Earth In Space
365 1/4 days
How long does it take Earth to revolve around the Sun?
How long is an Earth year?
Winter, Spring, Summer, and Autumn
What are the four seasons on Earth?
Warm Surface Currents
Cold Surface Currents
What type of surface currents are found near the equator?
What type of surface currents are found near the poles?
Temperature and Salinity
What factors affect the density of deep currents?
How Surface Currents Travel
What were scientists able to learn from Rubber Duck Accident?
23.5 degrees
What is the tilt of Earth's axis?
Longest and Shortest days on Earth
What are solstices?
Clockwise/Counterclockwise Currents
In what direction do surface currents turn in N. Hemisphere?
In what direction do surface currents turn in S. Hemisphere?
Freezing and Evaporation
What are two ways to increase the salinity of ocean water?
Warm water layer went above Cold water layer
How did the warm and cold water currents layer in the density lab?
366 days
How many Earth days are in a leap year?
North axis tilted toward Sun in N. Hemisphere
What is summer in the Northern Hemisphere?
What is the winter in the Southern Hemisphere?
Rotation, Coriolis, Deflection
What three factors affect surface currents?
Carry COLD water from poles to equator
What are deep ocean currents?
Ducks traveled around ocean on surface currents
How were the rubber ducks able to make their ocean journey?
24 hours
How long does it take Earth to rotate once on its axis?
March 21st change of season
What is a vernal equinox in the N. Hemisphere and an autumnal equinox in the S. Hemisphere?
Moves 25 X's more warm water in ocean
What is the Gulf Stream?
Increased Density of Ocean Water
What happens when the temperature of ocean water decreases?
What happens when the salinity of ocean increases?
Thermohaline
What is the term that combines thermo for heat and haline for salt?
12 hours of day/12 hours night
How many hours of daylight and darkness does the experience during an equinox?
Dec. 21st change of season
What is a winter solstice in N. Hemisphere & a summer solstice in S. Hemisphere?
Currents change direction
What occurs when surface currents meet continents or deflect?
Upwelling of Deep Ocean Water
What is it called when cold nutrient rich waters move to the surface from deep ocean currents?
Coriolis Effect
What is the curving of the path of a moving object due to Earth's rotation?