marine bio ch. 1 test
Terms
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copy deck
- What happened to Titanic
- hit iceberg, took in water, went vertical and sank
- Bouyancy
- the upward supporting force given to floating objects
- Archimedes
- greek scientists 287-212bc
- Archimedes Principle
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bouyant force is = to weight of liquid object displaces
apparent loss in weight is = to the weight of the liquid displaced - Why do some objects sink while others float?
- if the object weighs more than the water is displaces it sinks
- What damage caused people to first think caused the titanic to sink?
- huge gash the ship filled with water and the added weight became greated than bouyant force
- Relationship between bouyant object and water it displaces?
- a bouyant object weighs the same as the water it displaces
- Why are many settlements along coasts?
- cheaper to transport cargo
- Earliest recorded trading routes
- Phoenicians
- Ptolemy
- greek geographer first accurate map of world
- Characteristics of viking ships
- made of oak, 15-30m, powered by sails and oars, flat bottom for safe travel in shallow water
- Viking discoveries
- greenland, canada
- Bartholomue Dias
- sailed around southern tip of Africa
- Columbus
- crossed atlantic landed in bahamas, central and south america
- John Cabot
- explored coast of north america
- Amerigo Vespucci
- first to realize that north america was not part of asia
- Vasco Nunez de Balboa
- sailed across panama and saw pacific ocean
- Ferdinand Magellan
- first circumnavigate
- Giovanni da Verrazano
- explored coast of north america from georgia to mass.
- Jacques Cartier
- traveled st lawrence river and eastern coast of canada
- Captain James Cook
- discovered solution to scurvy(lack of vitamin c) to eat citrus fruits and mapped many islands
- Ben Franklin
- discovered gulf stream / currents traveled east from america
- Charles Darwin
- Sailed on HMS beagle collected and discovered many animals/galapagos islands