The sun and stars unit review

What is the size of our Sun compared to other stars?

• It is the largest known star.

• It is smaller than most other stars.

• It is an average-sized star.

• It is the smallest known star.

What determines the lifespan of a main sequence star?

• Its distance from the sun

• Its color

• Its mass

• Its size

Why do higher mass stars consume their material more quickly?

• Due to lower central temperatures caused by weaker gravitational forces

• Due to higher central temperatures caused by greater gravitational forces

• Due to the presence of more helium in their cores

• Due to slower fusion reactions

In which state of matter is the hydrogen in the Sun?

• Solid

• Liquid

• Gas

• Plasma

Does the Sun have a solid surface?

• Yes

• No, it is made of hot plasma

• Only in the core

• Only in the corona

Which layer of the sun is known as the "surface" of the sun that gives it its yellow color?

• The Core

• The Chromosphere

• The Photosphere

• The Corona

What is the function of the Sun's Radiative Zone?

• It is the surface of the sun that we can see.

• Radiates the energy produced during fusion to the outer layers.

• It is the outermost layer of the sun's atmosphere.

• Transfers heat to the outer layers in convection currents.

Which layer of the sun's atmosphere is red in color?

• The Core

• The Chromosphere

• The Photosphere

• The Corona

What is the role of the Convection Zone in the sun?

• It is where nuclear fusion occurs.

• Radiates energy to the sun's atmosphere.

• Transfers heat to the outer layers in convection currents.

• Gives the sun its yellow color.

What happens in the core of the Sun that ultimately generates the Sun's light and heat?

• Plasma

• Helium

• A fusion reaction

• Electricity