Vocabulary Sheet #4

1. Atoll: ring of coral reefs around a lagoon
2. El Nino: Movement of warm water from the South Pacific Ocean, near Peru,  to the Western Pacific Ocean, near Australia. Effects the climate of these nations and those near them
3. Hail: Frozen precipitation formed in cumulonimbus clouds
4. Latitude: Imaginary lines on the Earth that are parallel to the Equator (0 degrees). They run from the Equator to the North and South Poles (90 degrees)
5. Piedmont: Area at the feet of mountains
6. Tidal bore: wall of sea water that moves up a river during a flood tide
7. Wadi: dry steambed that fills with water after rain (similar to an arroyo or a wash; comes from an Arabic term)
8. Doldrums: calm surface winds near the Equator
9. Microclimate: climate of a small area, such as a field or forest
10. Trough: U-shaped valley formed by a glacier OR the point between two points on a wave