Lab 5 PhET Gravity and Orbits
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School
Arkansas Tech University *
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Course
3053
Subject
Astronomy
Date
Dec 6, 2023
Type
docx
Pages
4
Uploaded by HighnessHeatLapwing70
PhET – Gravity and Orbits
Part 1 Directions:
1.
Choose “Model”.
2.
Start with the top option with the Sun and Earth and select all check
boxes.
3.
Click play
and describe what you see.
(1 point)
4.
Click restart
recheck the boxes and change either the planet’s mass, the star’s mass or both.
Circle what you changed (star’s mass greater or smaller
- planet’s mass greater or smaller).
What happened to the orbit?
(2 points)
5.
Click restart
recheck the boxes and change either the planet’s mass, the star’s mass or both.
Circle what you changed (star’s mass greater or smaller
- planet’s mass greater or smaller).
What happened to the orbit?
(2 points)
6.
Click restart
recheck the boxes and change either the planet’s mass, the star’s mass or both.
Circle what you changed (star’s mass greater or smaller
- planet’s mass greater or smaller).
What happened to the orbit?
(1 point)
PhET Gravity and Orbits html5
PhET – Gravity and Orbits
7.
Were you able to have the planet leave the orbit of the star? What changed?(star’s mass greater
or smaller
- planet’s mass greater or smaller)
(1 point)
8.
Were you able to have the planet crash into the star? Which scenarios? (star’s mass greater or
smaller
- planet’s mass greater or smaller)
(1 point)
9.
If you answered “NO” to 7 or 8, play with the sim until you can answer “YES” to both. What
changed? (star’s mass greater or smaller
- planet’s mass greater or smaller)
(1 point)
10.Click restart
. Recheck the boxes and add a moon
. Click play
. What
happened to the planet’s orbit? What does the moon’s orbit look like?
(1 point)
11.Play with these two selected. Change the masses and describe what you see happen.
(1 point)
PhET – Gravity and Orbits
Part 2 Directions:
1.
Choose “To Scale”
2.
Start with the top option with the Sun and Earth and select all check
boxes.
3.
Click play
and describe what you see.
(1 point)
4.
Click restart
recheck the boxes and change either the earth’s mass, the sun’s mass or both.
Circle what you changed (sun’s mass greater or smaller
- earth’s mass greater or smaller). What
happened to the orbit?
(2 points)
5.
Click restart
and select
and the Sun, Earth, and Moon option
. Click play
and allow 365 days to pass. Describe what happened to the
planet and the moon’s orbit.
(1 point)
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PhET – Gravity and Orbits
6.
In any of the sims, what happens when you turn gravity off and hit play?
(1 point)
7.
With the Earth and Satellite option selected
, what happens to the
orbit when you change the satellite mass?
When you change the planet’s mass?
(1 point)
8.
In all the sims, what happens to the planet as things go around it? (Hint: make sure all boxes are
checked!)
(1 point)
Summary
(2 points)
Write a short summary for this lab, including what you learned doing the activities.
AA31 Labs