Activity #7: How Much Rock Is in an Icy Moon?* Name:...

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Chapter 1 / Exercise 1
Physics for Scientists and Engineers
Jewett/Serway Expert Verified
Rowan Introduction to Astronomy Activity #7: How Much Rock Is in an Icy Moon?* Name: _______________________________________________ Score: __________________________________ f Acknowledgement This activity is adapted from an exercise created by Hawai’ i Institute of Geophysics and Planetology, University of Hawai i. f Objective The outer planets Jupiter, Saturn, Uranus, Neptune and the dwarf planet Pluto have icy, rocky satellites (moons). Given the densities of the satellites, calculate the percentage of rock and ice in their compositions. f Rock and Ice Ratios [87 pts] 1. Silicate rock has a density of about 3.0 g/cm 3 (grams per cubic centimeter). Look at the first table on page 2. Based only on density, are any of the moons composed entirely of rock? yes no [1 pt] 2. Which two moons are closest to being composed entirely of rock? ______________________________________ [2 pts] 3. Water ice has a density of about 0.9 g/cm 3 (exactly 0.934 cm 3 ). Again, look at the first table on page 2. Are any of the moons composed entirely of ice? yes no [1 pt] 4. Which two moons (are) closest to being composed entirely of ice? ______________________________________ [2 pts] 5. We can make a graph to help figure out the percentages of rock and ice in the moons of the outer planets. Use the equations shown below (especially the second equation) to compute the density resulting from different percentages of rock and ice. Write your answers in the second table on page 2 (i.e., the third column). [Round your answers to 1 decimal place.] Density = (Percentage of rock × Density of rock) + (Percentage of ice × Density of ice) 100 ࠵? Moon = (࠵? rock ×࠵? rock ) + (࠵? ice ×࠵? ice ) 100 = (࠵? rock )(3.0) + (࠵? ice )(0.9) 100 6. Next, using the grid found on page 3, plot the percentage of rock (column 1 of the second table) on the x -axis and density of the moon (column 3 of the second table) on the y -axis. 7. From this graph you have plotted, estimate the percentage of rock for ea ch moon listed in the first table given that moon’s density (column 3 of first table). Write this value for the percentage of rock in column 4 of the first table.
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook. The document you are viewing contains questions related to this textbook.
Chapter 1 / Exercise 1
Physics for Scientists and Engineers
Jewett/Serway Expert Verified
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