by Tiwari Academy
NCERT Solutions for Class 7 Science Curiosity Chapter 12 Earth, Moon and the Sun for Session 2025-26. NCERT Curiosity Solution Gives well-explained answers to textbook questions, helping students understand key concepts such as rotation, revolution, eclipses and seasonal changes. These solutions clarify the scientific reasons behind day and night, phases of the Moon and the occurrence of solar and lunar eclipses. Class 7th Curiosity Solutions promote observational skills and curiosity about celestial phenomena, aiding effective learning and exam preparation.
Class 7 Science Solutions
Class 7 Science Curiosity Chapter 12 Solutions
Class 7 Science Curiosity Chapter 12 Very Short Answer Type Questions
What causes day and night on Earth?
See AnswerDay and night are caused by the rotation of the Earth on its axis from west to east.
What is the time taken by the Earth to complete one rotation?
See AnswerThe Earth takes approximately 24 hours to complete one rotation.
What is the shape of Earth’s orbit around the Sun?
See AnswerThe Earth revolves around the Sun in a nearly circular orbit.
What is a solar eclipse?
See AnswerA solar eclipse occurs when the Moon comes between the Sun and Earth, blocking sunlight.
What is the direction of the Earth’s rotation?
See AnswerThe Earth rotates from west to east.
Class 7 Science Curiosity Chapter 12 Short Answer Type Questions
Why does the Sun appear to move from east to west in the sky?
See AnswerBecause the Earth rotates from west to east, the Sun appears to rise in the east and set in the west from our perspective.
What is meant by revolution of the Earth?
See AnswerRevolution is the movement of the Earth around the Sun, which takes about 365 days and 6 hours to complete one full orbit.
How does the Moon cause a solar eclipse?
See AnswerThe Moon blocks sunlight when it aligns between the Earth and the Sun, casting a shadow on the Earth.
Why is it not safe to look at a solar eclipse directly?
See AnswerEven though the sunlight is partially blocked, looking directly can damage the eyes due to intense radiation.
What is a lunar eclipse?
See AnswerA lunar eclipse occurs when the Earth comes between the Sun and the Moon, casting a shadow on the Moon.
Class 7 Science Curiosity Chapter 12 Descriptive Answer Type Questions
How does Earth’s rotation cause the cycle of day and night?
See AnswerAs the Earth rotates on its axis, the half facing the Sun experiences daylight and the half facing away experiences night. This continuous motion creates the day-night cycle every 24 hours.
Explain how the tilt of the Earth leads to seasons.
See AnswerThe Earth’s axis is tilted. As it revolves around the Sun, different hemispheres receive different amounts of sunlight during the year, leading to summer, winter, spring and autumn.
Why do stars appear to move in the sky during the night?
See AnswerDue to Earth’s rotation, the stars seem to move from east to west, although they are stationary. This apparent motion is similar to how trees seem to move when we spin.
What is the apparent size and how does it relate to solar eclipses?
See AnswerApparent size depends on an object’s actual size and distance. Though the Moon is smaller, it’s closer to Earth than the Sun, so it can appear to cover the Sun during an eclipse.
Why do different stars appear in the sky at different times of the year?
See AnswerDue to Earth’s revolution around the Sun, we look at different parts of space in different months, making different stars visible in the night sky throughout the year.
Class 7 Science Curiosity Chapter 12 Exploring Questions
Why is the total solar eclipse visible only in a small area?
See AnswerThe Moon’s shadow covers a small region on Earth, so only observers in that narrow path experience a total eclipse. Elsewhere, it is partial or not visible.
What would happen if the Earth’s axis were not tilted?
See AnswerThere would be no variation in sunlight across the year, so Earth would not experience seasons—only a constant climate depending on location.
Why do the poles have six months of day and night?
See AnswerDue to Earth’s tilt, the poles face the Sun continuously for six months and remain in darkness for the next six months as Earth orbits the Sun.
Why can we safely view a lunar eclipse with the naked eye but not a solar eclipse?
See AnswerThe Moon reflects sunlight and is not bright enough to harm eyes during an eclipse. In contrast, the Sun’s rays are intense, even during an eclipse and can cause eye damage.
Why do places near the equator experience less seasonal variation?
See AnswerAt the equator, the Sun’s rays fall almost directly throughout the year, causing consistent temperature and day length, unlike regions farther from the equator.
What causes day and night according to Class 7 Science Curiosity Chapter 12?
In Class 7 Science Curiosity Chapter 12, it is explained that day and night are caused by the rotation of the Earth on its axis. The Earth rotates from west to east once every 24 hours. As a result, only the half of the Earth facing the Sun experiences daylight, while the other half remains in darkness, experiencing night. As the Earth keeps spinning, different parts move into and out of sunlight, creating the cycle of day and night. This rotation is continuous and forms the basis of our timekeeping and daily life activities.
Why do we have different seasons during the year, as explained in Class 7 Science Curiosity Chapter 12?
According to Class 7 Science Curiosity Chapter 12, the seasons occur due to the tilt of the Earth’s axis and its revolution around the Sun. The Earth is tilted at an angle of 66.5° and takes about 365 days to complete one revolution. This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year. When the Northern Hemisphere is tilted toward the Sun, it experiences summer, while the Southern Hemisphere has winter and vice versa. This changing sunlight pattern gives rise to the four main seasons—summer, winter, spring autumn.
What is a solar eclipse and how does it occur, according to Class 7 Science Curiosity Chapter 12?
Class 7 Science Curiosity Chapter 12 describes a solar eclipse as a phenomenon that occurs when the Moon comes between the Earth and the Sun, casting a shadow on Earth and partially or fully blocking sunlight. This can only happen during a new moon phase. If the alignment is perfect, the Moon covers the Sun completely, resulting in a total solar eclipse, but this is visible only in a small area of Earth. In most places, people observe a partial eclipse. Looking directly at a solar eclipse without protection is dangerous due to the Sun’s intense rays.
What should I focus on the most in Class 7 Science Curiosity Chapter 12?
Focus on understanding the rotation and revolution of the Earth and how they cause day and night and seasons. Also, learn how solar and lunar eclipses occur, why the Moon appears to change shape and how the Sun, Earth and Moon interact. Diagrams help a lot in this chapter, so practice drawing the positions for eclipses and phases of the Moon.
Are solar and lunar eclipses tough to understand in Chapter 12?
They’re easy if you use a simple model. Imagine the Sun, Earth and Moon in a line. In a solar eclipse, the Moon comes in between the Earth and Sun. In a lunar eclipse, Earth comes between the Sun and Moon. If you practice with diagrams or even use balls and a torch at home, it becomes really simple to understand and remember.
How can I remember the difference between rotation and revolution in Chapter 12?
Here’s a trick:
Rotation = Day and Night (Earth spins on its axis in 24 hours).
Revolution = Seasons (Earth moves around the Sun in about 365 days).
Make a chart or mind map, and connect it to real life—like how your shadow moves during the day (rotation) or why it’s colder in winter (revolution). That’ll make it stick!
