Tides and Hurricanes Flashcards
8 views of moon from earth
new, waxing crescent, first quarter, waxing gibbous, full, waning gibbous, third quarter, waning crescent
moonlight comes from
sun’s reflection off moon’s surface, varying due to moon’s orbit
tides
bulges on both sides of the earth that align with moon pull exerted by earth and moon on each other
Rising and ebbing tides caused by
earth’s landmasses rotating
spring tides
occurs when earth sun and moon line up, combining gravitational pull and making tides more extreme
neap tides
moderate tides when sun is at a right angle to moon
hurricane(cyclones or tycoon in other parts of world not atlantic)
most violent storm greater than 74mph or 63 knots
hurricane season
June 1 to November 30
Hurricanes form on West Coast of Africa because
very warm ocean water on equator causes evaporation moisturizing air, wind colliding creates current and vacuum, pulling humid air up when it cools down, humidity condenses forming clouds, winds steers it and waters and winds that it comes across affects it.
wind spins ___ in northern hemisphere, but ___ in the southern hemisphere
counter clockwise, clockwise
eye
center of storm caused by descending cool air, most moderate part of hurricane and about 20 miles in diameter
eyewall
area around edge of storm contains strongest storms
tropical disturbance
unsettled weather that stays together at least 24 hours
tropical depression
storm begins to rotate, sustained winds up to 38mph, designated by a number
tropical storm
39-73 mph of distinct rotation around a center of how pressure, designated with a name