When a fossil arrives in a laboratory, it is usually embedded in a chunk of the rock it was found in. The first job for the specially trained technicians, called preparators, is to free the fossil…
Scientists have developed various systems of classification to describe living things. The one used here is a cladogram, which is a diagram that shows the relationship between different species of…
HOW ARE NEW MATERIALS MADE? WHAT PROPERTIES SHOULD NEW MATERIALS HAVE? WHY IS CARBON FIBER SO STRONG? SMART MATERIALSFIND OUT MOREMaterials scientists combine atoms in new ways to produce new…
WHAT ARE FUSION AND FISSION? HOW IS A NUCLEAR REACTION CONTROLLED? RADIOACTIVITYFIND OUT MOREThe energy that makes the stars shine and produces the heat inside a nuclear reactor is nuclear energy.…
WHAT IS A QUANTUM? WHY IS QUANTUM THEORY SO STRANGE? HOW DO SCIENTISTS USE QUANTUM THEORY? BIOGRAPHY: MAX PLANCK German, 1858–1947 QUANTUM LEAPFIND OUT MOREQuantum theory grew from the ideas of Max…
HOW CAN SOLIDS BE SEPARATED? HOW DOES DISTILLATION WORK? HOW ARE GASES SEPARATED? FILTRATIONFIND OUT MOREHow do we extract salt from seawater? Methods for separating a mixture depend on differences…
HOW DO CHEMICAL REACTIONS CHANGE MATERIALS? RUSTING IRON WHAT MAKES GLUE STICK? HOW DOES HEAT CHANGE MATERIALS? REVERSIBLE CHANGESPERMANENT CHANGESFIND OUT MOREWe can use chemical reactions and…
WHAT DOES A CHEMICAL PLANT DO? HOW ARE ACIDS AND ALKALIS USED? DRILLING FOR OIL OIL REFINERYAGROCHEMICALSPHARMACEUTICALSFIND OUT MOREPlastics, AGROCHEMICALS, PHARMACEUTICALS, paints, and detergents…
HOW ARE MOST GENERATORS POWERED? WHAT IS THE POWER GRID? WHAT IS ALTERNATING CURRENT? POWER GRID POWER STATIONSFIND OUT MOREElectricity has revolutionized the way we use energy. It can be generated…
