Tides: Rise and Fall of Ocean Water

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What causes the rise and fall of ocean water known as tides?

Global warming effects

Underwater earthquakes

Gravitational attraction among the Earth, Moon, and Sun (correct)

Coriolis effect

Which ecological product of ocean tides is an important strip of seashore submerged at high tide and exposed at low tide?

Freshwater lakes

Intertidal zone (correct)

Deep-sea vents

Coral reefs

What is the term for the stage where tidal currents cease, and the water reaches its highest level at high water?

Turning tide

Flood tide

Ebb tide

Slack water (correct)

Why is the prediction of tides important for coastal navigation?

To predict changes in marine depth due to tidal forces Signup and view all the answers

In addition to oceans, where else can tidal phenomena occur?

Whenever a gravitational field that varies in time and space is present Signup and view all the answers

What is the main difference between spring tides and neap tides?

Spring tides have higher high waters and lower low waters, while neap tides have less extreme tidal conditions. Signup and view all the answers

Why do northern and southern latitudes commonly face diurnal tides?

Due to the inclination of the moon's orbit in relation to the earth's axis. Signup and view all the answers

What causes the daily inequality in height between the two high waters on a given day?

The diurnal contribution combined with the Moon's orbit inclination. Signup and view all the answers

How often does a change in the daily inequality between high waters typically occur?

It changes with time and is generally small when the Moon is over the equator. Signup and view all the answers

Which factor influences the sun's effect on tides?

The earth's inclination in relation to the sun. Signup and view all the answers

What characterizes an area with diurnal tides?

Encountering only one tide cycle per day Signup and view all the answers

What causes the two high tides and two low tides in a day known as semidiurnal tides?

Rotation of the earth upon its own axis Signup and view all the answers

Why are high and low tides about 50 minutes later every day?

The additional time taken for the moon to be in the same position relative to a point on the earth Signup and view all the answers

What is the major factor causing tidal variations on Earth?

Moon's gravitational pull on water bodies Signup and view all the answers

What factor determines the tidal range according to the text?

The distance between the Earth and the Moon Signup and view all the answers

At what point do perigean tides, with the largest tidal range, occur?

When the Moon is at perigee coinciding with a new or full moon Signup and view all the answers

Intertidal ecology focuses on the study of ecosystems where organisms live:

Between low and high tide lines Signup and view all the answers

Which type of intertidal community is characterized by highly variable and often hostile environments?

Rocky shore communities Signup and view all the answers

What do organisms living in intertidal habitats need to evolve to cope with?

Hostile and variable conditions Signup and view all the answers

What causes the variation in tidal ranges between spring and neap tides?

The gravitational forces of the Sun and Moon reinforcing or canceling each other Signup and view all the answers

What is the origin of the term 'spring tide'?

It comes from the verb meaning 'to jump' or 'to leap up' Signup and view all the answers

What is the term used to describe the alignment of the Sun, Moon, and Earth during new and full moons?

Syzygy Signup and view all the answers

Which of the following is an adaptation that allows some intertidal organisms to survive exposure during low tide?

Secreting a glue-like mucus to stick to rocks Signup and view all the answers

What is a common adaptation found in some intertidal fishes that allows them to survive in oxygen-poor tide pools during low tide?

Developing lungs to breathe air Signup and view all the answers

Which of the following is NOT mentioned as an adaptation for intertidal organisms to survive during low tide?

Growing gills to extract oxygen from air Signup and view all the answers

What is one of the problems faced by intertidal communities?

Overexploitation and invasive species Signup and view all the answers

What is one potential solution mentioned in the text to protect intertidal regions?

Establishing Marine Protected Areas Signup and view all the answers

What is the root-like structure called that kelp uses to attach to rocks or mussels?

Holdfasts Signup and view all the answers

How do changes in salinity affect tide pool organisms?

They must adapt to increases or decreases in salt throughout the day Signup and view all the answers

What do some tide pool animals do to find shelter from the sun?

They hide under plants in the tide pool Signup and view all the answers

Which of the following is NOT an example of an invertebrate found in tide pools?

Fish Signup and view all the answers

What is an advantage of living in the intertidal zone for algae and other intertidal plants?

They grow in the abundant sunlight and support an entire food chain of animals Signup and view all the answers

What is a benefit of constant wave action in tide pools?

It supplies the tide pool with nutrients and oxygen Signup and view all the answers

Which of the following is NOT an advantage of living in the intertidal zone?

There is a lack of predators Signup and view all the answers

Which of the following is NOT mentioned as part of the marine life found in the intertidal zone?

Whales Signup and view all the answers