Stars and HR Diagrams

Front

What are the main gases that compose stars?

Back

Hydrogen & Helium

Front

What is a small, hot star near the end of its life called?

Back

White dwarf

Front

If two stars are the same size, what determines which one appears brighter?

Back

The star that is closer to the Earth will appear brighter than the star that is farther away.

Front

Which type of star is the coldest?

Back

Red Star

Front

Knowing the color of a star also tells us its __________.

Back

temperature

Front

What is the main sequence in the HR diagram?

Back

A continuous and distinctive band of stars that appears on plots of stellar color versus brightness.

Front

What does the HR diagram plot?

Back

The luminosity (brightness) of stars against their temperature (color).

Front

What type of star is found at the top right of the HR diagram?

Back

Red supergiants.

Front

What is a supernova?

Back

A powerful and luminous explosion of a star, marking the end of its life cycle.

Front

What is the significance of a star's color?

Back

It indicates the star's temperature; blue stars are hotter, while red stars are cooler.