HOW DOES THE INTERNET WORK? WHAT IS THE WORLD WIDE WEB? WHAT IS HYPERTEXT? BIOGRAPHY: TIM BERNERS LEE British, 1955- MARC ANDREESSEN American, 1971-SEARCH ENGINESFIND OUT MOREThe global computer…
WHAT DOES A LENS DO? WHAT IS THE DIFFERENCE BETWEEN A MICROSCOPE AND A TELESCOPE? CONVEX LENSCONCAVE LENSFIND OUT MOREWhen you look through a magnifying glass, or take a picture with a camera, you…
WHAT IS LIGHT? HOW DOES LIGHT TRAVEL? WHAT ARE SHADOWS? WHAT MAKES SOME MATERIALS OPAQUE? REFLECTIONREFRACTIONLASERFIND OUT MORELight is a type of energy known as electromagnetic radiation. It is…
WHAT IS MECHANICAL ADVANTAGE? HOW IS A MACHINE’S EFFICIENCY MEASURED? LEVERSPULLEYSINCLINED PLANESGEARSFIND OUT MOREFrom can openers to cranes, machines make work easier. Simple machines include…
WHAT ARE MAGNETIC POLES? WHAT ARE MAGNETIC MATERIALS? HOW DOES A MAGNETIC COMPASS WORK? MAGNETIC DOMAINSMAGNETIC FIELDFIND OUT MOREMagnetism is an invisible force that attracts or repels some…
WHERE DO NEW PRODUCTS COME FROM? WHAT IS MASS PRODUCTION? BIOGRAPHY: HENRY FORD American, 1863–1947 PRODUCTION LINEFIND OUT MOREFrom ankle socks to aircraft, almost everything we use has been…
WHAT ARE MATERIALS’ PROPERTIES? HOW STRONG IS A SPIDERWEB? HOW ARE MATERIALS USED? SYNTHETICSFIND OUT MOREAny substance that is used to make something is a material. Natural materials such as stone…
WHAT ARE MATHEMATICAL MODELS? WHAT IS SCIENTIFIC NOTATION? FIND OUT MOREMathematics explores the properties (characteristics) of numbers, shapes, and space. Using math, scientists can describe…
WHERE DOES MATTER COME FROM? WHAT ARE STATES OF MATTER? WHAT ARE FUNDAMENTAL PARTICLES? MASSFIND OUT MOREDust, living things, oceans, mountains, and planets—everything you can touch is made from…
WHAT IS A MEASUREMENT SCALE? WHO MADE THE FIRST MEASUREMENTS? HOW ARE MEASUREMENT UNITS FIXED? FIND OUT MOREHow big is an ant? How high is a mountain? An observation of a property (characteristic)…
