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.
- 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.
Hawksett, D 2006, Stars and Planets, Hinkler books, Victoria
Mars 6 October 2012 , Wikipedia, <http://en.wikipedia.org/wiki/Mars>
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 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.
Otway, H 2008, Exploring Your Senses, Tormont Publications, Ireland
Your Eyes 2012, Kids Health, <http://kidshealth.org/kid/htbw/eyes.html>