Which planet’s orbit was Kepler first studying when he began to develop his laws of orbital motion?(1 point)
Responses
1 year ago
1 year ago
Which orbital shape did most scientists in the early 1600s think the planets of our solar system have?(1 point)
1 year ago
Most scientists in the early 1600s thought that the planets of our solar system have circular orbits.
1 year ago
Which of these describes Kepler’s third law of orbital motion?(1 point)
Responses
T∝a2T∝a2
T3 ∝a2T3 ∝a2
T2 ∝ a3 T2 ∝ a3
T2∝a
1 year ago
The correct answer is: T2 ∝ a3
1 year ago
Which is the best description of Earth’s orbit?(1 point)
Responses
1 year ago
The best description of Earth's orbit is roughly elliptical, with the Sun at one of the foci.
1 year ago
parabolic
parabolic
circular
circular
almost circular
almost circular
highly elliptical
1 year ago
The correct answer is: almost circular
1 year ago
Which statement describes Kepler’s third law of orbital motion?(1 point)
Responses
The square of orbital period is proportional to the semi-major axis.
The square of orbital period is proportional to the semi-major axis.
The orbital period is proportional to the square of the semi-major axis.
The orbital period is proportional to the square of the semi-major axis.
The cube of orbital period is proportional to the square of the semi-major axis.
The cube of orbital period is proportional to the square of the semi-major axis.
The square of orbital period is proportional to the cube of the semi-major axis.
The square of orbital period is proportional to the cube of the semi-major axis.
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1 year ago