Which planet’s orbit was Kepler first studying when he began to develop his laws of orbital motion?(1 point)
Responses
Earth
Earth
Jupiter
Jupiter
Mars
Mars
Saturn
1 year ago
1 year ago
Which of these describes Kepler’s third law of orbital motion?(1 point)
Responses
T∝a2
T∝a2
T2∝a
T2∝a
T3 ∝a2
T3 ∝a2
T2 ∝ a3
1 year ago
T2 ∝ a3
1 year ago
Which statement describes Kepler’s third law of orbital motion?(1 point)
Responses
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.
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 square of orbital period is proportional to the semi-major axis.
1 year ago
The cube of orbital period is proportional to the square of the semi-major axis.
1 year ago
Which orbital shape did most scientists in the early 1600s think the planets of our solar system have?(1 point)
Responses
hyperbolic
hyperbolic
parabolic
parabolic
elliptical
elliptical
circular
1 year ago
circular
1 year ago
Which is the best description of Earth’s orbit?(1 point)
Responses
highly elliptical
highly elliptical
almost circular
almost circular
parabolic
parabolic
circular
1 year ago
almost circular
11 months ago