Which statement describes Kepler’s third law of orbital motion?(1 point)

The cube of orbital period is proportional to the square of the semi-major axis.

Which is the best description of Earth’s orbit?(1 point)

Responses

highly elliptical
highly elliptical

circular
circular

parabolic
parabolic

almost circular

almost circular

Which planet’s orbit was Kepler first studying when he began to develop his laws of orbital motion?(1 point)

Responses

Mars
Mars

Saturn
Saturn

Earth
Earth

Jupiter

Mars

Which of these describes Kepler’s third law of orbital motion?(1 point)

Responses

T2∝a
T2∝a

T2 ∝ a3
T2 ∝ a3

T∝a2
T∝a2

T3 ∝a2

T2∝a3

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

circular

The correct statement that describes Kepler's third law of orbital motion is: "The square of orbital period is proportional to the cube of the semi-major axis."