9­1 SI Units.IB1.notebook
August 30, 2016
SOTU2
Scale of the Universe Card Sort Activity
• At your Table, sort the cards in order from the smallest item pictured in the card to the largest item. (No fair communicating with other groups or accessing the Internet or textbooks, etc.)
• When you are satisfied with the arrangement, make a 4­column table in your journals listing all items in column 2 in the order (smallest to largest) your group decided.
• In column 3, use the "scale of the universe 2" site and other Internet resources if needed, and look up each item. Record the size of the item in meters using proper scientific notation
• In column 4, record 1 interesting fact about each item
• Go back and in column 1 sort numerical order based on recorded size
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9­1 SI Units.IB1.notebook
August 30, 2016
Scale of the Universe Card Sort Activity
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Ranked size 2
Sorted Items 3
size (meters) 4
Facts
(smallest to largest) Summary: Describe both qualitatively and quantitatively, the scope of the magnitude between the smallest and largest objects that exist in the universe
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9­1 SI Units.IB1.notebook
August 30, 2016
Sense of Scale ­ Examining a Dime
1) Examine the edge and the front side of a dime (the "heads" side with FDR on it) with naked eye. Write down (in journal) everything you observe about the dime.
2) Now, using a magnifying glass, again observe the edge and the front of the dime. Record anything new that you observe. 3) Share out with your group what was surprising and then work together to do the following: Measure and record the dimensions of the dime (diameter and thickness) to the nearest tenth of a mm (0.01 cm)
D= ___________ +/­ .1 mm
Materials: magnifying glass, metric ruler
H=___________ +/­ .1 mm
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9­1 SI Units.IB1.notebook
August 30, 2016
Sense of Scale ­ Examining a Dime
Shrink Yourself: 4) Let us pretend that you were suddenly shrunk and placed upon the "heads" of the dime near the date (year) numbers. You realize that, while standing on the smooth surface just next to the numbers, you are just as tall as the height of these numbers. Based on the total height of the dime, estimate this height. ("The dime is ______mm, and the numbers appear to be about ____% of that height, so I am now _________mm tall.)
5) How tall are you, using regular notation and scientific notation, in units of
a) mm?
b) cm? c) m ?
5) What is the ratio of your real/new height? Scale (_____:______)
6) What assumptions did you make in the process?
7) Now, in your new shrunken size, "walk" around the "heads" of the dime. Imagine what it would be like if you were that small. In a short paragraph, record the trip describing some of the features you notice.
8) Keeping this same scale (the real dime and the shrunken you), calculate how big the dime thickness would appear to be if you were tall again? In other words, if you happened to shrink with a meter stick in your hands (that also shrunk), how many meters tall would the edge of a real­sized dime be?
New H =___________m
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Attachments
Sig_Figs__Sci_Not.ppt