Reporting Category 3

Front

What type of weather is typically associated with clear, sunny skies?

Back

Clear, sunny skies are often associated with high pressure systems, indicating stable atmospheric conditions.

Front

What is the last/third quarter phase of the moon?

Back

The last/third quarter phase of the moon occurs when half of the moon is illuminated and is positioned at a 90-degree angle from the Earth and the Sun.

Front

In which stage do stars spend the majority of their lives?

Back

Stars spend the majority of their lives in the Main Sequence stage, where they fuse hydrogen into helium.

Front

What happens to a star's brightness as it moves higher on the HR diagram?

Back

As a star moves higher on the HR diagram, it becomes brighter.

Front

What is the next stage for a high mass star after the main sequence?

Back

After the main sequence, a high mass star becomes a supergiant.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

Front

What is the significance of the Main Sequence in stellar evolution?

Back

The Main Sequence is significant because it represents a stable phase where stars spend most of their lifetime fusing hydrogen into helium.

Front

What is a supergiant star?

Back

A supergiant star is a very large star that has expanded and cooled after exhausting its hydrogen fuel.

Front

What is the HR diagram?

Back

The HR diagram (Hertzsprung-Russell 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 is the difference between a red giant and a supergiant?

Back

A red giant is a star that has expanded and cooled, while a supergiant is a more massive star that has undergone significant expansion and is much larger than a red giant.