Oceanography - An Invitation to Marine Science Test Questions with Correct Answers Fully Solved
Define Ocean - Answers (1) The great body of saline water that covers 70.78% of the surface of Earth.
(2) One of its primary subdivisions, bounded by continents, the equator, and other imaginary lines
What percent of Earth is covered by water? - Answers 71%
What is extraordinary about Earth? - Answers - Almost circular rotation around a stable star
- Large enough to hold atmosphere; Not so large that its gravity would overwhelm
- Not too much radiation
- Distance from the sun allows surface water to exist in a LIQUID STATE
Total Area - Answers 331,441,932 km²
Total Volume - Answers 1,303,155,354 km³
Total Mass - Answers 1.41 billion billion metric tons
Average Depth - Answers 3,682 meters
Greatest depth - Answers 10,994 meters
Mean ocean crust thickness - Answers 6.5 kilometers
Average temperature - Answers 3.9 degrees C
Average salinity - Answers 34,482 grams per kilogram
Average elevation of land - Answers 840 meters
Age - Answers 4.5 billion years
What percent of Earth's water on or near the surface is contained in the ocean? - Answers 97%
What percent of Earth's water on or near the surface is held in land ice, groundwater, and freshwater
lakes or rivers? - Answers 2.5%
What diameter would all of Earth's water be if it were gathered into a sphere? - Answers 1,380 km
What depth would all of Earth's water be if all of Earth's contours were leveled? - Answers 2686 meters
How many oceans are there? - Answers 5 Oceans: Pacific, Atlantic, Indian, Southern, Arctic
Average Land Elevation - Answers 840 meters
How many times larger is the average ocean depth than the average land elevation? - Answers 4.5
, Where do half of all humans live? - Answers Within 240 km of a coastline
What percent of the Earth's mass does the ocean account for? - Answers 0.02%
What percent of the Earth's volume does the ocean account for? - Answers 0.13%
What percent of freshwater do Glaciers, groundwater, permafrost, and surface/atmospheric water
make up? - Answers Glaciers - 68.7%
Groundwater - 30.1%
Permafrost - 0.8%
Surface/atmospheric water - 0.4%
What percent of Surface/atmospheric water do Freshwater lakes, soil moisture, atmosphere, wetlands,
rivers, and biota make up? - Answers Freshwater lakes - 67.4%
Soil moisture - 12.2%
Atmosphere - 9.5%
Wetlands - 8.5%
Rivers - 1.6%
Biota - 0.8%
Define Oceanography AKA Marine Science - Answers The scientific study of the ocean, its associated life-
forms, and its bordering lands
What do Marine Geologists do? - Answers Focus on questions such as the composition of inner Earth,
the mobility of the crust, the characteristics of seafloor sediments, and the history of Earth's ocean,
continents, and climate.
Their work includes earthquake prediction and the distribution of valuable resources.
What do physical oceanographers do? - Answers Study and observe wave dynamics, currents, and
ocean-atmosphere interaction
What do chemical oceanographers do? - Answers Study the ocean's dissolved solids and gases and their
relationships to the geology and biology of the ocean as a whole.
What do climate specialists do? - Answers Investigate the ocean's role in Earth's changing climate. Their
predictions of long-term climate trends are becoming increasingly important as pollutants change
Earth's atmosphere.
Define Ocean - Answers (1) The great body of saline water that covers 70.78% of the surface of Earth.
(2) One of its primary subdivisions, bounded by continents, the equator, and other imaginary lines
What percent of Earth is covered by water? - Answers 71%
What is extraordinary about Earth? - Answers - Almost circular rotation around a stable star
- Large enough to hold atmosphere; Not so large that its gravity would overwhelm
- Not too much radiation
- Distance from the sun allows surface water to exist in a LIQUID STATE
Total Area - Answers 331,441,932 km²
Total Volume - Answers 1,303,155,354 km³
Total Mass - Answers 1.41 billion billion metric tons
Average Depth - Answers 3,682 meters
Greatest depth - Answers 10,994 meters
Mean ocean crust thickness - Answers 6.5 kilometers
Average temperature - Answers 3.9 degrees C
Average salinity - Answers 34,482 grams per kilogram
Average elevation of land - Answers 840 meters
Age - Answers 4.5 billion years
What percent of Earth's water on or near the surface is contained in the ocean? - Answers 97%
What percent of Earth's water on or near the surface is held in land ice, groundwater, and freshwater
lakes or rivers? - Answers 2.5%
What diameter would all of Earth's water be if it were gathered into a sphere? - Answers 1,380 km
What depth would all of Earth's water be if all of Earth's contours were leveled? - Answers 2686 meters
How many oceans are there? - Answers 5 Oceans: Pacific, Atlantic, Indian, Southern, Arctic
Average Land Elevation - Answers 840 meters
How many times larger is the average ocean depth than the average land elevation? - Answers 4.5
, Where do half of all humans live? - Answers Within 240 km of a coastline
What percent of the Earth's mass does the ocean account for? - Answers 0.02%
What percent of the Earth's volume does the ocean account for? - Answers 0.13%
What percent of freshwater do Glaciers, groundwater, permafrost, and surface/atmospheric water
make up? - Answers Glaciers - 68.7%
Groundwater - 30.1%
Permafrost - 0.8%
Surface/atmospheric water - 0.4%
What percent of Surface/atmospheric water do Freshwater lakes, soil moisture, atmosphere, wetlands,
rivers, and biota make up? - Answers Freshwater lakes - 67.4%
Soil moisture - 12.2%
Atmosphere - 9.5%
Wetlands - 8.5%
Rivers - 1.6%
Biota - 0.8%
Define Oceanography AKA Marine Science - Answers The scientific study of the ocean, its associated life-
forms, and its bordering lands
What do Marine Geologists do? - Answers Focus on questions such as the composition of inner Earth,
the mobility of the crust, the characteristics of seafloor sediments, and the history of Earth's ocean,
continents, and climate.
Their work includes earthquake prediction and the distribution of valuable resources.
What do physical oceanographers do? - Answers Study and observe wave dynamics, currents, and
ocean-atmosphere interaction
What do chemical oceanographers do? - Answers Study the ocean's dissolved solids and gases and their
relationships to the geology and biology of the ocean as a whole.
What do climate specialists do? - Answers Investigate the ocean's role in Earth's changing climate. Their
predictions of long-term climate trends are becoming increasingly important as pollutants change
Earth's atmosphere.
