Which of these can happen to objects in the solar system that do not have the momentum to maintain a stable orbit around the sun? Select the two correct answers.(1 point)
Responses
They can spiral into the sun.
They can spiral into the sun.
They can follow erratic orbits that take on different shapes.
They can follow erratic orbits that take on different shapes.
They can fall into circular orbits.
They can fall into circular orbits.
They can swing around the sun and be ejected outward into space.
They can spiral into the sun and they can swing around the sun and be ejected outward into space.
Where is the sun located on Earth’s elliptical orbit?(1 point)
Responses
at the aphelium
at the aphelium
at the center of the two foci
at the center of the two foci
at the perihelium
at the perihelium
at a focus
at a focus
How does Kepler’s third law compare the periods and orbital radii of two planets within a solar system?(1 point)
Responses
The square of the ratio of the periods equals the cube of the ratio of the radii.
The square of the ratio of the periods equals the cube of the ratio of the radii.
The cube of the ratio of the periods equals the square of the ratio of the radii.
The cube of the ratio of the periods equals the square of the ratio of the radii.
The ratio of the periods equals the square of the ratio of the radii.
The ratio of the periods equals the square of the ratio of the radii.
The square of the ratio of the periods equals the ratio of the radii.
The square of the ratio of the periods equals the cube of the ratio of the radii.
Which statement summarizes Kepler's First Law of Planetary Motion?(1 point)
Responses
Planets in the solar system revolve around the sun.
Planets in the solar system revolve around the sun.
Planets closest to the sun move faster in their orbits than those farther away.
Planets closest to the sun move faster in their orbits than those farther away.
Planets revolve around the sun in elliptical orbits.
Planets revolve around the sun in elliptical orbits.
Planets move fastest while Earth is at perihelion.
Planets revolve around the sun in elliptical orbits.
Which statements about geocentric model and heliocentric model are true? Select the two correct answers.(1 point)
Responses
They both are models of the solar system.
They both are models of the solar system.
They both show the position of Earth relative to the Sun.
They both show the position of Earth relative to the Sun.
They both show Earth at the center of the solar system.
They both show Earth at the center of the solar system.
They both show the Sun at the center of the solar system
They both are models of the solar system and they both show Earth at the center of the solar system.
Why was the geocentric model of the solar system accepted by scientists for many years? Select the two correct answers.(1 point)
Responses
The model accurately predicted the movements of the planets.
The model accurately predicted the movements of the planets.
Observations with telescopes confirmed the predictions made using the model.
Observations with telescopes confirmed the predictions made using the model.
The model described the solar system correctly.
The model described the solar system correctly.
Suitable technology was not available to disprove the model.