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Test: The Interior of the Earth - Class 7 MCQ


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30 Questions MCQ Test Window on the Word Class 7: Solutions, Notes & Worksheets - Test: The Interior of the Earth

Test: The Interior of the Earth for Class 7 2024 is part of Window on the Word Class 7: Solutions, Notes & Worksheets preparation. The Test: The Interior of the Earth questions and answers have been prepared according to the Class 7 exam syllabus.The Test: The Interior of the Earth MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: The Interior of the Earth below.
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Test: The Interior of the Earth - Question 1

What is the outermost layer of the Earth's surface called?

Detailed Solution for Test: The Interior of the Earth - Question 1

The outermost layer of the Earth is called the crust. It's like the Earth's skin! Just like how we have skin to protect our bodies, the crust protects the Earth. The crust is where we live, and it's where all the land and oceans are.

Test: The Interior of the Earth - Question 2

The crust is the ____ layer of the Earth.

Detailed Solution for Test: The Interior of the Earth - Question 2

The crust is the outermost layer of the Earth, which means it is the layer on the outside or surface of the Earth.

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Test: The Interior of the Earth - Question 3

What is the primary composition of the Earth's core?

Detailed Solution for Test: The Interior of the Earth - Question 3
  • The Earth's core is mainly made up of nickel and iron. These elements are like the core's building blocks, helping to create a strong and solid center for our planet.
  • It's like how bricks are used to build a house, but in this case, nickel and iron are the special materials that make up the core of the Earth.
Test: The Interior of the Earth - Question 4

The mantle lies beneath the Earth's ____ and is approximately 2,900 km thick.

Detailed Solution for Test: The Interior of the Earth - Question 4

The mantle lies beneath the Earth's crust, which is like the Earth's outer skin. It is about 2,900 km thick. So, the correct answer is "Crust," which is the outermost layer of the Earth.

Test: The Interior of the Earth - Question 5

How do igneous rocks form?

Detailed Solution for Test: The Interior of the Earth - Question 5
  • Igneous rocks form by cooling and solidifying magma. Imagine magma as very hot melted rock deep underground. When this magma cools down, it becomes solid and turns into igneous rocks. It's like when you leave hot soup to cool down, and it becomes solid jelly! So, igneous rocks are like the jelly that forms when hot magma cools and hardens.
Test: The Interior of the Earth - Question 6

Igneous rocks are formed when ____ moves upward towards the Earth's crust, cools, and solidifies.

Detailed Solution for Test: The Interior of the Earth - Question 6

Lava moves upward towards the Earth's crust, cools, and solidifies to form igneous rocks. Lava is very hot liquid rock that comes out during volcanic eruptions.

Test: The Interior of the Earth - Question 7

How do sedimentary rocks form?

Detailed Solution for Test: The Interior of the Earth - Question 7
  • Sedimentary rocks form when small pieces of rocks and minerals are compressed and hardened over a long time. This process creates layers in the rocks.
  • Imagine stacking your toys on top of each other and pressing them down to make a big toy tower. That's how sedimentary rocks form, by pressing down layers of sediments to make strong rocks.
Test: The Interior of the Earth - Question 8

Sedimentary rocks are generally more porous and _______ than igneous rocks.

Detailed Solution for Test: The Interior of the Earth - Question 8

Sedimentary rocks are generally more porous and softer than igneous rocks. This means that they are usually easier to break and not as hard as rocks that come from volcanic activity.

Test: The Interior of the Earth - Question 9

What are the two main types of minerals?

Detailed Solution for Test: The Interior of the Earth - Question 9
  • Minerals are divided into two main types: Metallic and Non-Metallic.
  • Metallic minerals are usually found in igneous rocks like iron ore and copper.
  • Non-Metallic minerals, on the other hand, are primarily found in sedimentary rocks like limestone and mica.
  • Remember, metallic minerals are like iron and copper, while non-metallic minerals are like limestone and mica.
Test: The Interior of the Earth - Question 10

Formation of all rocks begins with _____ deep inside the Earth.

  • Water
  • Magma
  • Wind
  • Sunlight
Detailed Solution for Test: The Interior of the Earth - Question 10

Rocks start forming with magma deep inside the Earth. Magma is very hot melted rock that cools down to become different types of rocks.

Test: The Interior of the Earth - Question 11

What is the primary use of rocks in construction?

Detailed Solution for Test: The Interior of the Earth - Question 11

Rocks are used as building blocks in construction to make houses, buildings, and roads. They are strong and help in making structures sturdy. Just like how you use blocks to build a tower, rocks are used to build big things like houses and bridges.

Test: The Interior of the Earth - Question 12

Fossil fuels are the primary source of energy for activities such as _____.

Detailed Solution for Test: The Interior of the Earth - Question 12

Fossil fuels like coal, oil, and gas are used for cooking food, such as boiling water, and heating homes. They help in making delicious meals and keeping us warm.

Test: The Interior of the Earth - Question 13

What is the Earth compared to in terms of its layers?

Detailed Solution for Test: The Interior of the Earth - Question 13

The Earth is like a big round stone with different layers inside it. Just like when you see the layers of an onion when you cut it, the Earth has layers one inside the other. Imagine the Earth as a huge round rock with many layers, like the layers of an onion, but much bigger!

Test: The Interior of the Earth - Question 14

What is the outermost layer of the Earth called?

Detailed Solution for Test: The Interior of the Earth - Question 14
The outermost layer of the Earth is called the crust.
  • Just like the crust of bread, it is the outer layer of the Earth's surface.
  • The crust is where we live and where we find land, like continents and islands.
  • It's like the Earth's skin that covers everything underneath it, including rocks, soil, and oceans.
Test: The Interior of the Earth - Question 15

The crust is the outermost layer of the Earth and forms its _______.

Detailed Solution for Test: The Interior of the Earth - Question 15

The crust is like the Earth's skin. It covers the whole planet. It's the part we walk on and where the land and oceans are. So, the crust forms the Earth's surface.

Test: The Interior of the Earth - Question 16

What is the mantle mainly composed of?

Detailed Solution for Test: The Interior of the Earth - Question 16
  • The mantle is mainly made up of silica and magnesium.
  • Silica is like tiny grains of sand, and magnesium is a shiny metal.
  • Together, they form a part of the Earth's layers that is very important for how our planet works.
  • Imagine the mantle like a warm, gooey layer beneath the Earth's surface that helps create the movements we sometimes feel as earthquakes and volcanoes!
Test: The Interior of the Earth - Question 17

The mantle is thinner and denser than the continental crust and is composed mainly of silica and ______.

Detailed Solution for Test: The Interior of the Earth - Question 17

The mantle is thinner and denser than the continental crust and is composed mainly of silica and magnesium. This makes it different from the continental crust in terms of its composition and density. Magnesium is a special element that makes the mantle unique.

Test: The Interior of the Earth - Question 18

What are the three main groups rocks can be classified into based on their types?

Detailed Solution for Test: The Interior of the Earth - Question 18
  • Rocks are grouped into three main types: Igneous, Sedimentary, and Metamorphic.
  • Igneous rocks form when magma cools and solidifies.
  • Sedimentary rocks are made from compressed sediments.
  • Metamorphic rocks change due to heat and pressure.
  • So, rocks can be put into these three categories based on how they are formed.
Test: The Interior of the Earth - Question 19

Rocks vary in __________, sizes, and textures.

Detailed Solution for Test: The Interior of the Earth - Question 19

Rocks come in different colors, sizes, and textures. This means that rocks can look different from one another. Some rocks can be red, some can be blue, and some can be green. So, rocks vary in colors.

Test: The Interior of the Earth - Question 20

What type of rocks are formed from lava cooling and solidifying on the Earth's surface?

Detailed Solution for Test: The Interior of the Earth - Question 20

When lava cools and hardens on the Earth's surface, it forms extrusive rocks. These rocks are made of very fine grains and sometimes look glassy because the lava cools quickly. So, when you see rocks like this, you can remember they are extrusive rocks!

Test: The Interior of the Earth - Question 21
Extrusive rocks are formed when lava cools and solidifies on the Earth's surface, resulting in very ____ grains due to fast cooling.
Detailed Solution for Test: The Interior of the Earth - Question 21
When lava cools quickly on the Earth's surface, it forms extrusive rocks with very small grains. This happens because the cooling process is fast, making the rocks appear smooth.
Test: The Interior of the Earth - Question 22

What are rocks made of?

Detailed Solution for Test: The Interior of the Earth - Question 22

Rocks are made of different naturally occurring substances called minerals. These minerals have their own special chemical makeup and specific physical traits. Imagine rocks like a big puzzle made up of tiny building blocks called minerals that fit together to form the rock you see.

Test: The Interior of the Earth - Question 23
Rocks consist of various naturally occurring substances known as ________.
Detailed Solution for Test: The Interior of the Earth - Question 23
Minerals are naturally occurring substances found in rocks. They have different colors, shapes, and properties. Minerals are like the building blocks of rocks.
Test: The Interior of the Earth - Question 24

State whether the following statement is True or False:
Rocks consist of various naturally occurring substances known as minerals.

Detailed Solution for Test: The Interior of the Earth - Question 24

Explanation: Rocks are made up of different things called minerals. These minerals have their own special ingredients and looks. So, the statement is True.

Test: The Interior of the Earth - Question 25

What type of rocks are generally found in igneous rocks?

Detailed Solution for Test: The Interior of the Earth - Question 25

Igneous rocks are typically rich in metallic minerals. These minerals include substances like iron ore, copper, and bauxite. Metallic minerals are important for making various useful things like iron for construction and copper for electrical wiring.

Test: The Interior of the Earth - Question 26

Metallic minerals are generally found in ______ rocks.

  • Igneous
  • Sedimentary
  • Metamorphic
  • Volcanic
Detailed Solution for Test: The Interior of the Earth - Question 26

Metallic minerals are usually found in igneous rocks. These rocks are formed when magma cools down and hardens. This process happens deep inside the Earth and leads to the creation of rocks like granite and basalt.

Test: The Interior of the Earth - Question 27

State whether the following statement is True or False:

Metallic minerals are primarily found in sedimentary rocks.

Detailed Solution for Test: The Interior of the Earth - Question 27
  • Explanation: Metallic minerals are generally found in igneous rocks, not in sedimentary rocks. Sedimentary rocks are where non-metallic minerals are primarily found, such as limestone, mica, and kaolinite. So, the statement is False.
  • Additional Fun Fact: Did you know that metallic minerals like iron ore, copper, and bauxite are often found in rocks formed from molten magma deep inside the Earth?
Test: The Interior of the Earth - Question 28

What are rocks primarily used for in construction?

Detailed Solution for Test: The Interior of the Earth - Question 28
  • Rocks are primarily used for building blocks in construction. They help in making strong and sturdy buildings.
  • Just like how you use toy blocks to build a house, real rocks are used to make big buildings and roads too.
  • So, rocks are like the strong blocks that hold up our buildings and structures.
Test: The Interior of the Earth - Question 29
Fossil fuels are the primary source of energy for activities like _______.
Detailed Solution for Test: The Interior of the Earth - Question 29
Fossil fuels are very important for cooking food, driving cars, and making things in factories. They help us do many things in our daily lives!
Test: The Interior of the Earth - Question 30

State whether the following statement is True or False:

Fossil fuels are only used for making toys.

Detailed Solution for Test: The Interior of the Earth - Question 30

Fossil fuels are not used for making toys. They are very important sources of energy that help us do things like cooking food, driving cars, and making electricity. So, the statement is False. Fossil fuels are used for important things, not for making toys.

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