The sun chapter 30.1

The sun has a _____ "cycle" of activity

11.2 years

The density of the sun is ___ greater than lead!

13 times

Solar Composition: the sun is made of

73.4% Hydrogen and 25% Helium

The sun contains more than _____ of all the mass in our solar system.

99%

The SOLAR WIND is a gas made of

Charged partials

Where does the sun get its energy?

FUSION

The exterior of the sun is made of____________

Photosphere, Chromosphere, Corona

The interior portion of the sun is made of_______.

Plasma ( or ionized gass)

A __________ is a cooler, dark spot on the surface of the sun where a magnetic field pokes through and hot gases are prevented from rising for a period

SUNSPOT

The most we known about the sun comes from the ___________.

Solar Heliospheric observatory (SOHO)

INTERIOR is made up of:

The Core, Radiative Zone, Convective Zone

The exterior of the sun is made of ___________.

Very hot gases.

Convective Zone

energy is passed by convection (cycling) of material up to the photosphere

Radiative Zone

energy is passed by radiation from atom to atom

Corona

extends millions of Kilometers away from the sun.

These gases become trapped in two huge rings in the

far North and far South of earth.

The sun's ____________reverses each 11.2 years at the end of this cycle

magnetic field

A SOLAR FLARE is a violent eruption of ______ and ________ from the sun's surface.

particles and radiation

Chromosphere

region above photosphere visible only during an eclipse (2500 Km thick)

These can damage_______and_______ a few days later Earth.

satellites and communications

FUSION:

the Combining of nuclei of small atoms into atoms of heavier nuclei

Photosphere

the lowest layer, the visible surface of the sun (400 km thick)

FISSION:

when a big atom is when a big atom is split into smaller, lighter nuclei

The Core

where Energy is produced