Stars and the Solar System Important Questions and Answers

Stars and the Solar System Important Questions and Answers

For students who want to score good marks in class 8 Science subject exams,important questions and answers on Stars and Solar Systemare given here for their preparation. With the information of these important questions and answers, you can prepare well for class 8 exams. Questions and answers related to Stars and Solar System are taught to us under Science. For those who are looking for information related to the chapter on Stars and Solar System, important questions and their answers related to Stars and Solar System are given in this post, which have been asked in the exam earlier also.

Question 1: Name the star closest to Earth other than the Sun.
Answer: Alpha Centauri.

Question 2: How long does light take to reach Earth from Alpha Centauri?
Answer: 4.3 years.

Question 3: Which constellation looks like a long-tailed kite?
Answer: Ursa Major constellation.

Question 4: Which constellation looks like a cluster of bright stones in the sky?
Answer: Pleiades.

Question 5: Define a light year.
Answer: Light year is the distance that light travels in one year.

Question 6: How far is the Sun from Earth?
Answer: The Sun is 1.5 x 108 kilometers away from Earth.

Question 7: Which planet is known as the red planet?
Answer: Mars.

Question 8: Which planet rotates from west to east on its axis?
Answer: Uranus.

Question 9: What force keeps planets orbiting around the Sun?
Answer: Gravitational force keeps planets orbiting around the Sun.

Question 10: What are asteroids?
Answer: Asteroids are small bodies found between the orbits of Jupiter and Mars that orbit the Sun.

Question 11: What are meteorites?
Answer: Meteorites are meteors that are large enough to not completely vaporize in the atmosphere and reach the Earth’s surface.

Question 12: What are the phases of the moon?
Answer: The moon changes its shape from a small crescent (new moon) to a full circle (full moon) and back to a crescent. These changing shapes are called the phases of the moon.

Question 13: What is an artificial satellite?
Answer: An artificial satellite is a man-made object capable of orbiting the Earth.

Question 14: Name two uses of artificial satellites.
Answer: Artificial satellites are used for remote sensing, research, and communication.

Question 15: Which planet has the most natural satellites?
Answer: Jupiter.

Question 16: Why is the North Star (Polaris) stationary?
Answer: Because the North Star is located in line with the Earth’s axis.

Question 17: What is the natural satellite of Earth?
Answer: The Moon.

Question 18: Why is the surface of the moon not used for communication?
Answer: There is no atmosphere on the moon.

Question 19: Which is the largest planet in the solar system?
Answer: Jupiter.

Question 20: Which planet is closest to Earth?
Answer: Mars.

Question 21: When was Halley’s Comet last seen?
Answer: In 1986.

Question 22: Name the nearest and farthest planets from the Sun.
Answer: The nearest planet is Mercury, and the farthest planet is Neptune.

Question 23: What are groups of stars that failed to form planets called?
Answer: Asteroids.

Question 24: Between which two planets do asteroids orbit?
Answer: (i) Mars (ii) Jupiter.

Question 25: How is Ursa Major identified?
Answer: Ursa Major is identified by its seven bright stars. It appears like a large dipper or a question mark. The two stars labeled 1 and 2 on the upper end, when connected in a straight line, point to the North Star.

Question 26: Why is life possible on Earth?
Answer: Life is possible on Earth due to the abundance of oxygen and water, suitable temperature, and the presence of ozone layers that protect living beings from harmful solar radiation.

Question 27: Are all stars in a constellation actually close to each other?
Answer: No, the stars in a constellation are not actually close to each other. They appear close because they are in the same direction but are very far from each other. They appear close due to their distance from Earth.

Question 28: Name the planets that can be seen with the naked eye.
Answer: Besides Earth, the five planets that can be seen with the naked eye are Mercury, Mars, Venus, Jupiter, and Saturn.

Question 29: What is the solar family? Which planets are located between the Sun and Earth?
Answer: The solar family consists of the Sun and its family members, such as planets, moons, asteroids, comets, etc. The Sun is at the center of the solar system, and all members orbit around it in circular paths called orbits. Mercury and Venus are located between the Sun and Earth.

Question 30: What is the North Star, and why is it important?
Answer: The North Star, also known as Polaris, appears stationary because it is aligned with the Earth’s axis. It is situated above the North Pole. Mariners use it to navigate.

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