Florida Science Grade 8

Chapter 19: Oceanography

Interactions of Living Things

1
Where does the continental shelf begin?
A)at the bottom of the continental slope
B)at the shoreline
C)at the ocean floor
D)at the mid-ocean ridge
2
Which is longer, the continental shelf or the continental slope?
A)continental slope
B)They are the same length.
C)continental shelf
D)Their lengths differ.
3
How deep do abyssal plains go?
A)40 to 60 km below the ocean surface
B)4,000 to 6,000 m below the ocean surface
C)4,000 to 6,000 km below the ocean surface
D)400 to 600 m below the ocean surface
4
Where do most ocean trenches occur?
A)mid-ocean ridge
B)abyssal plains
C)continental shelf
D)convergent boundaries
5
Which is one of the most abundant mineral resource in the ocean?
A)water
B)oxygen
C)gold
D)crude oil
6
What process deposits materials in the deep ocean?
A)volcanic deposits
B)dissolved gases
C)precipitation
D)underground streams
7
What does the ocean floor look like?
A)smooth
B)sloping
C)mountainous
D)flowing
8
Where does most of the energy come from that fuels ocean life?
A)land plants
B)land animals
C)dissolved gases
D)the Sun
9
An example of a food chain is __________.
A)herring — cod — seal — shark — phytoplankton — copepod
B)herring — shark — seal — cod
C)cod — copepod — herring — phytoplankton — seal — shark
D)phytoplankton —copepod— herring— cod — seal — shark
10
Which is NOT a characteristic of plankton?
A)large animals
B)drift in currents
C)many are single-celled organisms
D)some feed on other plankton
11
Which is an example of a benthic animal?
A)snail
B)whale
C)shark
D)jellyfish
12
What must animals that live on a beach adapt to?
A)changing shape of the beach
B)new plants growing on the beach
C)deep water
D)dry habitats
13
Estuaries contain __________.
A)salt water only
B)freshwater only
C)saltwater and freshwater
D)polluted water
14
When you look at coral on a reef, what are you seeing?
A)the actual coral animals themselves
B)deposits from fishes
C)the hard shells of the coral animals
D)mineral deposits from water
15
A pollutant is any substance that __________.
A)comes from humans
B)damages organisms and interferes with life processes
C)is synthetic
D)comes from nature but is harmful to the environment
16
Which is not a source of ocean pollution?
A)sewage
B)oil spill
C)sediment
D)smokestacks
17
What is a fish kill?
A)when fish die from lack of oxygen
B)when algae grows uncontrolled
C)when algae dies
D)when fish kill algae for food
18
What is an example of how solid waste can be harmful to the ocean?
A)Solid waste can dissolve in water.
B)Solid waste can fill in trenches.
C)Animals can get tied up in debris.
D)Plants can be poisoned by the waste.
19
Even if you don't live near an ocean, why is ocean pollution a concern?
A)Oceans are important tourist areas.
B)Ocean pollution can poison rivers.
C)Every animal's life is tied to the ocean.
D)Pollution in the ocean hasn't reached all parts of the ocean yet.
20
Why are laws protecting the ocean difficult to enforce?
A)The laws are unreasonable.
B)No country has control of all the oceans.
C)No one has made these laws.
D)The United States controls all of the oceans.
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Notice before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.