Cosmic Rays and Solar Flares (1)

8/20/2019 Cosmic Rays and Solar Flares (1)

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Cosmic rays and solar flares

Draw in the back of your book the

life cycle of a star


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• Cosmic rays are fast-moving ionising

particles from the Sun.

• The Earth’s magnetic field prevents them

from reaching us because they would be very

harmful

• Solar flares (bursts of energy from the Suninterfere with these satellite systems.

!"e

Solar flares and Cosmic rays#ou should learn$


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Cosmic rays

• Cosmic rays are not really rays at all, they are astream of particles of ionised atoms.

• They can range from a single proton to the nucleusof an iron atom-or larger

• The most common cosmic ray is a alpha particle(3protons and neutrons!

• Cosmic rays originate in space and are producedform sources such as"

# The sun # $ther stars

# %uperno&a and their remains

# 'eutron stars and black holes

# Distant galaies


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• Cosmic ray particles aretra&elling at speeds close

to that of light and theyha&e a lot of energy

•The rays interact with the magnetic field of

the earth, spiralling around the field lines

•)roducing a concentration of cosmic rays at

the north and south poles


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•$n certain nights these

shifting patterns can be seen

in the sky.

•They are called *uroras

•These bright lights are

caused by cosmic rays

streaming out from the sun

and striking earths upper

atmosphere

•+nergy from these charged

particles is con&erted intolight and forms &isible

glows, rays, arcs, bands and

&eils.

•sually green but can bered or purple


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Cosmic rays

Cosmic rays are %%%%%%%%%% particles from theSun& %%%%%% and %%%%%%%%. The mostcommon type of particle is a %%%%%%%%%%particle. They interact with the Earth’s

%%%%%%%%%% field. Energy from these chargedparticles is converted into light which can beseen in the %%%%%%% %%%%%%% and %%%%%%% %%%%%% called 'uroras. These bright lights are

caused by %%%%%%%% rays streaming out fromthe sun and striing earthsupper%%%%%%%%%%%.


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%olar flares

• * solar flare is a&iolent eplosion

abo&e the suns

surface.

• * large amount

of energy is

released


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• %olar flares may last for mins and will produce more energy than a /0110$'

hydrogen bombs.

• There is a peak in this type of acti&ity e&er- yrs, during which large numbers of

charged particles are released at &ery highspeeds

• This results in the production of a magnetic

field that interacts with the earths magneticfield


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• $nly a smallamount of energyreaches the earth

from a solar flare, but it is enough tointerfere withradio and

microwa&etransmissions

• They can alsoaffect electrical

power distributionin the national grid


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• ' solar flare is a %%%%%%%%%%% above the sunssurface. ' large amount of %%%%%%%%% isreleased.

• ' solar flare consists of charged particles from

the %%%%%% that travel at high speed andproduce strong %%%%%%%% fields.

• Solar %%%%%%% interfere with the operation ofsatellites by interfering with %%%%%%%%%%%%%%

and %%%%%%%%%%%%%%%. They also can cause %%%%%%%%%%%% %%%%%%%%%%.

%olar flares


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Cosmic Rays and Solar Flares (1)