Part II: Review Test on the Origin of the Solar System

1. What is the study of the origin and fate of the universe called?

• Astronomy

• Cosmology

• Astrology

Which of the following is NOT part of the universe’s basic composition?

• Water

• Stars

• Dust clouds

What does the Big Bang theory suggest about the universe?

• It's shrinking

• It's expanding

• It’s stationary

What happens to matter as the universe expands, according to the Big Bang theory?

• It dilutes

• It becomes denser

• It turns into gas

Which theory states that new matter is continuously created?

• Big Bang

• Steady-State

• Heliocentric

Why might scientists still debate between cosmological theories?

• The universe never changes

• Telescopes aren’t strong enough

• We can’t observe the universe’s full history directly

What keeps the solar system gravitationally bound together?

• Planets

• The Sun

• The Moon

Which group contains the most massive planets?

• Gas giants

• Terrestrial

• Dwarf planets

What distinguishes the inner planets from the outer ones?

• They are larger

• They are denser

• They are gaseous

Which of the following is not part of the solar system?

• Moons

• Stars outside the solar system

• Asteroids