Question

whats the role of the suns gravity in the solar system?
a) slowly pushes the planets away from the sun
b) prevents the sun from falling into a black hole
c) keeps the planets orbiting around the sun
d) keeps planets moons in orbit
question 6 (5 points)
listen
which of the following astronomical units is closest to the distance of the earth to the sun?
a) 9.1 au
b) 9.5 au
c) 1 au

Explanation:

• For the first question: Gravity is a force of attraction. The sun's gravity pulls the planets towards it. Planets have their own forward motion (tangential velocity). The balance between the sun's gravitational pull and the planets' forward motion keeps the planets in orbit around the sun. Option A is incorrect as gravity is a pulling (attractive) force, not a pushing force. The sun is not near a black - hole, so option B is wrong. Planets' moons are mainly affected by the planets' gravity (for their orbital motion around the planets), so option D is incorrect.
• For the second question: By definition, 1 Astronomical Unit (AU) is the average distance from the Earth to the Sun.

Answer:

• First question: C) Keeps the planets orbiting around the sun
• Second question: C) 1 AU