Question 1

Bioturbation is the ________.

Accepted Answer

Bioturbation refers to the mixing of sediment by burrowing organisms. These organisms can include worms, clams, and other creatures that disturb the sediment as they move through it. Bioturbation is an important process in many marine and freshwater environments, as it can help to recycle nutrients and oxygenate the sediment.

Question 2

How would the Coriolis affect the space station?

Accepted Answer

The Coriolis effect influences objects moving within Earth's atmosphere. The space station orbits outside the atmosphere, so it is not affected by the Coriolis effect.

Question 3

In the figure below,which letters represent the wave height and wavelength?

Accepted Answer

The answer of In the figure below,which letters represent the...

Question 4

Longshore currents ________ the shoreline.

Accepted Answer

Longshore currents flow parallel to the shoreline. They are caused by the angle at which waves approach the shore, and they move sediment and water down the coastline.

Question 5

Barrier islands are constantly moving in the direction of ________.

Accepted Answer

Barrier islands are formed by the accumulation of sedimentary materials parallel to the coastline, and they are constantly in motion along the direction of the longshore drift, which is the movement of sediment caused by waves moving to the shore at an angle. As waves approach the shoreline obliquely, their energy is concentrated along the shore and generates currents that move sediment along the coast in a zigzag pattern. This movement of sediment causes the barrier islands to migrate landward over time.

Question 6

What will eventually happen to the headlands in the figure below?

Accepted Answer

Headlands are made of hard rock that resists erosion, while the bays are made of soft sediments that are easily eroded. Over time, the waves and currents will wear away the softer rock of the bays, leaving the harder rock of the headlands exposed. This process will continue until the headlands are eroded back to form a straight line of cliffs.

Question 7

Which of the following figures shows a coast experiencing high tide?

Accepted Answer

The answer of Which of the following figures shows a...

Question 8

If the wind is blowing parallel to a coast,will it create an upwelling current or downwelling current?

Accepted Answer

The answer of If the wind is blowing parallel to...

Question 9

A wave will disturb the water to a depth equal to ________.

Accepted Answer

A wave typically disturbs the water to a depth of one-half of its wavelength, known as the wave base.

Question 10

In the figure below,which direction is the longshore drift?

Accepted Answer

The answer of In the figure below,which direction is the...

Question 11

Rip currents ________ the shoreline.

Accepted Answer

Rip currents flow directly away from the shoreline, pulling water back out to sea.

Question 12

In the figure below,which letters represent the crest and trough?

Accepted Answer

The answer of In the figure below,which letters represent the...

Question 13

When the sea level rises,an ocean may invade a river valley,producing a nearshore body of water of mixed and variable salinity termed a(n)________.

Accepted Answer

An estuary is a body of water in which freshwater from rivers mixes with salt water from the ocean, creating a unique environment with variable salinity levels. It forms when a river valley is flooded by rising sea levels. A lagoon is also a body of water near the shore, but it is typically separated from the ocean by a barrier island or coral reef. Jetty and atoll are not appropriate choices for the described scenario.

Question 14

Scientists believe that approximately 60 million years ago the closing of the Isthmus of Panama changed the climate of Earth so severely that winters in Europe became 10°C warmer than they had been.Why did this happen?

Accepted Answer

The closing of the Isthmus of Panama caused warm Caribbean Sea waters to be forced up into the north Atlantic Ocean. This warmed the climate in Europe by 10°C during winters.

Question 15

If a beach is in an east-west orientation and the waves are approaching the shore from a southeasterly direction,in which direction will the longshore drift be?

Accepted Answer

Longshore drift occurs parallel to the shore. With waves coming from the southeast, the sediment will be pushed in a westerly direction along the east-west oriented beach.

Question 16

The castle on the island of Mont Saint-Michel,France,can be accessed ________ a day during ________ tide,but ________ during neap tide.

Accepted Answer

The answer of The castle on the island of Mont...

Question 17

High tide will be ________ during a full moon than normally.

Accepted Answer

During a full moon, the gravitational pull of the moon on the Earth's oceans is stronger, causing the tides to be higher than they would be normally.

Question 18

Why is a spring tide so much higher than a normal high tide?

Accepted Answer

A spring tide occurs when the Sun, Earth, and Moon are aligned, which enhances the gravitational pull on Earth's oceans, leading to higher high tides.

Question 19

Waves ________.

Accepted Answer

The answer of Waves ________.
...

Question 20

In the figure below,which way is the wave moving?

Accepted Answer

The answer of In the figure below,which way is the...

Quiz 18: Restless Realm: Oceans and Coasts