Earth Structure Quiz: Explore The Layers Of Our Planet

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Quizzes Created: 2 | Total Attempts: 40,787
| Attempts: 664 | Questions: 10 | Updated: Oct 28, 2025
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1. The layers of the Earth are:

Explanation

The crust is the top layer, then the mantle, followed by the outer and inner core.

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About This Quiz
Earth Structure Quiz: Explore The Layers Of Our Planet - Quiz

Test your knowledge with the earth structure quiz! This quiz dives into the Earth's layers, from the crust to the core, helping you understand the composition and characteristics of each layer. Whether you're a student or geology enthusiast, this quiz is an engaging way to learn more about the Earth’s... see moreinternal structure.

If you want to expand your knowledge, take the earth composition quiz. This quiz focuses on the materials that make up the Earth, including the types of rocks, minerals, and elements that form the planet. Perfect for students and science enthusiasts, it offers a comprehensive review of Earth's composition and the processes that shape it. see less

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2. The Outer core is the thickest layer of the Earth

Explanation

The mantle is the thickest layer.

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3. The Earth's core is composed mainly of iron and nickel.

Explanation

The Earth's core is divided into two parts: the inner core and the outer core. The inner core is solid and composed mostly of iron with a temperature of around 5,200° Celsius (9,392° Fahrenheit). The outer core is liquid and composed of a nickel-iron alloy. The Earth's core plays a crucial role in generating the planet's magnetic field, which protects us from harmful solar radiation.

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4. Melted rocks from the mantle are called

Explanation

High temperatures (2800-3200 degrees Celsius) in the upper part of the mantle melt rocks, forming magma that flows like hot thick oatmeal.

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5. The distance from the North and south pole is smaller than from a point on the equator to an opposite point halfway around the equator.

Explanation

The Earth is not a perfect sphere; it's an oblate spheroid. This means the diameter at the equator is slightly larger than the diameter from pole to pole. As a result, the distance from the equator to the opposite point halfway around the Earth is longer than the distance from one pole to the other. This is due to the Earth's bulge at the equator caused by its rotation.

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6. Other elements that are in the Earth's crust are:

Explanation

The crust also holds small amounts of Aluminum, Iron, Calcium, Magnesium, Sodium, and other elements.

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7. The Earth is a little flattened at the ________ and bulges a bit at __________.

Explanation

The Earth's shape is not perfectly spherical.

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8. The Earth's crust is mostly made of

Explanation

Most rocks that make up the Earth's crust are mad up primarily of the elements silicon(27%) and oxygen(45%).

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9. What is the primary source of the Earth's internal heat?

Explanation

The primary source of the Earth's internal heat comes from the radioactive decay of elements in the core, particularly uranium and thorium. This heat drives geological processes such as volcanic activity and plate tectonics.

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10. Which of the following is true about the Earth's mantle?

Explanation

The mantle is the thickest layer of the Earth and is composed mostly of solid rock, rich in oxygen and silicon.

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The layers of the Earth are:
The Outer core is the thickest layer of the Earth
The Earth's core is composed mainly of iron and nickel.
Melted rocks from the mantle are called
The distance from the North and south pole is smaller than from a...
Other elements that are in the Earth's crust are:
The Earth is a little flattened at the ________ and bulges a bit at...
The Earth's crust is mostly made of
What is the primary source of the Earth's internal heat?
Which of the following is true about the Earth's mantle?
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