Gravitational Lab

In: Science

Submitted By Mcgraw481
Words 578
Pages 3
Name_______________________________

My Solar System Lab Worksheet

1. Go to: http://phet.colorado.edu/en/simulation/my-solar-system
2. Select RUN
3. Move the slider all the way to accurate, click on the tape measure and the grid.
4. Click the radio button for 4 objects and run the simulation until the purple planet (body 2) has made one complete orbit (one year).
5. After the first orbit (year), turn off the traces (show traces box) and watch another orbit (year) of the purple planet (body 2).
Question One:
Is blue moon (body 3) circling the yellow sun (body 1) or the purple planet (body 2)? Explain your answer.
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6. Increase the mass of the sun (body 1) to 400 and allow the simulation to run for one complete orbit of the purple planet (body 2).
7. Decrease the mass of the sun (body 1) to 175 and allow the simulation to run for one complete orbit of the purple planet (body 2). (~90 seconds)
Question Two:
How do the orbits of the planets change when the mass of the sun is increased or decreased? Why? Explain your answer.
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Question Three:
Why does the sun (body 1) follow a circular path? How does the path change as its mass changes? Why? Explain your answer.
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____________________________________________________________…...

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