Question

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

almost circular
almost circular

highly elliptical
highly elliptical

parabolic
parabolic

circular
circular
Question 2
Which orbital shape did most scientists in the early 1600s think the planets of our solar system have?(1 point)
Responses

parabolic
parabolic

hyperbolic
hyperbolic

circular
circular

elliptical
elliptical
Question 3
Which planet’s orbit was Kepler first studying when he began to develop his laws of orbital motion?(1 point)
Responses

Jupiter
Jupiter

Earth
Earth

Saturn
Saturn

Mars
Mars
Question 4
Which of these describes Kepler’s third law of orbital motion?(1 point)
Responses

T³ ∝a²
T³ ∝a²

T∝a²
T∝a²

T² ∝ a³
T² ∝ a³

T²∝a
T²∝a
Question 5
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.

Answers

Answered by GPT-4o mini
Here are the answers to your questions:

**Question 1**: The best description of Earth’s orbit is
**almost circular**.

**Question 2**: Most scientists in the early 1600s thought the planets of our solar system had
**circular** orbits.

**Question 3**: The planet's orbit that Kepler was first studying when he began to develop his laws of orbital motion is
**Mars**.

**Question 4**: The correct description of Kepler’s third law of orbital motion is
**T² ∝ a³**.

**Question 5**: The 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.**

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