Chapter 22A

The sun is approximately ____ times the diameter of the Earth. 

• 109

• 93

• 1,000,000

• 25

The sun is about ___ million miles from earth.

• 109

• 93

• 1 billion, gillion

• 250

About 93% of the energy leaving the sun is in the form of light or electromagnetic waves (including _____ ).

Our eyes mostly detect ____ light from the sun, but our brain combines these to make the sun appear yellow or orange

• orange and yellow

• purple and green

• black

• green and red

The sun is mostly composed of ___.

It is thought that the heat and pressure of the sun causes nuclear ___ to combine hydrogen into helium

• fusion

• fission

• bombs

• molecules

The ___ of the sun is where nuclear fusion is thought to happen.  It is incredibly dense and hot (27,000,000 F)

• core

• photosphere

• chromosphere

• corona

• solar wind

The surface of the sun is called the ___. (10,000 o F)

• core

• photosphere

• chromosphere

• corona

• solar wind

photosphere is the ___. – it has particles too energetic to stay on the surface of the sun. ( 36,000o F )

• core

• photosphere

• chromosphere

• corona

• solar wind

The ___ represents the upper atmosphere of the sun (2,000,000 o F)

• core

• photosphere

• chromosphere

• corona

• solar wind