Ch. 22 Lesson 4 Quiz Review

What are galaxies?

• star forming regions

• leftover gas and dust from a dying star

• a huge collection of stars

• groups of stars that make a pattern in space

Tags

NGSS.MS-ESS1-2

Each galaxy can contain hundreds of billions of _____________.

• black holes

• stars

• planets

• nebulae

Any matter that we cannot see is called _____________ matter.

• dark

• invisible

• electromagnetic

• radiant

Scientists hypothesize that more than ______________ percent of the universe's mass is dark matter.

• 90

• 100

• 10

• 50

Which is not a type of galaxy?

• irregular

• elliptical

• spiral

• pinwheel

What is the name of our galaxy?

• Andromeda Galaxy

• Sombrero Galaxy

• Milky Way Galaxy

• Pinwheel Galaxy

Tags

NGSS.MS-ESS1-2

What type of galaxy do we live in?

• spiral

• irregular

• elliptical

Tags

NGSS.MS-ESS1-2

At the center of a spiral galaxy is a thicker region called the _______________.

• black hole

• central bulge

• central disk

• constellation

Elliptical galaxies do not have an internal structure at all, but are more of a __________________ shape like a basketball or football.

• sphereical

• irregular

• spiral

• flat

Scientists say that elliptical galaxies are "older" because they have a higher percentage of ______________ stars.

• younger blue

• older red

• younger yellow

• older white