Stars & Constellations Test

Front

What is the HR Diagram?

Back

The Hertzsprung-Russell Diagram (HR Diagram) is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What happens to a star's luminosity as its size increases?

Back

As the size of a star increases, its luminosity also increases.

Front

What is Absolute (magnitude) brightness?

Back

Absolute brightness is the brightness of a star at a standard distance of 10 parsecs, allowing for a comparison of the true brightness of stars.

Front

What are the characteristics of blue giants?

Back

Blue giants are hot and bright stars, typically much larger than the Sun.

Front

What will happen to the Sun in the future?

Back

The Sun will eventually become a red giant and then a white dwarf.

Front

What type of stars can become black holes?

Back

Only the largest supermassive stars at the end of their life cycles can become black holes.

Front

What is the difference between apparent brightness and absolute brightness?

Back

Apparent brightness is how bright a star appears from Earth, while absolute brightness is the intrinsic brightness of a star at a standard distance.

Front

What is a red giant?

Back

A red giant is a late stage in the life cycle of a star, characterized by a large size and a reddish color due to cooler surface temperatures.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel and shed its outer layers.

Front

What is a neutron star?

Back

A neutron star is the collapsed core of a massive star that has undergone a supernova explosion, composed mostly of neutrons.