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water

(Encyclopedia)CE5 A. Water molecule (black circles represent valence-shell electrons) B. Structure of ice: Each oxygen atom (white circles) is bonded to four other oxygen atoms by hydrogen bonds, the hydrogen at...

iceboating

(Encyclopedia)iceboating, sport of sailing a specially prepared boat equipped with runners over ice. The first iceboats were probably sailed by the Dutch during the 18th cent., although the Finns and Sami (Lapps) m...

halo, in meteorology

(Encyclopedia)halo, in meteorology, short-lived circles or arcs, and less commonly spikes and crosses, of colored or whitish light surrounding the moon or sun or in clouds as seen from above. A halo occurs when the...

frozen foods

(Encyclopedia)frozen foods, products of the food preservation process of freezing. This process has been employed by people in the Arctic from prehistoric times. Eskimos throw fresh-caught fish on the ice to freeze...

Antarctic Peninsula

(Encyclopedia)Antarctic Peninsula, glaciated mountain region of W Antarctica, extending c.1,200 mi (1,930 km) N toward South America. In the south, volcanic peaks rise to c.11,000 ft (3,350 m); other volcanic cones...

Anaheim

(Encyclopedia)Anaheim ănˈəhīm [key], city (2020 pop. 346,824), Orange co., S Calif., SE of Los Angeles; inc. 1870. Anaheim was founded by Germans in 1857 as an experiment in communa...

Mer de Glace

(Encyclopedia)Mer de Glace mĕr də gläs [key] [Fr.,=sea of ice], glacier (3.5 mi/5.6 km long; 16 sq mi/41 sq km), Haute-Savoie dept., E France, on the northern slope of Mont Blanc. It is formed by the junction of...

hail, in meteorology

(Encyclopedia)hail, precipitation in the form of pellets composed of ice or of ice and snow, occurring at any time of the year, usually during the passage of a cold front or during a thunderstorm. Small hailstones ...

snowball earth

(Encyclopedia)snowball earth, hypothesized condition in which the earth was covered completely by ice during several periods in the Proterozoic. The hypothesis was originally developed to explain evidence of the co...

rainmaking

(Encyclopedia)rainmaking, production of rain by artificial means now generally disregarded, though it is probable that rainmaking hastens or increases rainfall from clouds suitable for natural rainfall. Interest in...