Class 4 Evs - ODISHA
Our Sky
The chapter 'Our Sky' for Class 4 students under the Odisha Board (BSE) introduces young learners to the wondrous world above us. Students explore the sun, moon, stars, and clouds, learning how the sun gives us heat and light, why the moon changes its shape through different phases, and how day and night are formed. This chapter builds basic scientific observation skills and curiosity about nature. For board exams, it is very important as it forms the foundation for environmental and space science concepts, frequently featuring in short-answer questions, fill-in-the-blanks, and diagram-based questions.
Start Learning FreeKey Concepts
The Sun
A giant ball of hot burning gases that gives us heat and light, helping plants make food and keeping life alive on Earth.
The Moon
Earth's natural satellite that does not have its own light but shines by reflecting the sunlight and changes its shape every night.
Stars
Tiny-looking twinkling objects in the night sky that are actually huge, hot balls of glowing gas situated very far away from us.
Clouds
Fuffy collections of tiny water droplets floating in the sky that bring us rain and shade.
Day and Night
The natural cycle caused by the rotation of the Earth, where the side facing the sun has day and the other side has night.
Important Formulas
Board Exam Info
In the Odisha (BSE) Class 4 EVS assessments, 'Our Sky' typically carries around 5 to 8 marks. Common question types include multiple-choice questions, matching the columns (e.g., Sun, Moon, Stars), short answer questions about day and night, and drawing or labeling simple sky objects.
Frequently Asked Questions
Why do stars twinkle at night?
Stars twinkle because their light travels through the moving layers of Earth's atmosphere before reaching our eyes, making them look like they are blinking.
Why does the moon change its shape?
The moon does not change its shape; we only see different parts of the illuminated side of the moon as it revolves around the Earth.
Why can we not see stars during the day?
We cannot see stars during the day because the bright light of the sun is too strong and hides the faint light of distant stars.
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