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Olympiad Test Level 1: Earth and Its Environment- 1


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10 Questions MCQ Test GK Olympiad for Class 3 | Olympiad Test Level 1: Earth and Its Environment- 1

Olympiad Test Level 1: Earth and Its Environment- 1 for Class 3 2022 is part of GK Olympiad for Class 3 preparation. The Olympiad Test Level 1: Earth and Its Environment- 1 questions and answers have been prepared according to the Class 3 exam syllabus.The Olympiad Test Level 1: Earth and Its Environment- 1 MCQs are made for Class 3 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test Level 1: Earth and Its Environment- 1 below.
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Olympiad Test Level 1: Earth and Its Environment- 1 - Question 1

Layer which saves us from harmful effects of UV radiation is called

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 1

The ozone layer is being washed out by use of harmful chemicals like aerosols.

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 2

The Earth belongs to which of these categories?

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 2

Planets are the celestial bodies that revolve around a star like Sun.

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 3

What does the figure show?

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 3

The layers are crust, mantle, inner core and outer core.

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 4

The thickness of the crust is around ___ km in the ocean floor.

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 4

It is around 5 km at the crust in the ocean floor. And continental crust is about 35-40 km thick.

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 5

The crust is mainly made up of rocks containing

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 5

This is why, it is also called SIAL (SI from Silica and AL from Alumina).

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 6

The mantle is around ________ km deep.

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 6

The mantle is around 3000 km or 1800 miles deep.

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 7

In which state of matter are the metals present in outer core of Earth?

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 7

Due to high temperature, the metals are present in molten or liquid state.

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 8

Which is the hottest part of the earth?

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 8

As we move down the Earth’s surface, the temperature rises.

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 9

Which of these is a characteristic feature of Earth?

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 9

Saturn has rings around it, Mars is the Red Planet and outer planets have more than one natural satellite, but Earth is the only planet with life.

Olympiad Test Level 1: Earth and Its Environment- 1 - Question 10

What is the percentage of water on earth’s surface?

Detailed Solution for Olympiad Test Level 1: Earth and Its Environment- 1 - Question 10

More than two-thirds of the earth’s surface is covered with water.

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