Review Unit 4 Structure of Stars Sun

Front

What is the convection zone of the Sun?

Back

The convection zone is the outer layer of the Sun's interior where hot gas rises to the surface and cooler gas sinks back down toward the core.

Front

Which type of star has the highest temperature?

Back

Blue-white stars are the hottest type of stars.

Front

What two properties are plotted on the HR Diagram?

Back

The HR Diagram plots stars based on their brightness (luminosity) and temperature.

Front

What is the role of the convection zone in the Sun?

Back

The convection zone facilitates the movement of hot gases upward and cooler gases downward, helping to transfer energy to the surface.

Front

Where are sunspots located on the Sun?

Back

Sunspots are located in the photosphere, which is the visible surface layer of the Sun.

Front

What is the photosphere?

Back

The photosphere is the layer of the Sun that emits light and is where sunspots occur.

Front

Define the core of the Sun.

Back

The core is the innermost layer of the Sun where nuclear fusion occurs, producing energy.

Front

What is the radiative zone?

Back

The radiative zone is the layer of the Sun where energy is transferred outward by radiation, taking a long time to pass through.

Front

Explain the significance of the HR Diagram in astronomy.

Back

The HR Diagram helps astronomers classify stars and understand their evolution based on their luminosity and temperature.

Front

What are sunspots?

Back

Sunspots are temporary phenomena on the photosphere that appear as spots darker than the surrounding areas due to lower temperatures.