Light

All light is bright and so are these ten facts!

  • Light comes in two forms of energy, brightness and heat. Light also has two groups, natural light, like stars and fires, and artificial lights, like electric bulbs and lamps.
  • The sun’s light travels 299,260 km/186,000 miles per second which means it takes 8 minutes to reach Earth.
  • A shadow forms when a ray of light shines on a solid object.
  • Transparent materials allow light to travel through it, while translucent materials let a little light through. Opaque materials let no light through.
  • When a ray of light touches a shiny or polished surface, the ray bounces back.

 light, sun, ten random facts

 

  • When light travels through a fine droplet of water or a prism, a rainbow forms.
  • Light rays contain colour. These colours are red, orange, yellow, green, blue, indigo and violet. Light’s primary colours are red, green and blue (RGB).
  •  Each wavelength of light is smaller than your hair.
  • The longest wavelength, red, has the least energy while the shortest wavelength, violet, has the most energy.
  • Light rays bounce off colours of its same colour type, while other light rays are absorbed when they touch a colour that is not its same colour type.
Bibliography:
Devonshire, H 1991, Light, Franklin Watts, Great Britian
Herman, G 2004, Color Day Relay, Scholastic, USA

Fishpond: The Illuminating World of Light with Max Axiom, Super Scientist (Graphic Science) The Nature of Light and Colour in the Open Air (Dover Books on Earth Sciences)           Amazon: 

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

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