Chapter 10 of the Class 4 EVS textbook Our Wondrous World is Our Sky. It introduces children to the sun, moon, stars, and simple observations about day, night, and the changing sky.
The Sun, Moon, and Stars
Q: What can we see in the sky during the day and at night?
A: During the day, we mainly see the sun and sometimes the moon and clouds; at night, when the sky is clear, we can see the moon and many stars.
Day and Night
Q: Why do we have day and night?
A: We have day and night because the Earth spins on its axis; the side facing the sun experiences day, while the side facing away from the sun experiences night.
Changing Shape of the Moon
Q: Does the moon always look the same in the sky?
A: No, the moon appears to change shape over about a month, going from a thin crescent to a full round moon and back again — these different appearances are called the phases of the moon.
Frequently Asked Questions
Why does the sun appear to move across the sky during the day?
The sun appears to move because the Earth is rotating, not because the sun itself is moving around the Earth.
Why can we usually see more stars on a clear night than a cloudy one?
Clouds block our view of the sky, so on a clear night with no clouds, more stars become visible.
Class 4 EVS Chapter 10 – Notes and Extra Questions
Along with these NCERT Solutions, students can also use the Class 4 EVS Chapter 10 Extra Questions and Class 4 EVS Chapter 10 Revision Notes for quick revision and extra practice.
