## Volume Puzzle

### Instructions:

Answer the following question by clicking on the below box and selecting the the single best response. The answer that shows is the answer you have selected. Your explanation for the method you used to determine your answer is more important than the click-on value! For 1 point, in the below example, select: Other. When you have completed the quiz click on the above "hand in quiz" button.

### Quiz:

Here are drawings of two vertical tubes (cylinders) which are filled to the same mark (6) with water. The cylinders are identical in size and shape.

Here are two marbles, one made of glass (red) and one made of steel (gray). The marbles are the same size, but the steel marble is heavier.

The steel marble is heavier than the glass marble, but both marbles will sink if placed in one of the cylinders. We are going to put one of the marbles into a cylinder:

With the glass marble inside of it, the water level in cylinder 1 has risen to 7. If we now put the steel marble into cyliner 2, to what level will the water rise in cylinder 2?

Explain why you predicted the result above: