Astronomy Mid-Unit Test

What occurs during nuclear fusion in the sun?

• Hydrogen turns into helium.

• Helium turns into hydrogen.

• Oxygen turns into carbon dioxide.

• Carbon dioxide turns into oxygen.

Which star is closest to earth?

• Polaris

• the sun

• the Milky Way

• Sirius

What is the innermost layer of the sun’s atmosphere called?

• troposphere

• corona

• photosphere

• chromosphere

Which layer of the sun’s atmosphere is visible during a total solar eclipse?

• photosphere

• chromosphere

• corona

• solar flares

Climate change on earth is thought to be affected by which of the following solar phenomena?

• solar eclipses

• solar flares

• solar prominences

• sunspots

Which of the following solar phenomena causes magnetic storms?

• solar heat

• solar prominences

• solar flares

• sunspots

At times during a month, there is no moon visible from earth. Which phase of the moon is this?

• new moon

• first quarter moon

• full moon

• third quarter moon

During which phase of the moon is it possible to experience a lunar eclipse?

• new moon

• first quarter moon

• full moon

• third quarter moon

During which phase of the moon is it possible to experience a solar eclipse?

• new moon

• first quarter moon

• first quarter moon

• third quarter moon

A certain location on earth experiences a partial solar eclipse. Which statement is true?

• The location is in the umbra of the moon’s shadow.

• The location is in the penumbra of the moon’s shadow.

• The location is in the umbra of earth’s shadow.

• The location is in the penumbra of earth’s shadow.