Incredible Facts
Select topics from the contents below to find out some fascinating and incredible facts about them!
- Animal senses
- Are you Paying Attention?
- Computer Science Unplugged
- Captain Cook's First New Zealand Voyage
- Captain Cook's Second New Zealand Voyage
- Crystals
- Glassblowers
- Incredible Vision
- Incredibly Boney Bones
- Life on the Rocky Shore is Hard!
- Light Metals Transporting the World
- Life on Mars
- Why did the Moa grow so large?
- What is Colour Blindness?
- Slime
- Sport and Exercise
- The Internet
- Antarctica
Crystals
Many of the silicate minerals which make up the earth's crust are crystalline but will not dissolve in water. These crystals form when they are exposed to high temperatures and pressure deep in the earth's crust.
Crystals come in many different shapes and colours depending on the properties of the molecules or ions present.
Crystals can form in a number of ways. For example, solutions of sugar molecules or common salt (sodium and chloride ions) in water will form crystals as the water slowly evaporates.
