The diagram below shows a formation of volcanic islands due to a hot spot in Earth's mantle.

Question

Identify which island is the oldest? How do you know?



(1 point)
Responses

Island A is the oldest because it is farthest from the hot spot.
Island A is the oldest because it is farthest from the hot spot.

It is impossible to tell which island is oldest.
It is impossible to tell which island is oldest.

Island B is the oldest because it is farthest from the hot spot.
Island B is the oldest because it is farthest from the hot spot.

Island A is the oldest because it is currently being formed over the hot spot.
Island A is the oldest because it is currently being formed over the hot spot.
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Answer 1

The correct response is:

Island A is the oldest because it is farthest from the hot spot.

In volcanic island chains formed by hot spots, older islands are typically located farther away from the current volcanic activity (the hot spot), while younger islands are closer to it. As the tectonic plate moves over the stationary hot spot, new islands are formed, and the oldest island is the one that is farthest away from that active center.

Answer 2

The map below shows the location of volcanoes (red) on Earth.



What can you conclude about the location of volcanoes?



(1 point)
Responses

Nothing can be determined from the image about volcanoes.
Nothing can be determined from the image about volcanoes.

Most volcanoes occur in the middle of a continental plate.
Most volcanoes occur in the middle of a continental plate.

Most volcanoes are formed by hot spots in the middle of the ocean.
Most volcanoes are formed by hot spots in the middle of the ocean.

Most volcanoes are common along plate boundaries

Answer 3

The correct response is:

Most volcanoes are common along plate boundaries.

Volcanoes are predominantly found along tectonic plate boundaries, where plates interact—such as convergent boundaries (where one plate is subducted beneath another) and divergent boundaries (where plates are moving apart). This is where most volcanic activity occurs, rather than being in the middle of continental plates or primarily at hot spots.

Answer 4

Use the drop down menu to correctly complete the statement on earthquakes.(3 points)
Earthquakes occur when two tectonic plates
. When this occurs,
is released in the form of seismic waves. Earthquakes are most common along
boundaries.

Answer 5

Here’s how you can complete the statement:

Earthquakes occur when two tectonic plates slide past each other, collide, or move apart. When this occurs, energy is released in the form of seismic waves. Earthquakes are most common along plate boundaries.

So the completed statement would be:

Earthquakes occur when two tectonic plates slide past each other, collide, or move apart. When this occurs, energy is released in the form of seismic waves. Earthquakes are most common along plate boundaries.

Answer 6

Where do earthquakes normally occur?(1 point)
Responses

At the center of Earth's core
At the center of Earth's core

At the edges of tectonics plates
At the edges of tectonics plates

At the center of tectonic plates
At the center of tectonic plates

At the edges of Earth's bodies of water

Answer 7

The correct response is:

At the edges of tectonic plates.

Earthquakes typically occur along the boundaries of tectonic plates where plates interact with each other, whether they are colliding, sliding past each other, or moving apart.

Answer 8

4 states record seismic waves from an earthquake in Nevada.

In the image below, the star, ,represents the epicenter of the earthquake. The red circles,, represent the location of the seismic stations that record the waves of the earthquake.



Which states will record fewer seismic waves than the others.

(1 point)
Responses

California and Nevada
California and Nevada

Montana and New Mexico
Montana and New Mexico

Nevada and Montana
Nevada and Montana

California and New Mexico

Answer 9

The correct response is:

Montana and New Mexico.

Typically, states that are farther away from the epicenter of an earthquake will record fewer seismic waves compared to those that are closer. If California and Nevada are located nearer to the epicenter, they are likely to record more seismic waves than Montana and New Mexico, which are further away.

Answer 10

Use the drop down menu to correctly complete the statement. (1 point)

is the process that allows scientists to locate the epicenter of an earthquake by measuring the arrival times between P and S waves.

Answer 11

The correct completion for the statement is:

Triangulation is the process that allows scientists to locate the epicenter of an earthquake by measuring the arrival times between P and S waves.

So the completed statement would be:

Triangulation is the process that allows scientists to locate the epicenter of an earthquake by measuring the arrival times between P and S waves.