Unit 2 - The Universe

What is the most useful unit for measuring distances within the solar system?

• the kilometer
• the astronomical unit
• the light-year
• he parsec

Scientists think the Milky Way probably is

• a nebula
• a spiral galaxy
• an elliptical galaxy
• an irregular galaxy

Tags

NGSS.MS-ESS1-2

Our nearest star neighbor, Proxima Centauri, is 4 light years away from Earth. How old is the light by the time we see it?

• 4,000 years-old
• 400 years-old
• 4 years-old
• 40 years-old

Tags

NGSS.MS-PS4-1

Two stars have the same absolute magnitude. Why does one appear brighter than the other?

• one is closer to Earth so it appears brighter
• they are the same distance from Earth so they have the same absolute magnitude
• the one that appears brighter is not covered by clouds
• one is farther away from Earth so it appears brighter

In the diagram given, what happens as we move to the left?

• Stars Get Larger
• Stars get Colder
• Stars get hotter

Tags

NGSS.HS-ESS1-3

Compared to the rest of the stars, our sun is considered...

• Extremely Large and Cold
• Small with a medium temperature
• Medium size with medium temperature

Which category is our Sun located in?

• White Dwarfs
• Supergiants
• Main Sequence
• Giants

Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?

• Betelguse
• Sirius B
• Procyon B
• Barnard's star

A, D, and E are all on the main sequence. What are they fusing in their cores?

• H into He

• H and He into Li

• He into C

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

The HR Diagram shows a relationship of a star's surface temperature and its

• color
• size
• apparent magnitude
• absolute magnitude