Main Sequence Stars

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

• Extremely Large and Cold

• Extremely small with a medium temperature

• Medium size with a medium temperature

• Big Giant Star

Use the Hertzsprung Russell Diagram to answer the following question.  Which of these observations of Tau Ceti is most likely accurate? 

• Tau Ceti is less bright than the Sun, has a surface temperature above 5,000 ^oC, and is red orange.

• Tau Ceti is brighter than the Sun, has a surface temperature below 5,000 ^oC, and is red orange.

• Tau Ceti is brighter than the Sun, has a surface temperature below  5,000 ^oC, and is yellow.

• Tau Ceti is less bright than the Sun, has a surface temperature above 5,000 ^oC, and is yellow

Main sequence stars are _____

• average stars

• supergiant stars

• dwarf stars

• Invisible stars

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

A main sequence star becomes a giant when it runs out of hydrogen fuel

• True

• False

• Maybe

Tags

NGSS.HS-ESS1-1

The heaviest element that could be produced by nuclear fusion in stars is ______

• Hydrogen

• Carbon

• Iron

• Magnesium

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Which star is considered a Main Sequence Star?

• A

• B

• C

• D

Tags

NGSS.HS-ESS1-1

On the H-R diagram, the Sun is a _____

• Main Sequence star

• Red Giant

• White Dwarf

• Blue Giant

Tags

NGSS.HS-ESS1-1

True or FalseThe Earth's Sun is classified as a main sequence star

• True

• False

Tags

NGSS.HS-ESS1-3

Use the Hertzsprung-Russell Diagram to answer the following question.  What is Barnard's Star classified as?

• Dim Main Sequence Star

• Bright white dwarf star

• Bright Supergiant Star

• Dim white dwarf star

Which of the following best describes a star?  A star is a celestial body ---

• composed of rock and metal with a very high density

• that is too big to be an asteroid, but too small to be a planet.

• that rotates on an axis and revolves around the Sun

• composed of gases that emit light due to nuclear reactions