Ocean 102 Exam with Complete
Solution
What causes are magnetic field? - Answer-Liquid iron generates electric currents
What methods can you use to determine the depth of the sea floor? - Answer-Echo-
sounding
What are the main classifications of oceanic sediments? - Answer-Lithogenous,
hydrogenous, biogenous, and cosmogenous
What are the differences between oceanic and continental plates? - Answer-Continental
is mostly granite, oceanic is basaltic
How does density affect the layering of our planet? - Answer-Gravity pulls more strongly
on denser materials so denser materials are at the center of things
Who came up with the theory of continental drift? - Answer-Alfred Wegener
Where are the youngest mountains in the world - Answer-The Himalayas in Asia
How are submarine canyons formed? - Answer-turbidity currents
What resources are from the ocean - Answer-Mined for minerals; salt, sand, gravel
What methods did the Polynesians use to navigate the ocean? - Answer-Stick charts,
sticks (coconut fibers)
What was the first oceanic voyage? - Answer-The H.M.S. Challenger expedition
How do we know the distance to nearby stars? - Answer-Parallax
How do we know the distance to stars that are far away? - Answer-Absolute Brightness
What is the typical life cycle of a SMALL star? - Answer-Stellar Nebula, Average Star,
Red Giant, Planetary Nebula, White Dwarf
What is the typical life cycle of a BIG star? - Answer-Stellar Nebula, Massive Star, Red
Supergiant, Supernova, blackhole, neutron star
How do we know the universe is expanding? - Answer-Galaxies are moving away from
us, the farther the faster.
Solution
What causes are magnetic field? - Answer-Liquid iron generates electric currents
What methods can you use to determine the depth of the sea floor? - Answer-Echo-
sounding
What are the main classifications of oceanic sediments? - Answer-Lithogenous,
hydrogenous, biogenous, and cosmogenous
What are the differences between oceanic and continental plates? - Answer-Continental
is mostly granite, oceanic is basaltic
How does density affect the layering of our planet? - Answer-Gravity pulls more strongly
on denser materials so denser materials are at the center of things
Who came up with the theory of continental drift? - Answer-Alfred Wegener
Where are the youngest mountains in the world - Answer-The Himalayas in Asia
How are submarine canyons formed? - Answer-turbidity currents
What resources are from the ocean - Answer-Mined for minerals; salt, sand, gravel
What methods did the Polynesians use to navigate the ocean? - Answer-Stick charts,
sticks (coconut fibers)
What was the first oceanic voyage? - Answer-The H.M.S. Challenger expedition
How do we know the distance to nearby stars? - Answer-Parallax
How do we know the distance to stars that are far away? - Answer-Absolute Brightness
What is the typical life cycle of a SMALL star? - Answer-Stellar Nebula, Average Star,
Red Giant, Planetary Nebula, White Dwarf
What is the typical life cycle of a BIG star? - Answer-Stellar Nebula, Massive Star, Red
Supergiant, Supernova, blackhole, neutron star
How do we know the universe is expanding? - Answer-Galaxies are moving away from
us, the farther the faster.
