Unit 5 Stars and Classification

Front

What is the part of the Sun that is visible to us and emits most of the visible light?

Back

The photosphere.

Front

What process involves two light nuclei combining to produce a more massive nucleus?

Back

Fusion.

Front

What are the characteristics of a blue giant star?

Back

High temperature, relatively large, and luminous.

Front

What is the approximate duration of the sunspot cycle on the Sun?

Back

11 years.

Front

What nuclear reaction is responsible for the burning process inside a star?

Back

Fusion of hydrogen into helium.

Front

Define the photosphere in the context of the Sun.

Back

The photosphere is the visible surface of the Sun that emits most of the Sun's light.

Front

What is stellar fusion and why is it important?

Back

Stellar fusion is the process by which stars generate energy by fusing lighter elements into heavier ones, crucial for a star's lifecycle.

Front

What is the significance of sunspots in solar studies?

Back

Sunspots are indicators of solar activity and can affect space weather and climate on Earth.

Front

How does the temperature of a blue giant star compare to that of a red dwarf star?

Back

A blue giant star has a much higher temperature than a red dwarf star.

Front

What is the primary fuel for fusion in stars like the Sun?

Back

Hydrogen.