You will have just over 30 seconds to answer each clicker question.

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You will have just over 30 seconds to answer each
clicker question.
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Activity 11, 2Which ellipse has the greatest
eccentricity?Which has an eccentricity of
zero?Which ellipse is most like Earths orbit?

1. A D B
2. A D D
3. C D B
4. C D D
5. D C B
6. D C D

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Activity 11, 3 Which orbits in Figure 3 are
impossible?

1. None of them
2. A
3. B
4. C
5. D
6. A and C
7. A and D
8. A, C and D
9. C and D

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Activity 11, 5 Rate the positions in order of
the speed of the planet at each position, from
highest speed to lowest.

1. B A E GD F C
2. C F GD E A B
3. E ADG F BC
4. BC F ADG E
5. All have the same speed.

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Now answer questions 1-4 on the screenyoull
enter your answers using clickers later.
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1. Orbital Period and Distance activity Which of
the two planets will complete and orbit around
the central star in the least amount of time?

1. Moto (massive, close)
2. Spec (tiny, far)
3. Both take the same time

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2. If Moto and Spec switched positions, which
planet would complete an orbit in the shortest
amount of time?

1. Spec (tiny, close)
2. Moto (massive, far)
3. Both take the same time

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3. What would Motos orbital period do if it
moved farther away from the central star?

1. Increase
2. Decrease
3. Stay the same

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4. Imagine Moto and Spec orbited the central star
at the same distance and never collided (like
Jupiter and some asteroids do). Moto and Spec
would then have

1. Different orbital periods
2. Same orbital periods

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Now for some stand-alone questions on Newtons
Laws.
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Which of the following is NOT a rewording of one
of Newtons Laws?

1. Every force has an equal and opposite reaction
   force.
2. An objects acceleration is the overall force on
   it divided by its mass.
3. If an object feels no overall force, it remains
   at rest.
4. An object moving at constant velocity feels no
   overall force.

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Two identical spacecraft are accelerated by
rockets. The first rocket fires with a force
four times greater than the second. The
acceleration of the first rocket is how many
times as large as the acceleration of the second?

1. ¼
2. 4 times
3. ½
4. 2 times
5. None of the above