›warm up: complete this on your activity 8 notes page! ›do you think that gas has volume? why or...
TRANSCRIPT
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› Warm up: complete this on your Activity 8 notes page!
› Do you think that gas has volume? Why or why not?
Activity 8: Measuring Volume
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› What are the two ways to measure volume?
› How would you measure the volume of:– A nail– A tennis ball– A pizza box
Activity 8: Measuring Volume
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› What is the volume of a cylinder with a diameter of 6 cm and a height of 3 cm?
Activity 8Measuring Volume
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› What is the volume of the irregular shaped object?
Activity 8Measuring Volume
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› With your group, wrap up measuring the cubes, cylinders, and bars in your box.
› Record your data in Student Sheet 8.1b.
Activity 8Measuring Volume
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Class ComparisonObject Method
UsedMeasurements Formula and Calculations Volume
Light gray bar
Dark gray bar
Light gray cube
Dark gray cube
Light gray cylinder
Dark gray cylinder
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› Quantitative-
› Qualitative-
Quantitative vs Qualitative
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› What is the final ranking of the objects? List the objects from least to greatest.
Ranking of Objects
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List 1 List 2 List 3
150 mL 2 mL 1 L
11 mL 801 mL 999 mL
200 mL 27 cm3 998 cm3
Activity 8 Analysis Questions
Cross out the smallest and circle the largest in each list.
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› Volume- a measure of how much space something takes up.
› There are two ways to measure volume:– Measurement and calculation- plug and chug based
on your formulas. Lxwxh or h
– Water displacement- final volume- initial volume= volume of object
› 1 mL = 1 cm3
Activity 8In Case You Missed It…
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› Quantitative observations use measurements.– Ex: the cube has a length of 4 cm. The monkey has a
mass of 140 g.
› Qualitative observations do not use measurements.– Ex: the cube is silver. The monkey is purple.
Activity 8In Case You Missed It…
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› Please open your books to page A36.
Activity 9:Measuring Mass and Calculating Density
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› How do you define mass?
› How do you define weight? Is it different than mass?
Activity 9:Measuring Mass, Calculating Density
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› What is the formula for density?
› Today, you are going to measure the mass of the metal objects.
› Make sure the scale is zeroed!
› Record data on Student Sheet 9.
Activity 9:Measuring Mass, Calculating Density
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› Use the mass and the volume from Activity 8 to calculate the density of the cube, bar, and cylinder.
› Then, use your calculations and Table 3 (on Student Sheet 9) to determine the identity of the objects.
Activity 9:Measuring Mass, Calculating Density
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Object Mass (g) Volume (cm3 or mL)
Density Calculation
Density (g/cm3 or g/mL)
Light gray bar
Dark gray bar
Light gray cube
Dark gray cube
Light gray cylinder
Dark gray cylinder
Class Comparison
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Object Density Calculated Closest Density from Table 3
Object’s Material
Light gray bar
Dark gray bar
Light gray cube
Dark gray cube
Light gray cylinder
Dark gray cylinder
Class Comparison
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› Does the density of an object change if its size changes?
– If a piece of clay has 10 g of mass and a volume of 5 cm3
what is the density of the clay?
– What if you cut it in half? What is the density of the 2 half pieces of clay?
More About Density
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› On your own, with a partner, or with your group, work on Analysis Questions 1-3.
› Question 3e is a UC assessment!
› The scoring guide is in the OneNote Content Library
› All questions should be answered in OneNote on the Activity 9 Analysis Questions page!
Activity 9 Analysis Questions
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› OneNote Content Library- go there!
› COMPLETE IN ONENOTE
› Worth 40 points.
› Prompt: How do the densities of the new pieces compare with the density of the original block? Use your answer to question 3 and a diagram to illustrate your answer.
› Due: Friday
Activity 9 UC Assessment