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Author Question: An order has arrived that the original cube must be broken down into eight cubic pieces of marble, ... (Read 50 times)

faduma

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on: Jul 16, 2018
An order has arrived that the original cube must be broken down into eight cubic pieces of marble, all of the same dimension of 6 square feet per cube. What is the total surface area of the marble now?
 
  A stonemason has shaped a block of marble into a perfect cube with dimensions of 2 feet by 2 feet by 2 feet.
  What will be an ideal response?

Question 2

Thermal expansion and thermal contraction are two processes where the presence of heat will weather a rock, breaking it into smaller pieces. In which category of weathering would you expect to find thermal expansion and contraction? Why?
 
  What will be an ideal response?


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ghepp

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: The cube has now been broken into eight smaller cubes with the dimensions 1 foot by 1 foot by 1 ft, equaling a total surface area of 6 square feet per cube; 8 times 6 square feet equals 48 square feet. So the surface area is increasing.

Answer to Question 2

Answer: Mechanical weathering because the rock is being broken down, but not chemically altered.


faduma

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Reply 2 on: Jul 16, 2018
YES! Correct, THANKS for helping me on my review

Joy Chen

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Reply 3 on: Yesterday
Wow, this really help

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