The Sun

Sun is a giant ball of ______ and _______.

• plasma

• solar flares

• wind

• hot gases

Temperatures reach as high as ____ degrees Fahrenheit (2 million K) in the corona.

• 3.6 million

• 1 million

• 10,000

• 100,000

The _____ is the single largest part of the Sun's atmosphere and extends millions of Km into space.

• chromosphere

• photosphere

• exosphere

• corona

The real color of the Sun is _______.

• orange

• white

• yellow

• red

In which area of the sun does gas rise as it heats up, then fall back down as it cools?

• the core

• the radiative zone

• the convective zone

• the corona

Which layer of the sun is the hottest?

• Photosphere
• Chromosphere
• Corona
• Core

Our Sun is classified as a spectral "G₂" star - meaning that

• there are trillions more like it in our galaxy.

• it will die in a supernova explosion one day.

• there are no other stars like it.

• it has an average temperature & relative size.

Prominences are huge arching columns of gas that are associated with intense magnetic fields

• caused by solar flares.

• originating from the core.

• created by the chromosphere.

• caused by sunspots.

How much of the solar system's total mass is the sun?

• Less than 10%
• Approximately half
• 73.8%
• Over 99%

How can space weather impact the earth? (Check 2)

• cause rapid changes in weather patterns

• disrupt radio communication

• cause blackouts/disrupt electrical grids

• create holes in the ozone layer