Қаріп өлшемі
Жұмыс парақтарыExploring Oceans
Total сұрақ: 12
Worksheet time: 6mins
Marine snow is a source of
bacteria
oxygen
light
food
Prior to 1977, why did scientists believe that only very basic life forms existed in the deep ocean?
They thought ocean currents were too strong to support life.
They thought that hydrothermal vents released poisonous gases.
They thought there was no food source.
They thought the temperatures were too cold.
Why were scientists surprised to find a "Garden of Eden" near the hydrothermal vents?
It was thought that the environment could not support life.
The vents were not expected to exist.
The creatures were just like those living on land.
The scientists were geologists, not biologists.
According to the article Living in the Dark, what is one way in which technology is making ocean research easier?
Newer cameras are smaller and less expensive.
Larger and faster undersea vehicles are being built.
Video footage of dives can be sent to scientists around the world.
Unmanned remote vehicles can be used instead of divers.
How do cold seep communities affect Earth's climate?
They leak cold air into the atmosphere.
They prevent greenhouse gases from escaping.
They form around large deposits of oil and natural gas.
They release a large amount of methane into the atmosphere.
What conclusion can scientists draw from seeing the same species at whale falls, cold seeps, and hydrothermal vents?
The communities develop in a similar way in all three habitats.
Species use whale falls as stepping stones from one habitat to another.
Whale falls support the largest number of different species.
Each habitat is isolated from the others by vast ocean distances.
According to the author, Walsh and Picard's exploration of the Mariana Trench is "largely forgotten today" because people were more interested in the race to the (a) .
Why does Cousteau (the author) think that the time may now be right to focus on ocean research?
The space shuttle program has come to an end.
There is nothing more to be learned from space research.
Ocean research will cost less than the space program.
Ocean researchers can learn from discoveries made in space.
Cousteau claims that "we've only dipped our toes in the water" of ocean exploration. What evidence supports his statement?
The ocean covers more than 70% of our planet.
His grandfather co-invented the SCUBA system.
We've explored only about 10% of the ocean.
The ocean supports life as we know it.
According to Cousteau, the ocean contains knowledge waiting to be discovered. He compares this to . . .
achieving a perfect score on a test.
winning a race.
a surprise party.
unopened presents under the tree.
Why does the author mention that the $200 billion space shuttle program has ended?
to suggest it was a waste of money
to suggest it should be started up again
to suggest that the money might be available for ocean research
to suggest it be used to save the rainforest
Phillipe Cousteau's main purpose for writing this commentary was to persuade people of the importance of exploring the (a) .
