Sun and stars

Why does the sun appear bigger than all other stars?

• It is the biggest star in the universe.

• It is Earth's closest star.

• All other stars are much smaller than our star.

• The sun is the only star we can see.

What is a star?

• collection of dust that gives off heat and light

• huge ball of hot, glowing gas that gives off heat and light

• ball of electricity that gives off heat and light

• a bright burning planet that gives off heat and light

Which stars are very hot?

• red

• blue

• yellow

Which stars are cooler?

• red

• blue

• yellow

A ________ is a group of stars that form a picture.

• constellation
• universe
• world
• Polaris

Energy is produced within a star's core by the process of

• insolation
• conduction
• nuclear fusion
• radioactive decay

During a total solar eclipse one might view

• sun spots
• the sun's corona
• the sun's solar winds 
• nothing of the sun, since it is totally blocked by the moon 

This is the inner-most layer of the sun, where nuclear fusion happens. 

• core
• corona
• photosphere
• chromosphere

This layer contains currents of rising and sinking gas that carry energy to the surface.

• radiative zone
• corona
• chromosphere
• convective zone

Innermost layer of the sun's atmosphere, produces the sun's light.

• chromosphere
• corona
• photosphere
• radiative zone