Solar System, Stars and Galaxies Review

Scientists think that the universe will _____________________________.

• end someday
• expand forever
• eventually shrink
• expand and shrink on a regular basis

What does a star's color indicate?

• size
• age
• temperature
• shape

According to the big bang theory, the universe is about ______________________.

• 470 billion years old
• 500 billion years old
• 4.7 billion years old
• 13.7 billion years old

Tags

NGSS.HS-ESS1-2

Scientists think that the Milky Way is _______________________.

• an irregular galaxy

• an elliptical galaxy

• a spiral galaxy

• a nebula

What are the three major types of galaxies identified by Edwin Hubble?

• spiral, triangular, irregular
• spiral, elliptical, irregular
• spiral, elliptical, triangular
• triangular, elliptical, irregular

What type of star has used up all of its hydrogen and is the leftover center of an older star?

• red giant
• supernova
• white dwarf
• main-sequence

What is the distance that light travels in one year; about 9.5 trillion kilometers?

• cosmology
• black hole
• quasar
• light-year

What is a distant, star-like source of light?

• cosmology
• black hole
• quasar
• light-year

What is an object so massive and dense that not even light can escape its gravitational pull?

• main-sequence
• apparent magnitude
• black hole
• absolute magnitude

There are how many inner planets?

• 3

• 4

• 5

• 6