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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