Planet Mars

Mars is one of the many planets in our solar system, and here are ten facts about it!

  • One day on Mars is equal to 24.6 Earth hours.
  • One year on Mars is equal to 687 Earth days.
  • Mars has north and south ice caps made from water and carbon dioxide.
  • Mars has 2 moons.
  • Mars is 288 million kilometers away from the sun.

NASA, Mars, Ten Random Facts, NSSDC

Mars
Photo courtesy of NASA – NSSDC (Broken Link)
  • Mars is the planet in the solar system that is most Earth-like. Mars has volcanoes, valleys and dried-up river beds.
  • Mars is named after the Roman god of war.
  • The soil on Mars contains magnesium, sodium, potassium and chlorine.
  • Mars is the home to the mountain, Olympus Mons, which is the largest mountain in the solar system.
  • Mars’ atmosphere contains 95% carbon dioxide, 3% nitrogen, 1.6% argon and contains very small amounts of water and oxygen.
 Bibliography:
Hawksett, D 2006, Stars and Planets, Hinkler books, Victoria
Mars 6 October 2012 , Wikipedia, <http://en.wikipedia.org/wiki/Mars>

Destination Mars: New Explorations of the Red Planet Life on Mars: Tales of the Red Planet

Eyes

Your eye is amazing- and here is ten random facts about them!

  • Your eyelids and eyelashes help protect your eyes from dust, dirt and germs from entering them.
  • Your eyeball is as big as a ping-pong ball.
  • Your eye sees an image upside down, so your brain flips the image the right way up.
  • Tears are made of water, chemicals and oil.
  • If your cornea and retina do not work together your vision will be blurry.

Eye, human, ten random facts

  • Eye muscles move more than 100,000 times a day.
  • The cornea, the visible part of your eye, is the only part of your body that should not contain any blood.
  • Your eye has a jelly-like coating, scientifically named vitreous humour, that moulds your eyeballs into a round, spherical shape.
  • 32% of the world’s population have blue or grey irises,12% of the world’s population have green or light brown irises and 25% of the world’s population have dark brown irises.
  • Your eye uses cells called rods, which sees gray-scale, and cones, which see colours. 1 eye has about 120 million rods and 7 million cones.
Bibliography:
Otway, H 2008, Exploring Your Senses, Tormont Publications, Ireland
Your Eyes 2012, Kids Health, <http://kidshealth.org/kid/htbw/eyes.html>

Better Eyesight without Glasses A Guide to Ophthalmology: An Overview, Sushruta, Rufus, Sub-Specialties, Etc.

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