The sun is mainly made up of two gases
Helium and hydrogen
How many Earth you can fit within the volume of the sun?
1 million Earths
If the source of Sun’s energy, is wood burning,
then how long would it last=? (as shown in the
Demo of the wood fire on the beach)
5 or 6 thousand years
How long did the Sun sustain life on Earth as revealed by carbon dating? Does the mean gas combustion is a possible source of energy in the Sun?
3 billion years. No, because there had to be something else fuelling the sun.
Describe the two main conditions for the nuclear fusion to take place.
Fusion occurs when atoms are smashed together at a high rate of speed and literally fused. The positive and negative electric charges must in a very hot and dense environment so they can get close enough to fuse.
Where does fusion take place in the Sun? at the
surface? In the core? Explain.
Fusion occurs at in the core of sun because it’s the hottest place in the solar system and it’s incredibly dense.
When hydrogen atoms fuse together, which
element do they form=?
They form helium
What happens to the missing mass in the fusion
reaction?
When hydrogen fuse into helium, the resultant atom is slightly less massive than the original ones. The missing mass is released as energy.
For each second, the sun burns……?………
Mtons/second of Hydrogen and produces =….?….
Mtons/second of Helium
600 million tons of hydrogen are fused into 595 million tons of helium.
Energy particles of light are called =?
Photons
What do we call the zone, just outside the core of
the sun=?
Radiative Zone
What do we call last zone just below the Sun’s
surface=? How?
Convection Zone
Which element the video mentions as evidence that
the Sun was born from the ashes of another dying
star=?
The nebular theory, complex heavy elements like uranium could’ve not been formed in the sun because there’s not enough heat in a star the size of the sun to create heavy elements like uranium. It could’ve only been created in a catastrophic cosmic explosion
What does drive the outbreak of explosions at the
surface of the Sun=?.
The explosive burst are driven by magnetism. The sun has 1-10 millions poles. The sun magnetic field is a tangled web, even though it’s held by gravity, the plasma doesn’t rotate evenly.
How many days does it take for the gas at the
equator of the Sun to rotate =?
Plasma at the equator rotate once every 25 earth days while plasma at the poles takes 35 earth days to circle once.
Features at the surface of the sun, like, coronal
loops and prominences are evidence of presence of
=….?…. at the surface of Sun
Magnetic fields lines to become twisted and messed up.
Why sunspots are dark? (are these hot or cooler
spots?
The material is cooled as much as a thousand degrees creating dark blemishes on the surface of the sun called dark spots.
Who was the first scientist that observed the
sunspots=?
Galileo
The colossal explosion at the surface of the Sun is called =? its energy is equivalent to how many volcanic eruptions?
Solar flares which was so powerful which created a Sun is as strong as millions volcanic eruptions.
What does CME stand for? C-? M-? E”?
Coronal Mass Ejections
Solar storms are made up of what?
Large masses of supercharged particles
How does Earth get protected from solar storm or solar wind?
Earth is protected by it’s strong magnetic field. Solar storms are strongly minotored to ensure that communication and electricity is maintained. Satellites can be put to sleep when a solar wind is alerted.
How the location of the sunspots on the surface of the Sun may be a concern for us?
It’s important to know the location of the sunspots because if a solar flare occurs, we can see where it’s blowing it and then it can be measured to see when it will reach the Earth. From the centre of the sun as it rotations around to Earth the full force of the storms could slam into the planet.
Solar wind causes light show of color in the sky called =?
Aurora
