A line between a planet and the sun sweeps out two equal areas at different places as it moves along its orbit. Which factor remains constant as this happens?(1 point)
Responses
the planet’s speed as it sweeps out the areas
the planet’s speed as it sweeps out the areas
the time required to sweep out the areas
the time required to sweep out the areas
the distance the planet moves along its orbit while it sweeps out the area
the distance the planet moves along its orbit while it sweeps out the area
the distance from the sun to the planet while it sweeps out the areas
the distance from the sun to the planet while it sweeps out the areas
Which statements about the geocentric model are false? Select the two correct answers.(1 point)
Responses
It explains why Mars appears to move backward for a few months approximately every two years.
It explains why Mars appears to move backward for a few months approximately every two years.
It shows the Sun at the center of the solar system.
It shows the Sun at the center of the solar system.
It shows Earth at the center of the solar system.
It shows Earth at the center of the solar system.
It shows the orbits of the planets as circular.
It shows the Sun at the center of the solar system.
It shows the orbits of the planets as circular.
Based on Kepler's observations about planetary motion, what is the relationship between a planet's orbital velocity and its distance from the sun?(1 point)
Responses
Distance has no effect on orbital velocity.
Distance has no effect on orbital velocity.
As distance is cut in half, orbital velocity decreases.
As distance is cut in half, orbital velocity decreases.
The greater the distance, the greater the orbital velocity.
The greater the distance, the greater the orbital velocity.
The greater the distance, the slower the orbital velocity.
The greater the distance, the slower the orbital velocity.
Which did Kepler notice about planetary motion that caused him to propose Kepler’s first law of orbital motion?(1 point)
Responses
The distance between Mars and the sun is constant.
The distance between Mars and the sun is constant.
Most planets have highly elliptical orbits.
Most planets have highly elliptical orbits.
The planets have circular orbits.
The planets have circular orbits.
The distance to the sun varies.