Show:
The Ocean Surface
Threats and Safe Guards
Exploring the Oceans
The Changing Oceans
Ocean Life
100
These formations of ice float around Antarctica and in the Arctic Oceans.
What is an ice burg.
100
Tropical coral reefs are poisoned by this.
What is pollution
100
By 1200 this was invented to help sailors navigate the oceans.
What is a compas
100
This theory states that the continents were once all connected.
What is the "continental drift" theory
100
These tiny organisms provide food directly or indirectly for almost all the larger creatures living in the ocean.
What is plankton
200
This flows like rivers through the sea, driven by winds and local differences in water density.
What is a current
200
Marine life is under thread from these two things.
What is pollution and people's behavior
200
This type of compas gives exact readings because it is unaffected by magnetic forces.
What is a Gyroscopic Compas
200
In the past, these two things caused sea levels to rise.
What is melting ice sheets and vast undersea lava flows
200
These types of animals are warm blooded creatures that cannot breath under water but took to the sea to find food millions of years ago.
What is mammals
300
This causes tides. These tides cause the sea level to rise and fall twice a day.
What is the Moon
300
Oil-dispersing chemicals and floating booms help do this in narrow bays.
What is cleaning oil spills
300
This type of suit protects divers from the crushing water pressure at depths of up to 2,000 feet.
What is a JIM suit
300
This leaks molten rock by the Mid-Atlantic Ridge.
What is volcanoes
300
These are found in warm, shallow seas and oceans.
What is coral reefs
400
Waves are raised by this.
What is winds
400
This holds vast mineral deposits.
What is a seabed
400
This is a stick map, curved sticks stood for ocean swells and the shells represented islands.
What is a Micronesian stick map
400
This string of islands emerged one by on as pulses of molten rock from a hot spot punched up through the ocean plate moving overhead.
What is the Hawaiian Islands
400
Creatures in this depth rely on eating each other or dead animals or algae that rain down from above as a food source.
What is the twilight zone
500
These are the biggest waves to strike a shore.
What is seismic sea waves (tsunamis)
500
These people clean up oil spills.
What is ecologists
500
This is used to determine latitude.
What is a sextant
500
This island exploded into existence following an undersea volcanic eruption in 1963.
What is Surtsey Island
500
This sea mammal eats and sleeps on its back in the water.
What is a sea otter