DISCOVERY INQUIRY
PRESENTATION
By Rochelle Cole
WHY ARE THE SUN AND
PLANETS ROUND?
WHY ARE THE SUN AND PLANETS
RO U N D ?
 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?
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.
WHAT’S THE DIFFERENCE
BETWEEN A DWARF
PLANET AND A PLANET
WHAT’S THE DIFFERENCE
BETWEEN A DWARF
PLANET AND A PLANET
Dwarf Planet
Planet
 Definition from 2006 means
 Definition from 2006 means
 A planet is celestial body that
 a dwarf planets is defined as a celestial
1.
Is in orbit around the Sun,
body
2.
Has sufficient mass to assume
1.
Is in orbit around the Sun,
hydrostatic equilibrium (a nearly round
2.
Has sufficient mass to assume
shape), and
3.
Has "cleared the neighbourhood"
around its orbit.
hydrostatic equilibrium (a nearly round
shape)
3.
Has not cleared the neighbour around
it’s orbit
ARE THERE
ANY OTHER
SOLAR SYSTEMS IN THE
UNIVERSE?
ARE THERE
ANY OTHER
SOLAR SYSTEMS IN THE
UNIVERSE?
 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
http://www.universetoday.com/75835/why-are-planets-round/
http://www.pa.msu.edu/sciencet/ask_st/031198.html
http://coolcosmos.ipac.caltech.edu/ask/194-Why-are-all-of-theplanets-roundhttp://curious.astro.cornell.edu/question.php?number=19
http://wiki.answers.com/Q/Why_are_planets_round#slide1
http://www.ask.com/question/why-are-planets-round
http://www.thenakedscientists.com/HTML/questions/question/2798
/
http://www.ask.com/question/why-are-planets-round-in-shape
http://curious.astro.cornell.edu/question.php?number=372
http://www.factmonster.com/ipka/A0875452.html
http://answers.yahoo.com/question/index?qid=20100425025936AAski3I
http://rome.mrdonn.org/romangods/planets.html
http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question48.html
http://www.universetoday.com/34362/names-of-the-planets/
http://planetarynames.wr.usgs.gov/Page/Planets
http://www.scholastic.com/teachers/article/planets-0
http://physics.stackexchange.com/questions/26040/what-is-the-officialdifference-between-a-planet-and-a-dwarf-planet
http://lasp.colorado.edu/education/outerplanets/kbos_dwarfplanets.php
http://answers.yahoo.com/question/index?qid=20111014102314AA9Zlue
https://solarsystem.nasa.gov/planets/profile.cfm?Object=Dwarf&Display=Mo
ons
http://wiki.answers.com/Q/What_is_the_difference_between_a_dwarf_plan
et_and_a_planet#slide1
http://wiki.answers.com/Q/What_is_the_difference_between_a_dwarf_plan
et_and_a_planet#slide1
http://wiki.answers.com/Q/How_are_dwarf_planets_different_from_regular
_planets#slide1
http://www.differencebetween.info/difference-between-dwarf-planet-andplanet
http://www.space.com/15216-dwarf-planets-facts-solar-system-sdcmp.html
http://spaceplace.nasa.gov/review/dr-marc-space/solar-systems-ingalaxy.html
http://www.universetoday.com/71957/another-solar-system-like-our-own/
http://www.sciencedaily.com/releases/2010/01/100105161540.htm
http://scienceline.ucsb.edu/getkey.php?key=3107
http://answers.yahoo.com/question/index?qid=20110308125150AAtjMrE
http://www.nhm.ac.uk/nature-online/space/planetary-system/
http://www.bbc.co.uk/schools/events/spaceday/galaxies.shtml
http://scienceblogs.com/startswithabang/2012/04/26/so-youve-learnedthat-the-sun/
http://scienceline.ucsb.edu/getkey.php?key=71
http://answers.yahoo.com/question/index?qid=20110425164520AAyCJuh
http://wiki.answers.com/Q/When_will_our_sun_explode#slide1
http://english.pravda.ru/science/mysteries/10-08-2011/118707-sun_death0/
http://curious.astro.cornell.edu/question.php?number=232
http://www.universetoday.com/18847/
http://www.dailymail.co.uk/sciencetech/article-436969/One-day-sun-explode-just-like-this.html
http://www.bibliotecapleyades.net/ciencia/ciencia_sol05.htm
http://adsabs.harvard.edu/full/1941PA.....49..360Ghttp://www.space.com/177
77-what-is-earth-made-of.html
http://coolcosmos.ipac.caltech.edu/ask/58-What-is-Earth-made-ofhttp://www.universetoday.com/15048/what-is-the-earth-made-of/
http://www.ask.com/question/what-is-earth-made-out-of
http://www.nasa.gov/audience/forstudents/k-4/stories/what-is-earth-k4.html
http://www.earth.northwestern.edu/people/seth/107/Rocks/compintro.htm
http://simple.wikipedia.org/wiki/Earth
http://www.ducksters.com/science/composition_of_the_earth.php
http://www.bbc.co.uk/schools/gcsebitesize/geography/natural_hazards/tecton
ic_plates_rev1.shtml
http://www.kidcyber.com.au/topics/earth.htm