🌍 Class 7 – Earth, Moon & Sun MCQ Quiz
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🧠 Multiple Choice Questions (25)
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1. How do day and night occur on the Earth?
Result:
💬 Answer:
The correct answer is (C). Day and night occur because the Earth
rotates from west to east on its axis.
📚 Explanation:
The side of the Earth facing the Sun has day, and the side turned away has
night. As Earth spins, every place passes through light and darkness once every 24 hours.
✨ Did you know?
One full rotation of Earth takes about 24 hours, which is why one day has 24 hours. ⏰
2. Why do stars appear to move from east to west in the night sky?
Result:
💬 Answer:
The correct answer is (B). Stars appear to move from east to west because Earth rotates
from west to east.
📚 Explanation:
Our rotating Earth makes the distant stars seem to drift across the sky in the opposite direction of our
spin, even though they are almost fixed relative to us.
✨ Did you know?
This effect is called apparent motion. The stars are not really revolving around Earth. 🌌
3. Why does the Pole Star appear almost fixed in the sky?
Result:
💬 Answer:
The correct answer is (B). The Pole Star appears almost fixed because it lies nearly along
the axis of rotation of the Earth.
📚 Explanation:
As Earth spins, most stars seem to move, but the Pole Star is located nearly above the North Pole, so its
position in our sky hardly changes.
✨ Did you know?
The Pole Star is called Dhruva Tara in Hindi and helps travellers find
north. 🧭
4. Why do different constellations appear in the night sky in different months?
Result:
💬 Answer:
The correct answer is (A). Different constellations are seen because the Earth
revolves around the Sun.
📚 Explanation:
As Earth moves along its orbit, we look towards different parts of space at night, so new groups of stars
become visible in different months.
✨ Did you know?
Orion is a famous winter constellation, best seen around
December and January. ❄️🌌
5. What mainly causes the change of seasons on the Earth?
Result:
💬 Answer:
The correct answer is (A). Seasons occur because of the Earth’s
tilted axis and its revolution around the Sun.
📚 Explanation:
Due to the tilt, different parts of Earth receive different amounts of sunlight at different times of the
year, causing summer, winter, and other seasons.
✨ Did you know?
If Earth’s axis were not tilted, there would be almost no seasons and
the climate would remain nearly the same all year. 🌱
6. Why are days longer in summer than in winter in a place like India?
Result:
💬 Answer:
The correct answer is (A). In summer, that part of Earth is
tilted towards the Sun, so the Sun stays above the horizon for more hours.
📚 Explanation:
When the Sun appears to take a longer path across the sky, daytime lasts longer and night becomes shorter,
which is what happens in summer.
✨ Did you know?
Near the poles, the Sun may not set at all for many days in summer. This is called the
Midnight Sun. 🌞
7. Which statement about the Earth’s rotation is correct?
Result:
💬 Answer:
The correct answer is (A). Earth completes one full
rotation in about 24 hours.
📚 Explanation:
This rotation causes the cycle of day and night everywhere on Earth. One complete spin gives us
one day.
✨ Did you know?
The Earth rotates from west to east, so the Sun and stars appear to rise in the east and
set in the west. 🌅
8. Which eclipse occurs when the Earth comes between the Sun and the Moon?
Result:
💬 Answer:
The correct answer is (A). When the Earth comes between the Sun and the
Moon, we see a lunar eclipse.
📚 Explanation:
Earth’s shadow falls on the Moon and covers it partially or fully, which we observe as a lunar eclipse.
✨ Did you know?
A lunar eclipse can be seen from a large part of the Earth, because Earth’s shadow on the
Moon is very big. 🌕
9. Which eclipse occurs when the Moon comes between the Sun and the Earth?
Result:
💬 Answer:
The correct answer is (A). When the Moon comes between the Sun and Earth,
a solar eclipse occurs.
📚 Explanation:
The Moon blocks some or all of the Sun’s light from reaching a part of Earth, so the Sun appears darkened
from that region.
✨ Did you know?
A total solar eclipse is visible only from a small region on Earth
because the Moon’s central shadow is very narrow. 🌑
10. Which is the correct order of Sun, Earth and Moon during a solar eclipse?
Result:
💬 Answer:
The correct answer is (A). For a solar eclipse, the order is
Sun → Moon → Earth.
📚 Explanation:
In a solar eclipse, the Moon comes in front of the Sun and casts its shadow on a small part of Earth’s
surface, blocking sunlight there.
✨ Did you know?
When the Moon does not fully cover the Sun’s disc, we see a partial or
annular solar eclipse. 🌘
11. Why can the Moon, which is much smaller than the Sun, completely block the Sun in a total solar eclipse?
Result:
💬 Answer:
The correct answer is (A). The Moon is much closer to Earth, so it appears
almost the same size as the Sun in the sky and can cover it.
📚 Explanation:
The Sun is very large but very far away, while the Moon is smaller but much closer. Their
apparent sizes in the sky are similar, so the Moon can block the Sun during a total
solar eclipse.
✨ Did you know?
During a total solar eclipse, the Sun’s outer atmosphere, called the corona, becomes
visible as a glowing ring. 🌖
12. The Indian cricket team plays matches in Australia in December. What type of clothes should they carry?
Result:
💬 Answer:
The correct answer is (B). In December, Australia (Southern Hemisphere) has
summer, so light summer clothes are needed.
📚 Explanation:
When it is winter in the Northern Hemisphere (like India), it is summer in the
Southern Hemisphere (like Australia) because of Earth’s tilt.
✨ Did you know?
Countries like Australia and South Africa have their
summer holidays in December–January. ☀️🏏
13. In June, how many hours of sunlight does the North Pole approximately receive in one full rotation of Earth?
Result:
💬 Answer:
The correct answer is (A). In June, the North Pole can get
24 hours of sunlight.
📚 Explanation:
Around June, the North Pole is tilted towards the Sun, so it remains in sunlight for the entire day,
while the South Pole stays in darkness.
✨ Did you know?
Around December, the situation reverses – the South Pole gets 24 hours of sunlight and
the North Pole is in darkness. 🌞🌑
14. Which hemisphere experiences summer when it is June in India (Northern Hemisphere)?
Result:
💬 Answer:
The correct answer is (A). In June, it is summer in the
Northern Hemisphere and winter in the Southern Hemisphere.
📚 Explanation:
At this time, the Northern Hemisphere is tilted towards the Sun, receiving more direct sunlight and
longer days, so it has summer.
✨ Did you know?
The dates of the summer and winter solstice mark the longest and
shortest days of the year in each hemisphere. 📅
15. Padmashree saw the Orion constellation overhead at 8:00 pm yesterday. Roughly when will she see it overhead today?
Result:
💬 Answer:
The correct answer is (A). The same constellation appears about
4 minutes earlier each night, so around 7:56 pm.
📚 Explanation:
Because Earth revolves around the Sun, the stars seem to shift slightly everyday, so they cross the same
position in the sky a few minutes earlier each night.
✨ Did you know?
Over about one month, a constellation can appear roughly 2 hours earlier in the night
sky compared to the first day. ⏱️
16. Nandhini saw a group of stars rising at midnight on 21 June. When will she see the same group rising at midnight again?
Result:
💬 Answer:
The correct answer is (A). She will see the same group rising at midnight again around
21 June next year.
📚 Explanation:
Star patterns in the sky repeat after Earth completes one full revolution around the Sun, that is, after
about one year.
✨ Did you know?
The path that the Sun appears to take across the sky among the stars is called the
ecliptic. 🌞✨
17. It is daytime in India while Abhay’s uncle in the USA is experiencing night. Which statement explains this best?
Result:
💬 Answer:
The correct answer is (A). Earth’s rotation makes different places face
the Sun or face away from it at different times.
📚 Explanation:
When India faces the Sun, it experiences day; at the same time, the USA, on the opposite side, is turned
away from the Sun and experiences night.
✨ Did you know?
Because Earth is a sphere, we use different time zones so local time matches the position
of the Sun in the sky. 🕒
18. Which of the following is a safe way to watch a solar eclipse?
Result:
💬 Answer:
The correct answer is (C). Solar eclipse goggles or safe projection
methods allow us to view the eclipse without harming our eyes.
📚 Explanation:
Looking directly at the Sun, even during an eclipse, can damage the retina and cause permanent loss of
eyesight. Proper filters or projection keep your eyes safe.
✨ Did you know?
Many science centres and planetariums arrange safe viewing programmes on eclipse days. 🔭
19. Which is the correct order of Sun, Earth and Moon during a lunar eclipse?
Result:
💬 Answer:
The correct answer is (B). In a lunar eclipse, the order is
Sun → Earth → Moon.
📚 Explanation:
Earth comes between the Sun and the Moon and casts its shadow on the Moon, causing part or all of the
Moon to darken.
✨ Did you know?
Unlike a solar eclipse, you can safely watch a lunar eclipse with your naked eyes. 🌕
20. How long does Earth take to complete one revolution around the Sun?
Result:
💬 Answer:
The correct answer is (C). Earth takes about 365 days (one year) to
complete one revolution around the Sun.
📚 Explanation:
This revolution, along with the tilt of Earth’s axis, is responsible for the yearly cycle of
seasons.
✨ Did you know?
A leap year has 366 days to adjust for the extra 0.25 day in each revolution. 📅
21. If Earth’s axis were not tilted with respect to its orbit, what would happen to seasons?
Result:
💬 Answer:
The correct answer is (A). Without tilt, there would be almost no clear
seasons, and weather would remain nearly the same all year.
📚 Explanation:
The tilt causes different parts of Earth to receive more or less direct sunlight at different times,
creating summer and winter. Without tilt, sunlight would be almost uniform all year.
✨ Did you know?
Some planets, like Uranus, are tilted so much that they appear to rotate on their side,
giving them very extreme seasons. 🪐
22. Why don’t planets Mercury and Venus block the Sun’s light for us on Earth very often?
Result:
💬 Answer:
The correct answer is (A). Mercury and Venus are much smaller and far from us, so they
block only a very tiny portion of the Sun’s disc when they pass in front of it.
📚 Explanation:
Even when these planets come between Earth and the Sun, the event is seen as a small dot crossing the Sun
(called a transit), not as a large dark disc like in a solar eclipse by the Moon.
✨ Did you know?
Transits of Venus are very rare and occur in pairs separated by more than 100 years. 🌞🪐
23. What is the main difference between a solar and a lunar eclipse in terms of visibility on Earth?
Result:
💬 Answer:
The correct answer is (A). A lunar eclipse can be seen from a large part
of Earth, while a total solar eclipse can be seen only from a small region.
📚 Explanation:
Earth’s shadow on the Moon is very large, so many places can see it. But the Moon’s shadow on Earth during
a solar eclipse is quite small, covering only a narrow strip.
✨ Did you know?
People often travel to the path of a total solar eclipse to experience a few minutes of sudden
“artificial night”. 🌑
24. Which of the following correctly describes the Sun, Earth and Moon?
Result:
💬 Answer:
The correct answer is (A). The Sun is a star, the
Earth is a planet, and the Moon is Earth’s natural satellite.
📚 Explanation:
The Sun gives its own light and heat, Earth revolves around the Sun, and the Moon revolves around the
Earth and shines by reflected sunlight.
✨ Did you know?
The Earth–Moon system orbits the Sun together, making the Moon also indirectly orbit the Sun. 🌍🌕
25. Which motion of the Earth is mainly responsible for day and night?
Result:
💬 Answer:
The correct answer is (A). Rotation of Earth on its axis causes day and
night.
📚 Explanation:
As Earth spins, different parts face the Sun (day) or turn away from it (night). Revolution around the Sun
causes the yearly change in seasons, not day and night.
✨ Did you know?
At the equator, day and night are almost always close to 12 hours each throughout the
year. 🌍