WIND TURBINEHOW AN ALTERNATOR WORKS 1HOW AN ALTERNATOR WORKS 2WIND FARMFIND OUT MOREGenerators convert energy from such sources as oil, gas, and wind into electrical energy. Like motors, they use…
DECIBEL SCALEROCK MUSICNOISE CANCELLINGFIND OUT MORESome sounds are so loud they are painful to our ears; others are so quiet they may be hard to hear at all. Things that vibrate a lot, such as…
AM SPECTRUMDIGITAL RADIOFIND OUT MORERadio depends on electricity and magnetism working together to make waves that travel through space at the speed of light. When you tune in your radio, you…
PHYLUM: ECHINODERMATAFIND OUT MOREEchinoderms have a spiny body that usually divides into five equal parts. They walk on hundreds of tube feet that are full of water. If they lose part of…
CARBON AS FUELALLOTROPECARBON CYCLEFIND OUT MORECarbon is the sixth most common element in the universe and is the main element in every living thing on Earth. Carbon atoms are passed between…
RAINBOWSPLITTING LIGHTSUNSETCOLOUR SPECTRUMSEEING COLOURFIND OUT MOREOn a sunny day, the world seems light and colourful because our eyes are able to see differences in the wavelengths of light…
HEARING APPARATUS OF THE EAR SENSORY HAIRS IN COCHLEA FIND OUT MORE
Our ears allow us to detect sounds, which pass through the air as waves of varying pressure. On reaching the ear, the…
PINHOLE CAMERAFILM CAMERAMILESTONES OF PHOTOGRAPHYPHOTOGRAPHIC FILMDIGITAL PHOTOGRAPHYFIND OUT MOREA camera is a device that records pictures. It consists of a sealed box that catches the light…
VARIETY OF MOLECULESSIMPLE MOLECULECOMPLEX MOLECULEBONDINGCHANGING MOLECULESFIND OUT MOREMost atoms join up with other atoms through chemical BONDS to form larger particles called molecules. They…
HOME CAMCORDERPROFESSIONAL VIDEOCCD SENSORFIND OUT MOREVideo cameras are small television cameras that can capture images on a portable recording device, such as an in-built tape or the camera’…
