The Earth Layers Quiz: Test!

2.

What layers do the Lithosphere consist of?

Crust and Mantle
Mantle and Outer Core
Inner Core and Outer Core
Crust and Inner Core

Correct Answer

A. Crust and Mantle

Explanation

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the uppermost part of the mantle. The crust is the thin, solid outermost layer of the Earth, while the mantle is the layer beneath the crust. Therefore, the correct answer is "Crust and Mantle."

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1

3.

Which of the cores in our Earth is LIQUID?

Inner Core
Outer Core

Correct Answer

A. Outer Core

Explanation

The outer core of the Earth is liquid. It is composed of molten iron and nickel, and it surrounds the solid inner core. The high temperatures and pressures in the Earth's interior cause the outer core to remain in a liquid state. This liquid outer core is responsible for generating the Earth's magnetic field through a process called the dynamo effect.

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4.

Oceanic crust is MORE DENSE than Continental crust

True
False

Correct Answer

A. True

Explanation

The oceanic crust is denser than the continental crust because it is primarily composed of basalt, which is a denser rock compared to the granite that makes up the continental crust. The oceanic crust is also thinner and younger than the continental crust, which contributes to its higher density. The denser oceanic crust sinks below the less dense continental crust at subduction zones, forming deep ocean trenches.

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5.

Why does the mantle move?

Earth's gravitational pull
Earth's rotation
Due to convection currents
It is unknown

Correct Answer

A. Due to convection currents

Explanation

The mantle moves due to convection currents. Convection currents are caused by the heat generated from the core of the Earth. The heat causes the molten rock in the mantle to rise, creating an upward flow. As the molten rock cools, it sinks back down, creating a downward flow. This continuous cycle of rising and sinking creates movement in the mantle, which in turn causes the tectonic plates on the Earth's surface to move.

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6.

Oceanic crust is made up of granite.

True
False

Correct Answer

A. False

Explanation

Oceanic crust is not made up of granite. It is primarily composed of basalt, a type of volcanic rock that is denser and darker in color compared to granite. Granite, on the other hand, is a type of igneous rock that forms on the continental crust. The composition of oceanic crust is different from that of continental crust, and this difference in composition is one of the factors that contribute to the contrasting characteristics of these two types of crust.

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7.

What is the continental crust made up of?

Basalt
Obsidian
Quartz
Granite

Correct Answer

A. Granite

Explanation

The continental crust is made up of granite. Granite is a type of igneous rock that is composed mainly of quartz, feldspar, and mica. It is a common rock found in the Earth's continental crust and is known for its durability and strength. Granite is often used as a building material and can be found in many architectural structures and monuments.

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8.

Which layer of the Earth is the hottest?

Crust
Mantle
Outer Core
Inner Core

Correct Answer

A. Inner Core

Explanation

The inner core of the Earth is the hottest layer. This is because it is composed mainly of solid iron and nickel under immense pressure. The intense pressure causes the atoms in the inner core to vibrate rapidly, generating a significant amount of heat. Additionally, the inner core is at the center of the Earth, where it is insulated by the surrounding layers, further contributing to its high temperature.

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9.

What is the most well-known Transform Boundary?

Queen Charlotte Fault
San Andreas Fault
Montagua Fault
Owen Fracture Zone

Correct Answer

A. San Andreas Fault

Explanation

The San Andreas Fault is the most well-known transform boundary. It is a major geological fault in California, USA, and is known for its frequent and powerful earthquakes. The fault separates the Pacific Plate and the North American Plate, causing them to slide horizontally past each other. The San Andreas Fault gained significant attention due to its proximity to densely populated areas such as Los Angeles and San Francisco. Its notoriety is further enhanced by its role in popular culture, as it is often featured in movies and media as a symbol of seismic activity in California.

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10.

What boundary were the Himalayan Mountains formed?

Convergent
Divergent
Transform

Correct Answer

A. Convergent

Explanation

The Himalayan Mountains were formed at a convergent boundary. Convergent boundaries occur when two tectonic plates collide. In the case of the Himalayas, the Indian Plate is colliding with the Eurasian Plate. This collision has resulted in the uplift of the mountains and the formation of the highest peaks in the world. The convergence of these two plates has also led to the creation of other geological features in the region, such as earthquakes and the formation of the Tibetan Plateau.

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11.

What can happen at a Transform Boundary?

Mountains
Earthquakes
Rift Valleys
Trenches

Correct Answer

A. Earthquakes

Explanation

At a transform boundary, two tectonic plates slide past each other horizontally. This movement can cause intense friction and pressure between the plates, leading to the release of energy in the form of earthquakes. Therefore, it is correct to say that earthquakes can happen at a transform boundary.

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12.

When something is denser it will:

Rise
Sink

Correct Answer

A. Sink

Explanation

When something is denser, it means it has a higher mass per unit volume. This increased mass causes it to sink in a fluid or a medium that is less dense than itself. This is because the force of gravity acting on the denser object is greater than the buoyant force exerted by the fluid, resulting in the object sinking rather than rising.

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13.

How are earthquakes measure?

By using math to calculate the length of the earthquake
By feeling and earthquake
Ruler
The Richter Scale

Correct Answer

A. The Richter Scale

Explanation

The Richter Scale is used to measure earthquakes. It is a logarithmic scale that quantifies the energy released by an earthquake. It measures the amplitude of seismic waves recorded by seismographs. The higher the Richter magnitude, the larger the earthquake. This scale allows scientists to compare the size and intensity of earthquakes accurately.

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14.

What are the Earth's Layers from outermost to innermost?

Inner Core, Outer Core, Mantle, and then Crust
Mantle, Crust, Outer Core, and then Inner Core
Crust, Mantle, Outer Core, and then Inner Core
Outer Core, Mantle, Crust, and then Inner Core

Correct Answer

A. Crust, Mantle, Outer Core, and then Inner Core

Explanation

The correct answer is Crust, Mantle, Outer Core, and then Inner Core. This is the correct order of the Earth's layers from outermost to innermost. The crust is the outermost layer, followed by the mantle, which is a thick layer of hot, solid rock. The outer core is a layer of liquid metal that surrounds the inner core, which is the Earth's solid, innermost layer.

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The Earth Layers Quiz: Test!

What is the innermost layer of our Earth?

Quiz Preview

What layers do the Lithosphere consist of?

Which of the cores in our Earth is LIQUID?

Oceanic crust is MORE DENSE than Continental crust

Why does the mantle move?

Oceanic crust is made up of granite.

What is the continental crust made up of?

Which layer of the Earth is the hottest?

What is the most well-known Transform Boundary?

What boundary were the Himalayan Mountains formed?

What can happen at a Transform Boundary?

When something is denser it will:

How are earthquakes measure?

What are the Earth's Layers from outermost to innermost?