ARE ALLOYS STRONGER THAN PURE METALS? DO ALLOYS MELT EASILY? WHO FIRST USED ALLOYS? SOLDERFIND OUT MOREAn alloy is a mixture of metals, or of metals and other substances. Mixing metals and other…
HOW BIG IS AN ATOM? WHAT’S INSIDE AN ATOM? HOW CAN ATOMS BE SPLIT? ATOMIC STRUCTUREMOLECULESFIND OUT MOREAll matter is made from particles called atoms. The Ancient Greeks described atoms as the…
HOW DO WE USE MICROBES? WHAT ARE ANTIBIOTICS? BIOGRAPHY: SIR ALEXANDER FLEMING Scottish, 1881-1955 FERMENTATIONFIND OUT MOREThe use of microbes (micro-organisms) to produce and process materials…
WHAT IS AN ELECTRIC CURRENT? WHEN DOES CURRENT FLOW IN A CIRCUIT? WHAT MAKES CURRENT FLOW IN A CIRCUIT? BATTERYCOMPONENTSFIND OUT MOREAn electric current flows in a loop, powering bulbs or…
WHAT IS THE VISIBLE SPECTRUM? WHAT ARE PRIMARY COLORS? HOW MANY COLORS CAN WE SEE? DISPERSIONCOLOR TREEFIND OUT MORELight has different wavelengths, which we see as colors. The range of wavelengths…
WHAT IS MEMORY? WHAT IS A MICROPROCESSOR? HOW IS VIRTUAL REALITY CREATED? FIND OUT MOREAn electronic machine that uses binary code to store and process data is a computer. Binary code can represent…
WHAT IS ELECTRICITY? HOW MANY FORMS OF ELECTRICITY ARE THERE? HOW DO MATERIALS BECOME CHARGED? ELECTROSTATIC INDUCTIONFIND OUT MOREA lightning strike demonstrates the incredible energy of…
HOW DOES ELECTRICITY CREATE MAGNETISM? HOW DOES MAGNETISM PRODUCE ELECTRICITY? WHAT DO GENERATORS DO? ELECTRIC MOTORSFIND OUT MOREAn electric current produces magnetism, and a magnet can produce an…
WHAT IS AN ELECTRIC SIGNAL? WHAT ARE ELECTRONIC COMPONENTS? WHAT IS A TRANSISTOR? SEMICONDUCTORSFIND OUT MOREElectronic circuits operate nearly every modern machine—microwave ovens, cars, and…
HOW MANY ELEMENTS ARE THERE? WHICH ARE THE MOST COMMON ELEMENTS? METALSPERIODIC TABLEFIND OUT MOREA substance made up of one kind of atom is an element. Gold is an element because it only contains…
