Tides Flashcards
The example of a whale beached by the tides illustrates that *
tides that impact marine life
Tides will be most visible *
on shores and coasts
All of the following influence tides EXCEPT *
the air temperature
A high tide will occur *
on both sides of the earth at the same time
Which of the following explains why tides occur every 12 hours and 25 minutes? *
Variations in the land and depth of water make the tides uneven.
In the United States, the moon’s pull is strongest during which season? *
fall
When swimming at the beach, you are most likely to encounter *
tidal currents
All of the following can influence tides EXCEPT *
shoreline
Black sand can be found when *
sediments contain volcanic ash
How many of the Solomon Islands have disappeared because of erosion and increasing sea levels? *
five
Brackish water is most commonly found in *
estuaries
Which of the following is true of brackish water? *
The salinity of the water can vary with the tides.
Which of the following is a benefit of inhabiting an estuary? *
There are fewer strong ocean currents.
All of the following are characteristics of the blue crab EXCEPT *
it has no natural predators
Which is true of the organisms that live in estuaries? *
They can adapt to changing waters and temperatures.
An intertidal zone is *
the area between high and low tides
An ecosystem includes all of the following EXCEPT *
organisms that live in similar environments in other regions
How do barnacles get nutrients? *
They filter microscopic organisms from the waters.
The organisms that can tolerate the most time out of water would live in the *
spray zone
Which is true of the low-tide zone? *
It is almost always under water.
All of the following are part of the benthic community EXCEPT *
bottom-feeding fish
A food web includes which of the following? *
all of the predator/prey relationships in an ecosystem
The biotic elements of an ecosystem include all of the following EXCEPT *
physical components of the environment, like rocks and sand
Which of the following is the benefit of a symbiotic relationship? *
It harms neither of the organisms involved.
Any part of an ecosystem that is abiotic is *
nonliving
Why are invasive species a problem for ecosystems? *
They greatly disrupt existing food webs.
Secondary succession is often found in which of the following? *
coral reefs
How does the ocean help lessen the effects of global warming? *
It absorbs a lot of carbon.
Which of the following is true of the water at the bottom of the ocean? *
It is particularly rich in nutrients.
The main benefit of an upwelling is that it *
brings new nutrients into an underwater region
Both currents and tides are predictable patterns of movement in water. *
True
When the pull of the moon is strongest, tides will be lowest. *
False
Unusual weather can change the tides. *
True
Secondary succession only occurs on land-based ecosystems. *
F
In most cases, tides will be predictable. *
T
Plants are not part of food chains. *
F
A primary succession does not include any invasive species. *
T
Low tide is the best feeding time for land predators such as sea gulls. *
T
The Solomon Islands are uninhabited, so global warming is not a concern there. *
F
It is common for creatures to be able to live in both the spray zone and low-tide zone. *
F
