DLD week 4

The ancient Greeks named the Milky Way after comparing it to

• a Greek god.

• the candy bar.

• a milky white river.

• an ancient galaxy that existed a long time ago.

The Milky Way measures ____ light years in length.

• 26,000

• 1 million

• 1000

• 100 thousand

Our Sun and solar system lies within the ____ arm of the Milky Way galaxy.

• Cygnus

• Perseus

• Sagittarius

• Orion

The Sun is the biggest star in the sky.

• True

• False

Why do other stars appear so much smaller than the sun?

• They are really close.

• They are so far away.

• They are tiny stars.

What kind of galaxy is this?

• Ring

• Spiral

• Irregular

______ is a force that causes dust particles to stick together in a nebula.

• nuclear fusion
• gravity
• hydrogen
• iron

Which of the following correctly places these in order from LARGEST to SMALLEST?

• galaxy -- local group/cluster -- planet -- solar system -- universe

• universe -- local group/cluster -- galaxy -- solar system -- planet

• planet -- solar system -- galaxy -- local group/cluster -- universe

• universe -- galaxy -- solar system -- local group/cluster -- planet

A Group of stars, and or star systems, star clusters, dust and gas held together by gravity is known as:

• Universe

• Galaxy

• Solar System

• Planet

An explosion that occurs at the end of a stars life cycle is known as:

• Superior Star

• White Dwarf

• Supernova

• Neutron star