Tides

Question 1

The example of a whale beached by the tides illustrates that *

Answer 1

tides that impact marine life

Question 2

Tides will be most visible *

Answer 2

on shores and coasts

Question 3

All of the following influence tides EXCEPT *

Answer 3

the air temperature

Question 4

A high tide will occur *

Answer 4

on both sides of the earth at the same time

Question 5

Which of the following explains why tides occur every 12 hours and 25 minutes? *

Answer 5

Variations in the land and depth of water make the tides uneven.

Question 6

In the United States, the moon’s pull is strongest during which season? *

Answer 6

fall

Question 7

When swimming at the beach, you are most likely to encounter *

Answer 7

tidal currents

Question 8

All of the following can influence tides EXCEPT *

Answer 8

shoreline

Question 9

Black sand can be found when *

Answer 9

sediments contain volcanic ash

Question 10

How many of the Solomon Islands have disappeared because of erosion and increasing sea levels? *

Answer 10

five

Question 11

Brackish water is most commonly found in *

Answer 11

estuaries

Question 12

Which of the following is true of brackish water? *

Answer 12

The salinity of the water can vary with the tides.

Question 13

Which of the following is a benefit of inhabiting an estuary? *

Answer 13

There are fewer strong ocean currents.

Question 14

All of the following are characteristics of the blue crab EXCEPT *

Answer 14

it has no natural predators

Question 15

Which is true of the organisms that live in estuaries? *

Answer 15

They can adapt to changing waters and temperatures.

Question 16

An intertidal zone is *

Answer 16

the area between high and low tides

Question 17

An ecosystem includes all of the following EXCEPT *

Answer 17

organisms that live in similar environments in other regions

Question 18

How do barnacles get nutrients? *

Answer 18

They filter microscopic organisms from the waters.

Question 19

The organisms that can tolerate the most time out of water would live in the *

Answer 19

spray zone

Question 20

Which is true of the low-tide zone? *

Answer 20

It is almost always under water.

Question 21

All of the following are part of the benthic community EXCEPT *

Answer 21

bottom-feeding fish

Question 22

A food web includes which of the following? *

Answer 22

all of the predator/prey relationships in an ecosystem

Question 23

The biotic elements of an ecosystem include all of the following EXCEPT *

Answer 23

physical components of the environment, like rocks and sand

Question 24

Which of the following is the benefit of a symbiotic relationship? *

Answer 24

It harms neither of the organisms involved.

Question 25

Any part of an ecosystem that is abiotic is *

Answer 25

nonliving

Question 26

Why are invasive species a problem for ecosystems? *

Answer 26

They greatly disrupt existing food webs.

Question 27

Secondary succession is often found in which of the following? *

Answer 27

coral reefs

Question 28

How does the ocean help lessen the effects of global warming? *

Answer 28

It absorbs a lot of carbon.

Question 29

Which of the following is true of the water at the bottom of the ocean? *

Answer 29

It is particularly rich in nutrients.

Question 30

The main benefit of an upwelling is that it *

Answer 30

brings new nutrients into an underwater region

Question 31

Both currents and tides are predictable patterns of movement in water. *

Answer 31

True

Question 32

When the pull of the moon is strongest, tides will be lowest. *

Answer 32

False

Question 33

Unusual weather can change the tides. *

Answer 33

True

Question 34

Secondary succession only occurs on land-based ecosystems. *

Answer 34

F

Question 35

In most cases, tides will be predictable. *

Answer 35

T

Question 36

Plants are not part of food chains. *

Answer 36

F

Question 37

A primary succession does not include any invasive species. *

Answer 37

T

Question 38

Low tide is the best feeding time for land predators such as sea gulls. *

Answer 38

T

Question 39

The Solomon Islands are uninhabited, so global warming is not a concern there. *

Answer 39

F

Question 40

It is common for creatures to be able to live in both the spray zone and low-tide zone. *

Answer 40

F