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Test: The Earth in Space-2 - Class 6 MCQ


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15 Questions MCQ Test - Test: The Earth in Space-2

Test: The Earth in Space-2 for Class 6 2024 is part of Class 6 preparation. The Test: The Earth in Space-2 questions and answers have been prepared according to the Class 6 exam syllabus.The Test: The Earth in Space-2 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: The Earth in Space-2 below.
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Test: The Earth in Space-2 - Question 1
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What fundamental force governs the motion of celestial objects like planets in the Solar System?

Detailed Solution for Test: The Earth in Space-2 - Question 1
The motion of celestial objects like planets in the Solar System is primarily governed by the force of gravity. Gravity is a fundamental force of nature that attracts objects with mass towards each other. In the context of the Solar System, gravity is responsible for keeping planets in their orbits around the Sun and for shaping the dynamics of celestial bodies. Sir Isaac Newton's law of universal gravitation explains how every mass attracts every other mass in the universe with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
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What characteristic defines the orbits of planets around the Sun in the Solar System?

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The orbits of planets around the Sun in the Solar System are best described as elliptical, not perfectly circular. This means that the shape of these orbits is elongated, resembling a slightly flattened circle. The concept of elliptical orbits was first introduced by Johannes Kepler in the early 17th century, as part of his laws of planetary motion. This understanding of elliptical orbits helped revolutionize our comprehension of celestial mechanics and laid the foundation for modern astronomy.
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Test: The Earth in Space-2 - Question 3
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What type of celestial objects, besides planets, can be found in the Solar System?

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Apart from planets, the Solar System also contains other celestial objects such as dwarf planets like Pluto, asteroids, and comets. Dwarf planets are similar to planets but have not cleared their orbits of other debris. Asteroids are rocky objects that orbit the Sun, often found in the asteroid belt between Mars and Jupiter. Comets are icy bodies that release gas and dust, developing a glowing coma and tail when they approach the Sun.
Test: The Earth in Space-2 - Question 4
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Who invented the telescope in 1610, leading to significant astronomical discoveries such as the observation of Jupiter's moons?
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The telescope was invented by Galileo Galilei in 1610. This invention revolutionized astronomy by allowing for detailed observations of celestial objects. Through his observations, Galileo discovered moons orbiting Jupiter, supporting the heliocentric model proposed by Copernicus. This marked a significant advancement in our understanding of the cosmos.
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Which scientist formulated the law of gravitation, explaining the forces behind the motion of planets in the Solar System?
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The scientist who formulated the law of gravitation, explaining the forces behind planetary motion, was Isaac Newton. Newton's law of universal gravitation provided a mathematical description of how objects with mass attract each other, elucidating the mechanisms that govern celestial motion in the Solar System and beyond.
Test: The Earth in Space-2 - Question 6
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What significant concept did ancient civilizations like the Babylonians contribute to the study of astronomy?
Detailed Solution for Test: The Earth in Space-2 - Question 6
Ancient civilizations like the Babylonians made significant contributions to the study of astronomy through their early documentation of celestial observations. Their records and observations laid the foundation for later advancements in astronomy, providing valuable insights into the movements of celestial bodies and shaping our understanding of the cosmos.
Test: The Earth in Space-2 - Question 7
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What is the primary difference between the inner planets and the outer planets in our solar system?
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A key distinction between the inner planets, such as Earth, and the outer planets lies in their composition. The inner planets are predominantly rocky in nature, characterized by solid surfaces, while the outer planets are classified as gas giants with compositions primarily consisting of gases like hydrogen and helium. Understanding these differences provides insights into the diverse structures and properties of planets within our solar system.
Test: The Earth in Space-2 - Question 8
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What key role do meteorites play in scientific research related to the early Solar System?
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Meteorites are crucial in helping scientists understand the early Solar System's conditions. By studying meteorites, researchers can gain valuable insights into the composition and history of our solar system, including the processes that were at play during its formation. This knowledge is essential for piecing together the puzzle of how our solar system evolved over time.
Test: The Earth in Space-2 - Question 9
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How frequently does a high tide typically occur at a beach?
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A high tide occurs roughly every 12 hours at a beach. This regular cycle is a result of the gravitational forces exerted by the Moon on Earth's oceans. As the Moon orbits the Earth, its gravitational pull causes the water levels to rise, resulting in high tides occurring approximately every 12 hours.
Test: The Earth in Space-2 - Question 10
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How does the Moon's gravity impact the Earth's oceans, leading to the formation of tidal bulges?
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The Moon's gravitational pull causes the ocean water to "stretch" towards it, forming tidal bulges. This effect is a result of the gravitational attraction between the Moon and the Earth's oceans, leading to the phenomenon of tides.
Test: The Earth in Space-2 - Question 11
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When do spring tides occur, and what distinguishes them from neap tides?
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Spring tides happen when the gravitational forces of the Sun and Moon align, leading to higher high tides. Neap tides occur when these forces are perpendicular, resulting in lower high tides. This alignment affects the intensity of tidal bulges and subsequently the tide heights.
Test: The Earth in Space-2 - Question 12
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During which type of eclipse is the phenomenon known as the "ring of fire" visible?
Detailed Solution for Test: The Earth in Space-2 - Question 12
During an Annular Eclipse, the Moon covers the Sun's center, leaving a bright ring known as the "ring of fire." This phenomenon occurs when the Moon is farther away from Earth, appearing smaller and not completely covering the Sun during the eclipse.
Test: The Earth in Space-2 - Question 13
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What causes the Moon to appear red or orange during a total lunar eclipse?
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The Moon appears red or orange during a total lunar eclipse due to Earth's atmosphere refracting and filtering sunlight. This process allows some sunlight to reach the Moon, but the shorter blue wavelengths are scattered, leaving the longer red wavelengths to illuminate the lunar surface.
Test: The Earth in Space-2 - Question 14
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Which type of lunar eclipse results in a subtle shading on the Moon rather than a full eclipse?
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A Penumbral Lunar Eclipse occurs when the Moon passes through Earth's penumbra, resulting in a subtle shading rather than a full eclipse. This type of eclipse is characterized by a more diffuse shadow, leading to a less distinct darkening of the Moon compared to total or partial lunar eclipses.
Test: The Earth in Space-2 - Question 15
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What phenomena are observed just before or after totality during a solar eclipse?
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The phenomena observed just before or after totality during a solar eclipse are the Diamond Ring Effect and Baily's Beads. The Diamond Ring Effect is a bright spot of light seen just before or after totality, while Baily's Beads are caused by sunlight shining through the valleys on the Moon's surface at the edge of totality.
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