1. What sets Earth apart in the Solar System?
(a). Spherical shape
(b). Unique features
(c). Climate change
(d). Presence of the moon
2. What is the inclination of the Earth’s axis with its orbital plane?
(a). 45%
(b). 66%
(c). 90%
(d). 23.5%
3. What determines day and night on the earth’s surface?
(a). Equator
(b). Meridian
(c). Circle of light
(d). Horizon
4. How much time does the Earth take to complete one revolution on its axis?
(a). 24 hours
(b). 23 hours, 56 minutes and 4 seconds
(c). 365 days
(d). 12 hours
5. Which force is responsible for deflecting ocean currents and air masses due to Earth’s rotation?
(a). Gravitational force
(b). Magnetic force
(c). Coriolis force
(d). Centrifugal force
6. How does the Earth’s axial tilt contribute to the different lengths of day and night?
(a). By affecting the rotational speed
(b). By affecting the magnetic field
(c). By changing the class
(d). By changing the angle of sunlight
7. In how many days does the Earth complete one revolution around the Sun?
(a). 365.25 days
(b). 30 days
(c). 365 days
(d). 400 days
8. What is the significance of a leap day added every four years?
(a). To synchronize calendars
(b). To celebrate an extra day
(c). To mark an astronomical event
(d). To adjust the Earth’s rotation speed
9. Which event marks the arrival of summer in the Northern Hemisphere?
(a). Winter solstice
(b). Equinox
(c). Summer solstice
(d). Aphelion
10. What happens during the equinox?
(a). Longest day
(b). Equal day and night globally
(c). Shortest day
(d). Double sunrise
11. Which astronomical event occurs when the Moon’s trajectory passes between the Sun and the Earth?
(a). Solar eclipse
(b). Lunar eclipse
(c). Equinox
(d). Solstice
12. What is the Moon covered with during a lunar eclipse?
(a). Earth’s shadow
(b). Sunlight
(c). Clouds
(d). Asteroid
13. What defines a supermoon?
(a). Second full moon in a month
(b). The circumference of the Moon appears larger and brighter.
(c). A series of four lunar eclipses
(d). The Moon is aligned with the equator.
14. When does direct sunlight fall on the Tropic of Cancer?
(a). Summer solstice
(b). Winter solstice
(c). Equinox
(d). Aphelion
15. How is the Tropic of Capricorn illuminated during the winter solstice?
(a). Direct sunlight
(b). Reflected moonlight
(c). Indirect sunlight
(d). Polar lights
16. What causes the rhythmic rise and fall of tides on Earth?
(a). The Moon’s gravitational pull
(b). Earth’s magnetic field
(c). Solar flares
(d). Change in atmospheric pressure
17. At what point in the Earth’s orbit does perihelion occur?
(a). Around January 3
(b). Around June 21st
(c). Around 22 December
(d). Around 23rd September
18. How does the Earth’s rotation affect the day-night cycle?
(a). By changing class
(b). By changing the axial tilt
(c). By creating sea currents
(d). Due to sunrise and sunset
19. What is the result of Earth’s 66% axial tilt?
(a). Equal length of day and night
(b). Different lengths of day and night
(c). Increase in rotation speed
(d). Decrease in the force of gravity.
20. During which equinox does the Northern Hemisphere experience spring?
(a). Spring equinox
(b). Summer equinox
(c). Autumnal equinox
(d). Winter equinox
21. What is the main reason for the different lengths of day and night?
(a). Earth’s revolution
(b). Earth’s axial tilt
(c). Earth’s magnetic field
(d). Earth’s rotation speed
22. How often does a blue moon occur?
(a). Every month
(b). Every six months
(c). Once a year
(d). Rarely, once in a few years
23. What is the main reason for different seasons on Earth?
(a). Earth’s magnetic field
(b). Earth’s rotation speed
(c). Earth’s axial tilt
(d). Earth’s elliptical orbit
24. What is the difference between a blood moon and a lunar eclipse?
(a). Blue color
(b). Red color
(c). Green color
(d). Yellow color
25. What is the purpose of adding an extra day in a leap year?
(a). To synchronize the Earth’s rotation
(b). To celebrate some astronomical event
(c). To align with the lunar cycle
(d). To accommodate solar flares