POST-TEST THE SUN

What type of star is the Sun classified as?

• Red giant

• White dwarf

• G2 V Star

• Neutron star

What role does the Sun's gravity play in the solar system?

• It causes the planets to rotate on their axes

• It holds the solar system together

• It creates the magnetic fields of the planets

• It cools down the planets

Approximately how long ago did the Sun begin to take shape from a molecular cloud?

• 1 billion years ago

• 2 billion years ago

• 4.5 billion years ago

• 6 billion years ago

What process occurs in the Sun's core that produces energy?

• Chemical reactions

• Gravitational contraction

• Nuclear fission

• Nuclear fusion

Which layer of the Sun is less dense than the core and where energy moves outward through thermal radiation?

• Photosphere

• Chromosphere

• Radiative Zone

• Corona

In which layer of the Sun do gases "boil" outward from the core, then cool and sink back down in a continuous cycle of circulation?

• Photosphere

• Chromosphere

• Radiative Zone

• Convective Zone

Which layer of the Sun is referred to as its surface?

• Photosphere

• Chromosphere

• Radiative Zone

• Corona

Which layer of the Sun looks reddish because it gives off electromagnetic radiation in the red part of the spectrum?

• Photosphere

• Chromosphere

• Radiative Zone

• Corona

What is the wispy outermost layer of the solar atmosphere called, usually hidden by the bright light of the Sun's surface?

• Photosphere

• Chromosphere

• Radiative Zone

• Corona

Which event allows scientists to study the solar corona more effectively?

• Solar flares

• Lunar eclipses

• Solar wind bursts

• Total solar eclipses