Oceanography Earth's History
Man knows more about outer space than he knows about the ocean.
a. True
b. False
a. True
The purest natural source of water is
a. snow.
b. rain.
c. fast-flowing rivers.
d. mountain lakes.
a. snow
The most common of all the plants in the sea are
a. kelp.
b. algae.
c. sea plants.
d. sea ferns.
b. algae
What heavenly bodies are invisible because of their relatively small size?
a. Asteroids
b. Comets
c. Meteoroids
d. Aerolites
c. Meteoroids
The bottom of the ocean is referred to as the deep ocean, the deep sea, the deep ocean basin or the
a. abyss.
b. height.
c. summit.
d. seamount.
a. abyss
Continental drift is
a. slow separation of continents over time.
b. erosion of continental seacoasts.
c. pile-up of dirt caused by wind.
d. floating across an ocean between continents.
a. slow separation of continents over time
Tidal energy can be used to generate electricity by
a. using tidal motion to turn turbines.
b. using chemicals in tidal water.
c. using temperature changes during tides.
d. using water pressure changes during tides.
a. using tidal motion to turn turbines.
Over 1,000 years ago a complex ecological fish-farming system was developed. In what country was this system developed?
a. Japan
b. Spain
c. China
d. America
c. China
Comets are believed to be composed of
a. hydrogen and oxygen.
b. frozen gases and dust.
c. nitrogen and sodium.
d. frozen dust and carbon.
b. frozen gases and dust
Beyond the continental shelf, the ocean bottom drops off
a. very gradually.
b. suddenly.
c. about 7 to 10 feet per mile.
d. about 8 to 12 feet per mile.
b. suddenly
The most famous earthquake belt in the United States is found along the East Coast.
a. True
b. False
b. False
A ______________ is a long, smooth wave coming from a distant storm.
a. tsunami
b. fetch
c. swell
d. breaker
c. swell
The most poisonous of all fish is the
a. scorpion fish.
b. weeverfish.
c. jellyfish.
d. mollusk.
a. scorpion fish
What heavenly bodies in our solar system are the most plentiful and number more than one hundred billion?
a. Asteroids
b. Comets
c. Aerolites
d. Tektites
b. Comets
How are submarine canyons formed?
a. Glaciation
b. Tidal currents
c. Underwater currents and landslides
d. All of the answers are correct
d. All of the answers are correct
The core of the Earth is made up of
a. copper and cobalt.
b. iron and nickel.
c. zinc and silver.
d. gold and platinum.
b. iron and nickel
During the new and full moons, the tides are highest and lowest because the forces of the sun and moon work together. The resulting tides are called
a. neap tides.
b. ebb tides.
c. flow tides.
d. spring tides.
d. spring tides
Submarine cables containing telephone and electric power, and underwater pipelines, have been attacked by shrimp-like animals called
a. Teredos.
b. Barracudas.
c. Gribbles.
d. Moray eels.
c. Gribbles
The head of a comet usually containing a nucleus is known as a
a. tail.
b. coma.
c. tektite.
d. aerolite.
b. coma
The North Atlantic Ocean began to form about 200 million years ago and the South Atlantic Ocean about 150 million years ago.
a. True
b. False
a. True
Geological plates are
a. a flat region of the earth's crust.
b. ancient artifacts used for eating.
c. large flat circular rock formations.
d. large segments of the earth's surface.
d. large segments of the earth's surface
The only chemicals currently taken from ocean water commercially are
a. sodium and calcium.
b. magnesium and bromine.
c. potassium and fluorine.
d. boron and iodine.
b. magnesium and bromine
What is the most destructive oceanographic condition for marine life in the oceans of the world?
a. Sunlight
b. Upwelling
c. Large sea animals
d. El Nino
d. El Nino (Spanish for 'the Christ Child') refers to a warming of the ocean surface, or above-average sea surface temperatures, in the central and eastern tropical Pacific Ocean.
In 1894 Admiral Robert Peary found the largest meteorite ever in the western hemisphere. In what country was it discovered?
a. Candor
b. Greenland
c. America
d. France
b. Greenland
Coring tubes are used to
a. collect water samples.
b. collect ocean bottom sediments at different depths.
c. collect gold from the bottom of the ocean.
d. collect sands from the continental shelf and slope.
b. collect ocean bottom sediments at different depths