discovery inquiry presentation by rochelle cole. why are the sun and planets round?
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DISCOVERY INQUIRY PRESENTATION
By Rochelle Cole
WHY ARE THE SUN AND PLANETS ROUND?
WHY ARE THE SUN AND PLANETS ROUND?
Gravity is keeping the planets and stars spherical but mountains and valleys stop the
planets from being perfectly spherical.
Large mountains or skyscrapers can only get to a certain point before they get
destroyed because they collapse under their own weight because of gravity being so
strong the larger the planet gets. The earth is a more oblate spherical shape because
the earth spins.
Our solar system was formed from nebula , Nebula is a concentrated area of
gases and cosmic dust in the ISM when enough of this gathers it gains a
gravitational force.
Because asteroids (or similar like things out in space) are so small they don’t have
a gravitational force strong enough to make them spherical like the planets.
WHY ARE THE PLANETS CALLED WHAT THEY ARE?
Planets
Why the planets are called what they are.
Mercury
Named after the roman god of travel because it appears to move so swiftly
Venus Venus the planet that seem the brightest was named after the goddess of beauty
Earth Earths name came from old English and Germanic word for ground
Mars Mars because of it’s reddish colour was named after the war god because it reminded them of blood
Jupiter It is the biggest planet it was named after the most important Greek god
Saturn Former roman god of agriculture replaced by his daughter
Uranus
When it was discovered it was going to be called Georgium sidus but other astronauts called it Herschel but then Johann bode suggested to use a mythological name Uranus to match the five planets called antiquity.
Neptune
leverrier wanted to name it after himself but Neptune was proposed and used by scientists.
Total The planet names were named after Greek and roman mythology.
WHY ARE THE PLANETS CALLED WHAT THEY ARE?
W H A T ’ S T H E D I F F E R E N C E
B E T W E E N A D W A R F P L A N E T A N D A P L A N E T
Definition from 2006 means
A planet is celestial body that
1.Is in orbit around the Sun,
2.Has sufficient mass to assume
hydrostatic equilibrium (a nearly
round shape), and
3.Has "cleared the
neighbourhood" around its orbit.
Definition from 2006 means
a dwarf planets is defined as a
celestial body
1.Is in orbit around the Sun,
2.Has sufficient mass to assume
hydrostatic equilibrium (a nearly
round shape)
3.Has not cleared the neighbour
around it’s orbit
W H A T ’ S T H E D I F F E R E N C E
B E T W E E N A D W A R F P L A N E T A N D A P L A N E T
Planet Dwarf Planet
A R E T H E R E A N Y O T H E R
S O L A R S Y S T E M S I N T H E U N I V E R S E ?
A R E T H E R E A N Y O T H E R
S O L A R S Y S T E M S I N T H E U N I V E R S E ?
None that scientists have found but the reason for
this is spotting planets orbiting other stars is like
trying to spot a mosquito next to a brilliant search
light miles away, Because planets only shine from
the reflected light of the star they orbit which isn’t
much.
WHY IS THE SUN GOING TO EXPLODE
WHY IS THE SUN GOING TO EXPLODE
The sun will start go out in 5 billion years but a 4-5
million years before that it will turn into a red dwarf
which will reach the earth's orbit it will cool down
but it will still be way to hot to allow any life to still
live on earth
WHAT IS EARTH MADE OF ?
WHAT IS EARTH MADE OF?
You have the inner core, then the outer core, after that
there’s the mantle and the crust
The earths core is mostly made out of nickel and iron
The earths mantle is made out of rock containing silicon,
iron, magnesium, aluminium, oxygen and other minerals.
The earths crust is made out of oxygen, silicon, aluminium,
iron, calcium, sodium, potassium and magnesium.
RESOURCES
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