According to Kepler's second law, the factor that is constant as a line between a planet and the sun sweeps out two equal areas in equal times is the amount of time. This law states that a planet sweeps out equal areas in equal times, meaning that the time taken to sweep out those areas is constant, while the speed of the planet may vary depending on its distance from the sun.
According to Kepler’s second law, which factor is constant as a line between a planet and the sun sweeps out two equal areas at different places as it moves along its orbit?(1 point)
Responses
the planet’s speed
the planet’s speed
the distance from the sun to the planet
the distance from the sun to the planet
the distance the planet moves
the distance the planet moves
the amount of time
11 answers
Which does Kepler’s first law state about the orbits of planets in our solar system?(1 point)
Responses
The major axis is the same length as the minor axis.
The major axis is the same length as the minor axis.
Their orbits are all circular.
Their orbits are all circular.
They have elliptical orbits.
They have elliptical orbits.
Their distance from the sun is a constant.
Their distance from the sun is a constant.
Responses
The major axis is the same length as the minor axis.
The major axis is the same length as the minor axis.
Their orbits are all circular.
Their orbits are all circular.
They have elliptical orbits.
They have elliptical orbits.
Their distance from the sun is a constant.
Their distance from the sun is a constant.
Kepler's first law states that they have elliptical orbits. This law indicates that the orbits of the planets are not perfect circles, but rather ellipses, with the Sun located at one of the foci of the ellipse.
The mass of an object decreases by one-half. What happens to the gravitational force between the object and a second object whose mass stays the same?(1 point)
Responses
The gravitational force decreases to one-fourth.
The gravitational force decreases to one-fourth.
The gravitational force stays the same, as long as the objects remain on Earth.
The gravitational force stays the same, as long as the objects remain on Earth.
The gravitational force decreases by one-half.
The gravitational force decreases by one-half.
The gravitational force doubles.
Responses
The gravitational force decreases to one-fourth.
The gravitational force decreases to one-fourth.
The gravitational force stays the same, as long as the objects remain on Earth.
The gravitational force stays the same, as long as the objects remain on Earth.
The gravitational force decreases by one-half.
The gravitational force decreases by one-half.
The gravitational force doubles.
The gravitational force between two objects is described by Newton's law of universal gravitation, which states that the force is directly proportional to the product of their masses. If the mass of one object decreases by one-half, the gravitational force between the two objects will also decrease to one-half.
Therefore, the correct response is: The gravitational force decreases by one-half.
Which of the four inner planets has the least eccentric orbit around the sun?(1 point)
Responses
Mars
Mars
Mercury
Mercury
Venus
Venus
Earth
Responses
Mars
Mars
Mercury
Mercury
Venus
Venus
Earth
Among the four inner planets (Mercury, Venus, Earth, and Mars), Venus has the least eccentric orbit around the Sun. Its orbit is nearly circular, making its eccentricity lower than that of the other inner planets.
Observing a planetoid orbiting far from the sun, astronomers notice that the object slows down in its orbit in a way they did not expect. Which is a reasonable conclusion?(1 point)
Responses
The planetoid is slowing due to friction.
The planetoid is slowing due to friction.
The planetoid is beginning to change its type of orbit.
The planetoid is beginning to change its type of orbit.
The planetoid is being attracted toward another massive object.
The planetoid is being attracted toward another massive object.
The planetoid is being repelled by something.
Responses
The planetoid is slowing due to friction.
The planetoid is slowing due to friction.
The planetoid is beginning to change its type of orbit.
The planetoid is beginning to change its type of orbit.
The planetoid is being attracted toward another massive object.
The planetoid is being attracted toward another massive object.
The planetoid is being repelled by something.
A reasonable conclusion regarding the unexpected slowing of the planetoid in its orbit is: The planetoid is being attracted toward another massive object. This could indicate that the planetoid is experiencing gravitational effects from another body, which can alter its velocity and trajectory in orbit.
Which evidence can be used to classify a nebula? Select the two correct answers.(1 point)
Responses
distance from Earth
distance from Earth
shape
shape
interaction with light
interaction with light
location in the sky
Responses
distance from Earth
distance from Earth
shape
shape
interaction with light
interaction with light
location in the sky
The two correct answers that can be used to classify a nebula are:
- Shape
- Interaction with light
These factors help astronomers categorize nebulae into different types, such as emission nebulae, reflection nebulae, and planetary nebulae, based on how they appear and interact with light.