Astronomy Unit Review

Analyze this HR Diagram. Which group of stars is considered to have a higher than average luminosity as well as a lower than average temperature?

• Giants

• Main Sequence

• White Dwarfs

• Supergiants

Tags

NGSS.HS-ESS1-3

A collection of dust and gas where stars can form is called a...

• universe

• nebula

• black hole

• supernova

Stars are classified on the HR Diagram by...

• luminosity and brightness.

• temperature and absolute magnitude (or luminosity).

• temperature and apparent magnitude.

• temperature and distance.

Stars radiate thermal energy through space by a process called _____ where the element _____ is converted into helium.

• nuclear fusion; hydrogen

• nuclear fusion; lithium

• nuclear transfer; hydrogen

• nuclear transfer; boron

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

• Star

• Galaxy

• Nebula

• Comet

Tags

NGSS.HS-ESS1-3

Which of these observations of Barnard's star is most likely accurate?

• less bright than the sun, has a surface temperature below 3,800 K, and is red.

• less bright than the sun, has a surface temperature above 3,800 K, and is red.

• is brighter than the sun, has a surface temperature below 5,300 K, and is yellow.

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-2

Which type of star would belong to spectral class K and have the highest luminosity?

• Main-Sequence stars

• Giants

• white dwarfs

• supergiants

Tags

NGSS.HS-ESS1-3

This is a model of a galaxy a student made out of sand, each grain of sand would represent-

• comet

• black hole

• asteroid

• star

Tags

NGSS.MS-ESS1-2

Which lists the components of the universe from largest to smallest?

• galaxies, nebulae, stars, planets

• galaxies, stars, planets, nebulae

• planets, stars, galaxies, nebulae

Tags

NGSS.MS-ESS1-3

Jocelyn Bell Burnell and Antony Hewish discovered a new type of star in 1967. They found an area that was not showing visible light but would emit a radio wave every 1.33 seconds. These stars came to be known as pulsars due to their pulsating radio wave pattern. The equipment that would have been used would be tuned to which frequency on the electromagnetic spectrum?

• 2.41 × 10¹⁶ Hz

• 3.72 × 10³ Hz

• 5.34 × 10⁶ Hz

Tags

NGSS.HS-PS4-1