Question

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

Earth
Earth

Mars
Mars

Jupiter
Jupiter

Saturn
Saturn
GPT 3.5
Mars
Which is the best description of Earth’s orbit?(1 point)
Responses

circular
circular

parabolic
parabolic

almost circular
almost circular

highly elliptical
highly elliptical
GPT 3.5
almost circular
Which orbital shape did most scientists in the early 1600s think the planets of our solar system have?(1 point)
Responses

hyperbolic
hyperbolic

elliptical
elliptical

circular
circular

parabolic
GPT 3.5
circular
Which statement describes Kepler’s third law of orbital motion?(1 point)
Responses

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 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 semi-major axis.
GPT 3.5
The square of orbital period is proportional to the cube of the semi-major axis.