Class 4 Evs - CBSE
Our Sky
The chapter Our Sky from the Class 4 EVS textbook Our Wondrous World introduces young learners to the wonders of the daytime and night sky. Students explore celestial objects like the Sun, Moon, and stars, and understand basic natural phenomena such as day and night, changing shapes of the Moon, and directions using the sun. This chapter is vital for CBSE exams as it builds foundational geographical and astronomical concepts, encouraging children to observe nature closely. Board-aligned questions often test students on sun movements, moon phases, and sky observation skills, making it a high-scoring and engaging topic for Class 4 learners.
Start Learning FreeKey Concepts
The Sun
A giant ball of hot, glowing gases that gives us heat and light, rising in the east and setting in the west.
The Moon
A natural satellite of the Earth that does not have its own light; it shines by reflecting sunlight and changes its shape every night.
Stars
Huge balls of burning gas that twinkle in the night sky and appear small because they are very far away from us.
Day and Night
The Earth's rotation causes the part facing the Sun to have day, while the other side facing away has night.
Phases of the Moon
The different shapes of the Moon we see from Earth, such as New Moon, Crescent Moon, and Full Moon.
Important Formulas
Board Exam Info
In CBSE Class 4 EVS examinations, this chapter typically carries around 4 to 6 marks. Common question types include fill-in-the-blanks, true or false, matching columns, short answer questions about sun/moon characteristics, and diagram-based questions on moon phases.
Frequently Asked Questions
Why do stars twinkle at night?
Stars twinkle because their light passes through different layers of moving air in Earth's atmosphere before reaching our eyes.
Does the Moon change its shape actually?
No, the Moon's shape does not change. Only the part of the Moon lit by the Sun that we can see from Earth changes, creating phases.
Why is it hot during the day and cool at night?
It is hot during the day because the Sun shines directly on us, and cool at night because the Sun is hidden and there is no sunlight.
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