what is one reason why the east coast has so many bays and islands?

What is one reason why the East Coast has so many bays and islands quizlet?

What is one reason why the East Coast has so many bays and islands? Water released from melting glaciers raised sea level. the sides have a higher concentration of rocks and other debris. What carved this U-shaped valley?

What likely caused much of the damage shown in this photograph in the 1906?

What likely caused much of the damage shown in this photograph in the 1906 San Francisco earthquake? They compress and then expand the rock in the direction the wave travels.

What is the primary reason an increase in glaciers on land would cause sea level to fall quizlet?

What is a primary reason that an increase in glaciers on land would cause sea level to fall? Glaciers tie up large volumes of water that would otherwise be in the sea.

Why are there two high tides and two low tides each day quizlet?

There are two high tides and two low tides in most coastal regions because at any given time there are two place on earth where a high tide occurs and two places where a low tide occurs. The parts of the earth closest and furthest from the moon are where the high tides occurs and low tides happen in between.

Which of the following is a reason why rock units may change from one section to another quizlet?

Which of the following is a reason why rock units may change from one section to another? … They can be buried and decay, leaving a cavity in the rock. They can be preserved in ancient tree sap. They can be too small to see but can build diagnostic features in the rocks.

What happens to the erosive power of a stream as velocity increases?

What happens to the erosive power of a stream as velocity increases? Erosion decreases. … Base level generally is near the steepest part of a stream’s profile. Most streams have lower gradient close to their base level.

Which particles of sediment are most likely to be transported as suspended load?

Suspended load generally consists of fine sand, silt and clay size particles although larger particles (coarser sands) may be carried in the lower water column in more intense flows.

What is a primary reason an increase in glaciers on land?

an increase in snow cover causes the atmosphere to heat up which causes more evaporationC. glaciers depress the land surface, which pulls sea level down with itD.

What caused a relative rise in sea level along the East Coast of the US approximately 20000 years ago quizlet?

What caused a relative rise in sea level along the East Coast of the U.S. approximately 20,000 years ago? Entisols. … How does the rate of seafloor spreading affect the sea level? Faster spreading produces broader ridges that displace water and expand the oceans.

Which of the following would cause sea level to rise?

The two major causes of global sea level rise are thermal expansion caused by warming of the ocean (since water expands as it warms) and increased melting of land-based ice, such as glaciers and ice sheets.

What is the main reason why there is a second high tide each day?

Because the Earth rotates through two tidal “bulges” every lunar day, coastal areas experience two high and two low tides every 24 hours and 50 minutes. High tides occur 12 hours and 25 minutes apart.

Why are there two high tides that is what causes the tide on the side of the Earth away from the moon quizlet?

The moon’s gravity pulls on the Earth. This causes the water that faces the moon to bulge. … Water bulges away from the moon on earth’s far side. As a result, these two sides of the earth experience high tide.

When high tides are higher and low tides are lower than normal?

This produces moderate tides known as neap tides, meaning that high tides are a little lower and low tides are a little higher than average. Neap tides occur during the first and third quarter moon, when the moon appears “half full.”

Where was the oldest rock found?

Bedrock along the northeast coast of Hudson Bay, Canada, has the oldest rock on Earth. Canadian bedrock more than 4 billion years old may be the oldest known section of the Earth’s early crust.

What happened between deposition of Units 1 and 2?

What happened between deposition of units 1 and 2? … The boundary between the two units indicates that for a time there was either erosion or no deposition.

How would we use isotopic ages to infer the ages of the upper and lower unit in this diagram?

How would we use isotopic ages to infer the ages of the upper and lower unit in this diagram? The lower unit would be younger than an age on the crosscutting dike. The upper unit would be older than an age determined on pebbles of the dike in that unit.

Why does velocity increase downstream?

Velocity increases as more water is added to rivers via tributary rivers. This means that less of the water is in contact with the bed of the river and the mouth so there is less energy used to overcome friction. Hence rivers flow progressively faster on their journey downstream.

Why does stream velocity change from season to season?

The flow of a stream is directly related to the amount of water moving off the watershed into the stream channel. … It also changes during different seasons of the year, decreasing during the summer months when evaporation rates are high and shoreline vegetation is actively growing and removing water from the ground.

Why is the velocity larger for the bottom stream of water?

In fact, the velocity just below the surface is typically a little higher than right at the surface because of friction between the water and the air. On a curved section of a stream, flow is fastest on the outside and slowest on the inside.

Why is sediment transport important?

Sediment transport is applied to solve many environmental, geotechnical, and geological problems. Measuring or quantifying sediment transport or erosion is therefore important for coastal engineering. … Movement of sediment is important in providing habitat for fish and other organisms in rivers.

What causes the movement of sediments from one place to the other?

Sediment moves from one place to another through the process of erosion. … Erosion can move sediment through water, ice, or wind. Water can wash sediment, such as gravel or pebbles, down from a creek, into a river, and eventually to that river’s delta.

What makes up the suspended load of a stream?

Suspended load is composed of fine sediment particles suspended and transported through the stream. These materials are too large to be dissolved, but too small to lie on the bed of the stream (Mangelsdorf, 1990). Stream flow keeps these suspended materials, such as clay and silt, from settling on the stream bed.

What causes glaciers to move?

Glaciers move by a combination of (1) deformation of the ice itself and (2) motion at the glacier base. … This means a glacier can flow up hills beneath the ice as long as the ice surface is still sloping downward. Because of this, glaciers are able to flow out of bowl-like cirques and overdeepenings in the landscape.

What causes a glacier?

A glacier forms when snow accumulates over time, turns to ice, and begins to flow outwards and downwards under the pressure of its own weight. In polar and high-altitude alpine regions, glaciers generally accumulate more snow in the winter than they lose in the summer from melting, evaporation, or calving.

Why are glaciers called glaciers?

A glacier is a huge mass of ice that moves slowly over land. The term “glacier” comes from the French word glace (glah-SAY), which means ice. Glaciers are often called “rivers of ice.” Glaciers fall into two groups: alpine glaciers and ice sheets.

What is one of the most important aspects about West Antarctica with respect to global sea level quizlet?

What is one of the most important aspects about West Antarctica with respect to global sea level? It has large floating ice shelves that could be detached and melted.

What happens to a wave to cause it to break quizlet?

Waves break when the shape of the wave becomes too steep and this usually happens as waves travel from deep water to shallow water.

What are some possible influences of ocean currents on glaciation?

What are some possible influences of ocean currents on glaciation? Cold currents can cool the land allowing glaciers to form if there is sufficient precipitation. Cold currents can inhibit the growth of glaciers because they put less moisture into the atmosphere.

Which is the main reason that sea levels have risen recently?

Global sea levels are rising as a result of human-caused global warming, with recent rates being unprecedented over the past 2,000-plus years. Sea level rise is caused primarily by two factors related to global warming: the added water from melting ice sheets and glaciers and the expansion of seawater as it warms.

What is the main reason for sea level rise quizlet?

The two major causes of global sea-level rise are thermal expansion caused by the warming of the oceans (since water expands as it warms) and the loss of land-based ice (such as glaciers) due to increased melting.

What are the 3 causes of sea level rise?


what is one reason why the east coast has so many bays and islands?



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