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Test: Solar System and Our Earth - 1 - Class 3 MCQ


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10 Questions MCQ Test - Test: Solar System and Our Earth - 1

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Test: Solar System and Our Earth - 1 - Question 1

Which planet is often called the Water Planet or the Blue Planet?

Detailed Solution for Test: Solar System and Our Earth - 1 - Question 1
Earth is referred to as the Water Planet or the Blue Planet due to its abundant water resources, with about 71% of its surface covered by water. This distinguishes Earth from other planets in the solar system and is a key factor in supporting life.
Test: Solar System and Our Earth - 1 - Question 2

The sun is primarily made up of _____ and _____.

Detailed Solution for Test: Solar System and Our Earth - 1 - Question 2
The Sun is primarily composed of hydrogen and helium, the two lightest elements in the universe. Hydrogen makes up about 75% of the Sun's mass, while helium accounts for about 24%. The remaining 1% consists of other elements. The Sun fuses hydrogen into helium in its core, releasing energy that powers the Sun and provides light and heat to our solar system.
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Test: Solar System and Our Earth - 1 - Question 3

Identify the planet in the image below that has rings.

Detailed Solution for Test: Solar System and Our Earth - 1 - Question 3
While the question references an image we cannot see here, Saturn is famously known for its extensive ring system, which is the most prominent and complex of any planet in our solar system. These rings are made up of countless small particles, ranging in size from micrometers to meters, that orbit around Saturn.
Test: Solar System and Our Earth - 1 - Question 4
Which planet is known as the Red Planet?
Detailed Solution for Test: Solar System and Our Earth - 1 - Question 4
Mars is known as the Red Planet due to the iron oxide, or rust, on its surface, which gives it a reddish appearance. This distinct color is visible even from Earth, making Mars easily identifiable in the night sky.
Test: Solar System and Our Earth - 1 - Question 5
What is the name of the rotating storm system inside Jupiter?
Detailed Solution for Test: Solar System and Our Earth - 1 - Question 5
The Great Red Spot is a massive storm on Jupiter, known for its distinctive reddish hue and oval shape. It has been raging for at least 400 years, observed since the 17th century, and is large enough to contain two or three Earths, making it the solar system's most famous storm.
Test: Solar System and Our Earth - 1 - Question 6
What is the only satellite of Earth?
Detailed Solution for Test: Solar System and Our Earth - 1 - Question 6
The Moon is Earth's only natural satellite. It orbits our planet and is the fifth largest moon in the solar system. The Moon's gravitational influence is the main driver of Earth's tides and has a significant impact on its rotation and geological activity.
Test: Solar System and Our Earth - 1 - Question 7
What is the classification of Saturn in terms of its planetary type?
Detailed Solution for Test: Solar System and Our Earth - 1 - Question 7
Saturn is classified as a gas giant planet. Gas giants are characterized by their large size and gaseous composition, primarily of hydrogen and helium, with Saturn being the second largest planet in our solar system after Jupiter.
Test: Solar System and Our Earth - 1 - Question 8
What is the primary composition of Saturn's rings?
Detailed Solution for Test: Solar System and Our Earth - 1 - Question 8
Saturn's rings are primarily made up of pieces of ice and rock. These particles range in size from tiny dust grains to objects as large as mountains. The ice can be pure or mixed with dust, which reflects sunlight, making the rings visible from Earth.
Test: Solar System and Our Earth - 1 - Question 9
Comets are celestial bodies that display a visible coma and sometimes a tail when they are close enough to the sun. What is the primary reason for this display?
Detailed Solution for Test: Solar System and Our Earth - 1 - Question 9
Comets display a visible coma (a fuzzy, illuminated envelope) and sometimes a tail due to the sublimation of ice into gas caused by solar radiation. This process releases dust and gas, forming a coma and often two tails pointing away from the Sun: one made of gas (ion tail) and the other of dust.
Test: Solar System and Our Earth - 1 - Question 10
What is the name of the galaxy in which our solar system is located?
Detailed Solution for Test: Solar System and Our Earth - 1 - Question 10
Our solar system is located in the Milky Way galaxy, a barred spiral galaxy that contains hundreds of billions of stars. The Milky Way is part of the Local Group of galaxies and is one of billions of galaxies in the observable universe.
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