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Physics, Science
12th -
University
Kepler's Laws of Planetary Motion
25 questions
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- 1. Multiple Choice
Planets orbit the Sun in a shape called a(n)
circle
ellipse
focus
perihelion
- 2. Multiple Choice
An ellipse is drawn around two points called:
aphelionperihelionfociaxis - 3. Multiple ChoiceWhen a planet orbits the Sun, one of the foci of the elliptical orbit isthe axisthe perihelionthe centerthe Sun
- 4. Multiple Choice
What has an eccentricity of zero?
#1: A perfect circle
#2: A slightly elliptical path
#3: A very elliptical path
All elliptical paths
- 5. Multiple Choice
What has the greatest eccentricity of its orbital path?
#1: A perfect circle
#2: A slightly elliptical path
#3: A very elliptical path
All elliptical paths have eccentricities of zero (e = 0)
- 6. Multiple Choice
The value of eccentricity can range from ________ to ________.
0.1 to 0.9
-1 to 0
0 to 100
0 to 1
- 7. Multiple ChoiceWhere is the planet moving fasterPosition A to BPosition B to CPosition H to IPosition I to J
- 8. Multiple ChoiceWhat is true about the area between points A, B and the Sun, and the area between points H, I and the Sun?The area between A, B and the Sun is the largest.The area between H, I and the Sun is the largestBoth areas are equal in sizeThere is not enough information to determine the areas
- 9. Multiple Choice
Kepler's 2nd Law deals with:
the shape of the planets' orbitsthe speed/area the planet travelsthe length of time it takes the planet to orbit the sun - 10. Multiple ChoiceA planet moves __________ when it is farthest from the sun.fasterslower
- 11. Multiple Choice
The diagram below shows a moon revolving around a planet in an elliptical orbit. At which position is the moon traveling fastest?
location 1
location 2
location 3
location 4
- 12. Multiple Choice
The diagram below shows a moon revolving around a planet in an elliptical orbit. At which position is the moon traveling slowest?
location 1
location 2
location 3
location 4
- 13. Multiple Choice
Which planet will take the least amount of time to revolve around the Sun?
Mercury
Venus
Earth
Mars
- 14. Multiple Choice
Which planet will take the most amount of time to revolve around the Sun?
Mercury
Venus
Earth
Mars
- 15. Multiple Choice
Which statement best describes Kepler’s 2nd Law of Planetary Motion?
Planets revolve around the sun over equal areas in equal time intervals.
Planetary orbits are in the shape of an ellipse.
A planet’s orbital period is proportionate to its distance from the sun.
- 16. Multiple ChoiceThe "Law of Harmonies" is which of Kepler's Laws?1st2nd3rd4th
- 17. Multiple Choice
Kepler’s 2nd Law states that the area swept out by a planet’s motion will be the same regardless of where it is in its orbit. A comet moves much faster when it is closer to the Sun than when it is further out from the Sun. What is the primary cause in the change of the comet’s orbital velocity?
Jupiter's gravitational field.
The sun's solar wind.
The sun's gravitational field.
Saturn's magnetic field.
- 18. Multiple Choice
According to Kepler's 3rd law, the square of the time it takes for an object to orbit, T, is directly related to the cube of the distance, r, between the object and what it is orbiting.
What this means is that if a satellite moves away from what it is orbiting,the area it covers during its orbit is changing per unit of time
it must be speeding up in its linear speed
it is slowing down as its radius (distance) is increasing
the shorter the orbital period is. - 19. Multiple Choice
Kepler's 3rd law tell us that __ would be dependent on __.
orbital period ; distance
distance ; orbital period
- 20. Multiple Choice
Kepler’s 3rd law states the square of the orbital period is proportional to the cube of the orbital radius. (T2=D3)
If a planet's orbital radius is doubled, what happens to the length of a year on that planet?It will become twice as longIt will become about 8 times as longIt will become 2.8 times as longIt will remain the same - 21. Multiple Choice
SOLVE USING Kepler’s 3rd Law: (T2=D3)
A planet orbits the Sun (or any star) in 4.4 Earth years. What is its distance from the Sun (star) in AU?2.1 AU
2.7 AU
3.2 AU
3.9 AU
- 22. Multiple Choice
SOLVE USING Kepler’s 3rd Law: (T2=D3) *Same problem as prior...
A planet orbits the Sun (or any star) in 4.4 Earth years. What is its distance from the Sun (star) in MILES?1.9 x 108 miles
2.2 x 108 miles
2.5 x 108 miles
2.9 x 108 miles
- 23. Multiple Choice
SOLVE USING Kepler’s 3rd Law: (T2=D3) *Same problem as prior...
A planet orbits the Sun at a distance of 7.8 AU. What is its orbital period (time) in Earth YEARS?21.8 Earth Years
20.2 Earth Years
18.8 Earth Years
11.4 Earth Years
- 24. Multiple ChoiceThis model best illustrates which of the following laws?Kepler's 2nd Law of MotionNewton's 1st Law of MotionKepler's 3rd Law of MotionNewton's Law of Universal Gravitation
- 25. Multiple ChoiceWhat did Kepler discover about planets and their orbital speed?Planets closest to the Sun will orbit with the fastest orbital speed.Planets with the greatest mass will orbit the Sun with the fastest orbital speed.Planets furthest from the Sun will orbit with the fastest orbital speed.Planets with the least mass will orbit the Sun with the fastest orbital speed.
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