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Density

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Last updated over 5 years ago
7 questions
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You are Indiana Jones entering a bobby-trapped temple in Peru to retrieve a priceless golden idol. After much research, you discover that the people who built this temple had an immense fascination with geometry and bobby-traps. You hesitantly enter the temple doors making sure the coast is clear.
You need to switch the idol out for a bag of sand. The shape doesn’t matter but the mass must be the same.
Question 1
1.

The idol looks about 8 cm wide and 12 cm tall. You think the best way to estimate the volume is to use a cylinder. Calculate the approximate volume rounding to the nearest cubic centimeter.

Question 2
2.

Gold weighs 19.32 g/cm^3, use this to calculate how many grams the golden idol is.

Question 3
3.

If sand weighs about 2.5 g/cm3 how much sand do you need in order for it to weigh the same as the golden idol so that you can switch them?

Question 4
4.

In the movie clip, Indian Jones sets off the trap when he switches sand for the golden idol. Do you think he set off the trap because he used too much sand or not enough sand? Why?

Denstiy: A measure of how much matter is in a certain volume per single unit.


Question 5
5.

Exampe#1: A brick has a volume of 50 cubic centimeters and a density of 2 grams
per cubic centimeter. What is its mass?

Question 6
6.

Exampe#2: A synthetic diamond has a density of 3.0 grams per cubic centimeter and a mass of 8.7grams. What is its volume?

Question 7
7.

Exit Ticket: A stainless steel knife has a density of 8 grams per cubic centimeter and a volume of 3 cubic centimeters. What is its mass?