Unit 6 Review - Investigating the Universe

Front

What is the brightest star observed from Earth?

Back

The Sun.

Front

What does a blue shift in a star's light indicate?

Back

The star is moving towards the Earth.

Front

Which quality of stars is NOT classified on a Hertzsprung-Russell diagram?

Back

Density.

Front

What color are the hottest stars?

Back

Blue.

Front

How do the characteristics of Star A and Star B compare if Star A is hotter and brighter?

Back

Star A is hotter and brighter than Star B.

Front

What is the Hertzsprung-Russell diagram used for?

Back

It classifies stars based on their brightness and temperature.

Front

What is the relationship between a star's temperature and its color?

Back

Hotter stars appear blue, while cooler stars appear red.

Front

What does the term 'luminosity' refer to in astronomy?

Back

The total amount of energy emitted by a star per second.

Front

What is the significance of the electromagnetic spectrum in astronomy?

Back

It helps in understanding the light emitted by stars and their movement.

Front

What does it mean if a star's light is red-shifted?

Back

The star is moving away from the Earth.