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The Sun's Structure

Is the Sun a small star, an average sized star or a large star? Average sized
How large is the Sun? 1.3 million times the size of the Earth
What is the closest star to the Earth? the Sun
What is electromagnetic radiation? energy emitted from the Sun, makes electromagnetic spectrum
What are gamma rays? The strongest kind of electromagnetic waves
Stronger waves? Smaller waves
Weaker waves? Longer waves
What is the Sun made of? Plasma (hot gas-like substance)
How long is a full rotation of the Sun? 25 days
What is the core? innermost layer of Sun, source of all Sun's energy
Where does the Sun get its energy from? Nuclear fusion
What is nuclear fusion? When hydrogen's atoms fuse to form helium atoms
Hottest part of the Sun? the core
how hot is the core? 15 million degrees celsius
How much energy does the Sun have? enough for 5 billion years
What is the radiative zone? The first layer surrounding the core
Where does the radiative zone get its energy from? the core
How long does it take energy to reach each zone? 1 million years
What is the convective zone? The region where hotter substances rise and cooler substances sink
Hotter substances? Less dense
Cooler substances? More dense
What is the photosphere? The surface of the Sun, outer visible layer
How hot is the photosphere? 6000 degrees celsius
Why is the photosphere constantly bubbling? Because the heat from the interior is escaping into space
What is the chromosphere? The first (inner) atmosphere of the Sun, is above photosphere, 2000 km thick
What is the corona? Outer atmosphere of sun, millions of km in space
What is a solar flare? Violent eruption of hot gases + charged particles
Where do solar flares usually occur? Near sunspots
Why do solar flares occur? Changing magnetic field
Where do solar flares appear? on the surface of the Sun
Where do solar flares come from? The inner parts of the Sun
How long do Solar flares last? a short time
What are sun spots? dark, temporary depressions on photosphere
What causes sun spots? Caused by magnetic activity which act to reduce temperature, making area darker and cooler in comparison
What are solar prominences? Large clouds of lower energy glowing gas erupting from upper chromosphere + extending thousands of km
What is a solar wind? stream of charged particles ejected from upper atmosphere of Sun
What causes Aurora Borealis/Australis? When Sun's particles mix with particles in Earth's atmosphere during solar winds
Why is the Sun important for life on Earth? Provides heat, energy, light, climate and nutrition
Range of Sun's temperatures? 5500 degrees celsius - 15 million degrees celsius
Where are Auroras found? Near the North and South poles
How are satellites affected by solar activity? Communication satellites are affected by activity on the Sun's surface when particles from the Sun reach Earth's atmosphere, through solar winds. This damages microchips on satellites, and interrupts cell phones, radio and television
Created by: lovinglifexoxo