MCQ on Beyond Earth Class 6
Class 6 Science Chapter 12 MCQ Beyond Earth
Multiple Choice Questions :
Question 1.
In Indian astronomy, what term is used to denote certain stars or a group of stars like Ardra or Beletguese?
(a) Nakshatra
(b) Constellation
(c) Zodiac
(d) Asterism
Answer:
(a) Nakshatra
Question 2.
Which of the following is true about the Pole star?
(a) It is visible from both the Northern and and Southern hemisphere
(b) It is a part of the Ursa Major constellation
(c) It appears stationary in the sky
(d) It changes position throughout the year
Answer:
(c) It appears stationary in the sky
Question 3.
Which star is a part of the Canis Major constellation and is the brightest in the night sky?
(a) Betelgeuse
(b) Aldebaran
(c) Sirius
(d) Polaris
Answer:
(c) Sirius
Question 4.
Which planet has the most extensive ring system in our solar system?
(a) Jupiter
(b) Neptune
(c) Dranus
(d) Saturn
Answer:
(d) Saturn
Question 5.
Which planet in our solar system has the highest number of moons?
(a) Earth
(b) Mars
(c) Jupiter
(d) Saturn
Answer:
(c) Jupiter
Question 6.
Which of the following is true about the Milky-way?
(a) It is a planet in the solar system
(b) It is a star
(c) It is the galaxy that contains our solarsystem
(d) It is a black hole
Answer:
(c) It is the galaxy that contains our solarsystem
Question 7.
If the sun suddenly disappeared, what would be the immediate effect on Earth?
(a) Earth would stop revolving
(b) Earth would stop rotating
(c) Earth would continue to revolve for some time.
(d) Earth would move in a straight line
Answer:
(d) Earth would move in a straight line
Question 8.
Which of the following statements is/are incorrect?
(a) Earth can be considered a satellite of the Sun.
(b) Shani is the name given to Saturn in India.
(c) The star nearest to us is Proxima Centauri.
(d) Venus can be viewed near the Eastern direction before sunrise.
Answer:
(c) The star nearest to us is Proxima Centauri.
Question 9.
Which of the following depicts the position of the pole star correctly?
Answer:
Question 10.
Which of the following is not surrounded by atmosphere?
(a) Mercury
(b) Venus
(c) Earth
(d) Moon
Answer:
(d) Moon
Question 11.
What distinguishes asteroids from planets in the solar system?
(a) Their distance from the Sun
(b) Their irregular in shapes
(c) Their number of moons
(d) Their ability to reflect sunlight
Answer:
(b) Their irregular in shapes
Question 12.
Light pollution is growing sharply globally. What is its bad impact?
(a) It affects the aquatic life.
(b) It results in the depletion of ozone layer.
(c) It reduces our ability to enjoy and study objects in the night sky.
(d) It contributes in global warming.
Answer:
(c) It reduces our ability to enjoy and study objects in the night sky.
Question 13.
Which of the following celestial bodies is primary composed of gas, dust and ice and develops a visible tail when close to the sun?
(a) Asteroid
(b) Planet
(c) Comet
(d) Satellite
Answer:
(c) Comet
Question 14.
Why does the Milky-way appear as a milky band of light in the sky?
(a) It is a close star cluster
(b) It contains billions of stars viewed from the side
(c) It reflects sunlight
(d) It is part of a Comet’s path
Answer:
(b) It contains billions of stars viewed from the side
Assertion-Reason Questions :
The questions given below consist of an Assertion and a Reason. Based on that, choose the appropriate option.
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
1. Assertion (A) The hottest planet in the solar system is Mercury.
Reason (R) Mercury is closest to sun.
Answer:
(d) Venus is the hottest planet in the solar system but mercury is closest to the sun.
2. Assertion (A) Pole star is not visible from the Southern hemisphere of Earth.
Reason (R) Not all stars and constellations are visible from all places on the Earth.
Answer:
(a) Not all stars and constellations are visible from all places on Earth and on all nights in a year. e.g. Pole star is not visible from the southern hemisphere of Earth.
3. Assertion (A) Before the invention of the magnetic compass, stars and constellations helped people in finding directions.
Reason (R) Constellations are the groups of stars forming patterns.
Answer:
(b) Both the statements are separately correct.
The questions given below consist of an Assertion and a Reason. Based on that, choose the appropriate option.
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
1. Assertion (A) Asteroids are the visitors from the outer regions of the solar system.
Reason (R) Occasionally, asteroids pass very close to the Earth.
Answer:
(d) Assertion is false but Reason is true.
2. Assertion (A) Our solar system is a part of Milky-way galaxy.
Reason (R) Galaxies together form the universe.
Answer:
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Fill in the Blanks :
1. Neptune is the ________ planet from the Sun.
Answer:
farthest
2. The planet which appears blue in colour is ________.
Answer:
Earth
3. A group of stars that appear to form a pattern in the sky is known as a ________ .
Answer:
Constellation
4. A celestial body that revolves around a planet is known as ________.
Answer:
Satellite
5. Asteroids are found between the orbits of ________ and ________.
Answer:
Mars, Jupiter
6. Night watching can be done in areas where there is less ________ pollution.
Answer:
light
7. In India, Orion is best viewed during the months of ________ to ________ after sunset.
Answer:
December, April
8. For one full rotation, Earth takes about ________ which is called a day.
Answer:
24 h
9. Planets get most of their energy from ________.
Answer:
Sun
10. ________ comet appears every 76 years.
Answer:
Halley’s
11. The farther the planets are, the ________ they are.
Answer:
Colder
12. Pluto is now called a ________ planet.
Answer:
dwarf
13. Stars ________ unlike planets.
Answer:
twinkle
14. The Earth has ________ Moon, while Mars has ________ moons.
Answer:
one, two.
True/False :
1. Pole star is the brightest star in the night sky.
Answer:
False
2. Mercury is the smallest planet of the solar system.
Answer:
True
3.The Big dipper lies in the constellation Ursa Major.
Answer:
True
4. The planets do not emit light of their own.
Answer:
True
5. There are nine planets in the solar system.
Answer:
False
6. Constellation Orion can be seen only with a telescope.
Answer:
False
7. Uranus is the farthest planet in the solar system.
Answer:
False
8. The planet Venus appears in the eastern sky before sunrise.
Answer:
True
9. There are many galaxies in the outer space.
Answer:
True
10. Comets are the messengers of bad luck.
Answer:
False
11. Moon is our nearest neighbour in the space.
Answer:
True
12. Asteroid belt exists between the orbits of Earth and Mars.
Answer:
False
Match the items in column A with the category they belong to in column B.
| Column A | Column B |
| (a) Milky-way | (i) Constellation |
| (b) Earth | (ii) Star |
| (c) Taurus | (iii) Inner planet |
| (d) Sun , | (iv) Outer planet |
| (e) Saturn | (v) Comet |
| (f) Halley’s | (vi) Galaxy |
Answer:
| Column A | Column B |
| (a) Milky-way | (vi) Galaxy |
| (b) Earth | (iii) Inner planet |
| (c) Taurus | (i) Constellation |
| (d) Sun , | (ii) Star |
| (e) Saturn | (iv) Outer planet |
| (f) Halley’s | (v) Comet |
Case Based Questions :
Read the given case study and answer the following questions
Simran is a young aspirant astronaut who loves to learn about space. She has her own telescope and she loves to watch and identify different objects in the night sky. Once she spotted a planet near the Western direction after sunset. It was shining brightly in the sky and considered to be the hottest planet in the solar system.
Question 1.
Which planet did Simran spot in the sky?
(a) Mercury
(c) Earth
(b) Venus
(d) Mars
Answer:
(b) Venus
Question 2.
Why is this planet hottest in the solar system?
(a) It has a thick atmosphere to absorb and radiate heat.
(b) It is closest to the sun.
(c) It is made up of hot gases.
(d) Both (a) and (c)
Answer:
(a) It has a thick atmosphere to absorb and radiate heat.
Question 3.
Why is this planet called Earth’s twin?
Answer:
Venus is sometimes called Earth’s twin because these two have almost same size and mass. Their composition is also very similar.