimedes Principle to explain why the answer to #3 and #5 should be about the same Why doesn’t the film can float? 3. DENSITY OF OBJECTS AND LIQUIDS EXPLANATION The film can doesn_t float because..... Include: Drawing of film can (NO VECTORS) Measurements of mass and volume with UNITS Calculation of density Comparison of density of film can and liquid 4. THE BUOYANT FORCE EXPLANATION The film can doesn_t float because..... Include: Drawing of film can with vectors labeled with measurements from lab (1, 2, 3) Buoyant force definition and measurements with UNITS Weight definition and measurement. How does Archimede’s principle apply to the film can? 53 52

  12. Science Notebook Layout DON’T COPY UNDERLINED TEXTMrs. Aguirre’s Webpage:http://www.quia.com/profiles/caguirre The Film Can Challenge: 12/13/11 Archimedes Principle NB Page 54 12/12/11 The Soda Can PREDICTION: What will happen when we place a can of soda in Lake Aguirre? _______ predicted that……. because…. In your answer, include: density, mass, volume, buoyancy, weight, vector The Soda Can Why does the regular soda sink and the diet soda floats? In your answer, include: density, mass, volume, buoyancy, weight, vector Draw a labeled picture- include vectors for buoyant force and weight. (hint: look at page 49) The buoyant force on an object in water is equal to the weight of the water displaced. • MY JOB: __________________ • Analysis and Results: (answer these questions with complete sentences!!) • 1. What is the mass of an empty film canister? • 2. Did the mass of the canister change at all? Explain. • 3. Did the volume of the film canister change at all? Explain. • 4. What caused each canister to stay at their level in the water? Explain what caused the canisters to float, sink, or suspend using the term buoyancy.ANSWER In WORDS AND DRAWINGS WITH LABELED VECTORS: • DRAW FILM CAN, VECTORS LABELED WITH WORDS & MEASUREMENTS FROM LAB • (How does the buoyant force compare to the weight of the displaced water?) • Use the words: BUOYANT FORCE, DENSITY, WEIGHT, NET FORCE, FLOAT, SINK, DISPLACED WATER 55 54

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