Is One Room of Your House Colder Than Another?Science Projects for BeginnersWhat Kind of Trash Bag Breaks Down Fastest?Is One Room of Your House Colder Than Another?What Factors Are Conducive to Fog…
OCEAN WAVESBIOGRAPHY: HEINRICH HERTZ German, 1857-1894ELECTROMAGNETIC SPECTRUMSEISMIC WAVESFIND OUT MOREMany different kinds of energy travel in waves. Sound waves carry noises through the air to…
Feeling the PressureWeatherGoing in CirclesFeeling the PressureHigh Points and LowWhat Makes the Weather Go 'RoundWhat's in a Name?Scales of Motion Do you grow tired at the end of the day? I have an…
Partly to Mostly CloudyWeatherPartly to Mostly CloudyMoisture and HumidityIn the CloudsTen Major Cloud TypesForecasting by Clouds One of the great wonders of the universe is that our planet is…
(Encyclopedia) TellusTellustĕlˈəs [key], in Roman religion, earth goddess; also called Terra Mater. As a goddess of fertility, she was worshiped at festivals held in January (in conjunction with…
(Encyclopedia) CleomedesCleomedesklēˌōmēˈdēz, klēˌə– [key], fl. 2d cent., Greek astronomer. In a treatise on the circular theory of heavenly bodies, he recorded several hypotheses, e.g., the earth's…
(Encyclopedia) Manco CapacManco Capacmängˈkō käpäkˈ [key], legendary founder of the Inca dynasty of Peru. According to the most frequently told story, four brothers, Manco Capac, Ayar Anca, Ayar…
(Encyclopedia) reconnaissance satellite, artificial satellite launched by a country to provide intelligence information on the military activities of foreign countries. There are four major types.…
(Encyclopedia) eclipticeclipticēklĭpˈtĭk, ĭ– [key], the great circle on the celestial sphere that lies in the plane of the earth's orbit (called the plane of the ecliptic). Because of the earth's…
