WorksheetsUnit 1 Exam: Introduction to Marine Science
Total questions: 36
Worksheet time: 3hrs 0mins
A nonliving element in an ecosystem is a/an ---
biotic factor.
abiotic factor.
All living things or organisms in an ecosystem are
None
biotic factors
abiotic factors
Is sunlight an abiotic or biotic factor?
abiotic
biotic
Fish
Biotic
Abiotic
True of False: The temperature of the ocean water decreases as the depth of the water increases.
True
False
A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.
Population
Community
Habitat
Ecosystem
Salinity is described as -
The plant life of in the ocean
The variety of organisms in the ocean
The pH of the ocean
The saltiness of the ocean
The vast majority (over 95%) of aquatic ecosystems are made up of this type of environment.
Freshwater
Brackish water
Marine (saltwater)
Bottled water
A biotic element of an aquatic ecosystem is:
plankton
pH (potential hydrogen)
topography
temperature
This ecosystem is where freshwater and saltwater meet.
Ponds
Rivers
Esturaies
Deep Ocean Abyssal Plains
Intertidal ecosystems are submerged during high tide and exposed during low tide.
True
False
Take a look at the photo and decide which answer fits.
Kelp Forest
Coral Reef
Rocky Seashore
Sandy Beach
Take a look at the photo and decide which answer best fits.
Kelp Forest
Rocky Seashore
Coral Reef
Freshwater Bog
Take a look at the photo and decide which answer best fits.
Kelp Forest
Coral Reef
Open Ocean
Esturay
Ocean acidification is a result of an increase of which of the following elements?
Nitrogen
Carbon
Sulfer
lead
Which process would most likely increase the dissolved oxygen level in a freshwater lake?
algae bloom
lake turnover
photosynthesis
respiration
What does DO stand for?
Dissolved oxygen
Dissolved osmium
Dissolved ozone
As water temperature increases what happens to dissolved oxygen levels?
increase
decrease
stay the same
flucuate
The Photic Zone (Sunlight Zone) houses 90% of life in our oceans. Why?
Phytoplankton (base of the food chain) conducting phtosynthesis
Apex predators (top of the food chain) consuming large marine organisms
Most ocean life tends to float to the top layer of the ocean
This is a great place for fish to hide from predators
As saltwater evaporates in a tide pool what happens to the salinity level of that water?
decreases
stays the same
increases
These barnacles are:
Biotic
Abiotic
Depending on the surrounding soil and bedrock most lakes, ponds, and streams have a pH of:
6 to 8
0 to 1
13 to 14
Exactly 7 Always!
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
80%
90%
10%
20%
The arrows in a food chain or web represents what?
They point to the organism that is being eaten.
It shows how sunlight flows within an ecosystem.
They show what direction the energy is flowing between organisms.
They represent how water is transferred within a habitat.
Organisms that create their own energy from sunlight or chemicals
Herbivore
Omnivore
Autotroph
Heterotroph
An organism that obtains energy from eating animal tissue.
Omnivores
Carnivores
Herbivores
Animals
An organism that obtains energy by consuming plants and animals.
Omnivores
Carnivores
Herbivores
Humans
Apex Predator
Primary Producer
Primary Consumer
All of these are primary consumers
How much of the world's water supply is freshwater?
97%
1%
3%
100%
Which ecosystem would you most likely find a kelp forest?
Coastal Ocen
Open Ocean
Estuary
River
These snailfish were recently discovered in the Atacama Trench. We can assume from the picture that atleast one source of energy for this new species comes from:
Detritus
The Sun
Mineral deposits
Inorganic matter
Brine pools are found on the seafloor and can be up to 8 times higher in salinity than the ocean water surrounding them. Why do these pools settle on the ocean floor?
they are less dense than than the ocean water
they are more dense than the ocean water
they are equally as dense as the ocean water
density has nothing to do with it
Eutrophication is caused by
excess nutrients building up in the water.
industrial point-source pollution.
unlined landfills and septic tanks.
wastewater from homes mixing with drinking water.
How does eutrophication cause the death of aquatic organisms
the build up of carbon dioxide in the water
the lack of nitrogen in the water
the lack of carbon dioxide in the water
the lack of oxygen in the water
