(Encyclopedia) pain, unpleasant or hurtful sensation resulting from stimulation of nerve endings. The stimulus is carried by nerve fibers to the spinal cord and then to the brain, where the nerve…
SCIENCEWHAT DO SCIENTISTS DO? WHAT IS SCIENTIFIC METHOD? WHY DO SCIENTISTS PERFORM EXPERIMENTS? FIND OUT MORETECHNOLOGYHOW ARE SCIENCE AND TECHNOLOGY LINKED? FIND OUT MOREMATHEMATICSWHAT ARE…
Tinkering with MarketsLook at These Prices!IntroductionLet's Stretch: Elasticity of DemandWhat Determines Elasticity?Tinkering with MarketsThe Price You Gotta Pay Up to now we have been examining…
(Encyclopedia) calorie, abbr. cal, unit of heat energy in the metric system. The measurement of heat is called calorimetry. The calorie, or gram calorie, is the quantity of heat required to raise the…
FAULTSEISMOLOGYFIND OUT MOREEarthquakes are caused by movements of the giant tectonic plates that form Earth’s crust. SEISMOLOGY is the study of earthquakes. Most occur at cracks called…
COHESIONVISCOSITYVOLUMEFIND OUT MOREAs water flows along a river, it constantly changes its shape to fit the space available. This is because water is a liquid, and liquids flow and do not have…
STAR SIZESDISTANCE TO THE STARSCONSTELLATIONSFIND OUT MORELike our Sun, stars are massive globes of intensely hot gas. They produce huge amounts of energy, which is given off as heat and light…
HOW DO WE MEASURE TIME? DOES TIME BEGIN AND END? BIOGRAPHY: ALBERT EINSTEIN German, 1879–1955 RELATIVITY FIND OUT MORE
We use time to say when an event happened or how long it lasted.…
