The Sun

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.

Tags

NGSS.HS-ESS1-1

Like more than ___ billion stars in the Milky Way galaxy, our Sun is a huge ball of plasma gas.

• 1

• 10

• 100

• 1000

Tags

NGSS.HS-ESS1-1

Like other stars, the Sun produces energy in its core by

• fusing hydrogen into helium.

• burning plasma gas.

• mostly unknown chemical reactions.

• fusing helium into hydrogen.

Tags

NGSS.HS-ESS1-1

Energy fro the core passes through the ____ zone, then the _____ zone before reaching the surface.

• convection, radiation

• photosphere, chromosphere

• radiation, convection

• radiation, photosphere

Tags

NGSS.HS-ESS1-1

The core's temperature reaches to about 28 million ^oF, while the surface temperature is about ____.

• 10 ^oF

• 1000 ^oF

• 1,000,000 ^oF

• 10,000 ^oF

Tags

NGSS.HS-ESS1-1

The _____ is the "surface of the Sun or the lowest part of the Sun's atmosphere.

• corona

• chromosphere

• photosphere

• exosphere

Tags

NGSS.MS-ESS1-1

Above the photosphere is the _____ - which is the thinnest of the Sun's layers.

• radiative layer

• chromosphere

• corona

• solar wind

Tags

NGSS.HS-ESS1-1

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

• chromosphere

• photosphere

• exosphere

• corona

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

• 3.6 million

• 1 million

• 10,000

• 100,000

Tags

NGSS.HS-ESS1-1

Charged particles continuously escape from the corona and move through the solar system as

• space debris.

• charged particles.

• solar storms

• solar wind