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Earth Science & Astronomy
Practice questions 1-25
1. What is the Earth’s only natural satellite? – Moon
2. Which is the largest planet in our solar system? – Jupiter
3. What causes tides in the ocean? – Gravitational pull of Moon and Sun
4. The Earth revolves around the Sun in how many days? – 365 days (approx.)
5. Which is the hottest planet in the solar system? – Venus
6. Which planet is known as the "Red Planet"? – Mars
7. What is the closest star to Earth? – Sun
8. What is the shape of Earth? – Oblate Spheroid
9. What is the layer of gases surrounding Earth called? – Atmosphere
10. Which gas is most abundant in Earth’s atmosphere? – Nitrogen (~78%)
11. What is the Earth’s innermost layer called? – Inner Core
12. The instrument used to measure earthquakes is called? – Seismograph
13. Which is the longest river in the world? – Nile River
14. Which is the largest ocean on Earth? – Pacific Ocean
15. Which is the highest mountain peak on Earth? – Mount Everest
16. What is the Earth’s axis tilt angle? – 23.5°
17. Which is the fastest rotating planet in the solar system? – Jupiter
18. What is the time taken by Earth to complete one rotation? – 24 hours
19. Which planet has the largest number of moons? – Saturn
20. What is the study of earthquakes called? – Seismology
21. Which galaxy contains our solar system? – Milky Way
22. Which planet is known as the "Blue Planet"? – Earth
23. What is the Earth’s average distance from the Sun? – 150 million km
24. Which is the smallest planet in the solar system? – Mercury
25. What protects the Earth from harmful UV rays of the Sun? – Ozone Layer
Practice questions 26-35
26. Which is the second largest planet in the solar system? – Saturn
27. Which is the closest planet to the Sun? – Mercury
28. Which is the brightest planet in the night sky? – Venus
29. Which planet has rings around it? – Saturn
30. Which is the coldest planet in the solar system? – Neptune
31. Which is the third planet from the Sun? – Earth
32. Which is the densest planet in the solar system? – Earth
33. Which is the smallest continent on Earth? – Australia
34. Which is the largest desert in the world? – Sahara Desert
35. Which is the deepest ocean trench
on Earth? – Mariana Trench
Practice questions 36-45
36. Which planet is farthest from the Sun? – Neptune
37. Which is the fourth planet from the Sun? – Mars
38. Which is the largest satellite in the solar system? – Ganymede (of Jupiter)
39. Which layer of the atmosphere contains the ozone layer? – Stratosphere
40. Which planet has the longest day? – Venus
41. Which planet is called the “Earth’s twin”? – Venus
42. Which is the largest volcano on Mars? – Olympus Mons
43. Which is the largest island in the world? – Greenland
44. Which is the deepest lake in the world? – Lake Baikal
45. Which is the fastest bird in the
world? – Peregrine Falcon
Practice questions 46-55
46. Which is the largest continent on Earth? – Asia
47. Which is the largest country in the world by area? – Russia
48. Which is the smallest ocean in the world? – Arctic Ocean
49. Which is the longest mountain range in the world? – Andes
50. Which is the largest hot desert in the world? – Sahara Desert
51. Which is the largest freshwater lake in the world? – Lake Superior
52. Which planet has the slowest rotation? – Venus
53. Which planet has the fastest revolution around the Sun? – Mercury
54. Which layer of the Earth lies just below the crust? – Mantle
55. Which is the brightest star
in the night sky? – Sirius
Practice questions 56-65
56. Which is the smallest planet in the Solar System? – Mercury
57. Which is the largest planet in the Solar System? – Jupiter
58. Which is the hottest planet in the Solar System? – Venus
59. Which is the coldest planet in the Solar System? – Neptune
60. Which galaxy does Earth belong to? – Milky Way
61. Which planet is known as the Earth’s twin? – Venus
62. Which is the second largest planet in the Solar System? – Saturn
63. Which planet has the longest day? – Venus
64. Which is the only natural satellite of Earth? – Moon
65. Which planet is known as
the “Red Planet”? – Mars
Important questions and their answers related to natural science.
Earth Science & Astronomy
Chemistry
Physics
Biology...
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