PRE-TEST THE SUN

What is the innermost layer of the Sun called?

• Photosphere

• Chromosphere

• Core

• Corona

What is the Sun primarily composed of?

• Oxygen and nitrogen

• Hydrogen and helium

• Carbon and oxygen

• Iron and nickel

Which part of the Sun is visible during a solar eclipse?

• Core

• Radiative Zone

• Corona

• Convective Zone

What process generates energy in the core of the Sun?

• Nuclear fission

• Chemical reactions

• Nuclear fusion

• Gravitational contraction

Approximately how old is the Sun?

• 1 billion years

• 2.5 billion years

• 4.6 billion years

• 10 billion years

What are dark, cooler areas on the Sun’s surface called?

• Solar flares

• Prominences

• Sunspots

• Coronal holes

Which element is most abundant in the Sun?

• Helium

• Hydrogen

• Oxygen

• Carbon

What is the Sun classified as in terms of star type?

• Red dwarf

• White dwarf

• Yellow dwarf

• Red giant

How does the Sun’s energy reach the Earth?

• Convection

• Conduction

• Radiation

• Reflection

What is the Sun’s photosphere primarily made of?

• Plasma

• Solid matter

• Liquid matter

• Gas