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Worksheet: Our Sky

Multiple Choice Questions (MCQs)

Q1: What color does the sky appear in the morning?
(a) Blue
(b) Orange and bright
(c) Red
(d) DarkMultiple Choice Questions (MCQs)

Q2: When the Sun is present in the sky, why are other stars not visible?
(a) They disappear during the day
(b) They are covered by clouds
(c) The Sun is very bright
(d) They move away

Q3: How are shadows at noon compared to morning and evening?
(a) Long
(b) Very dark
(c) Short
(d) Invisible

Q4: When is Diwali celebrated?
(a) On the Full Moon
(b) On the New Moon
(c) When the Moon is a crescent
(d) On the first night of the Moon

Q5: What did India's Chandrayaan mission aim to explore?
(a) Mars
(b) The Sun
(c) The Moon
(d) Venus

Fill in the Blanks

Q1: The Sun appears to move from ________ to ________ during the day.

Q2: Ancient people used the shape of the Moon to keep count of the ________.

Q3: On some nights, the Moon looks like the letter ________.

Q4: The Sun gives us ________ and ________.

Q5: If the object is close to the source of light, the shadow becomes ________.

Match the Following

Match the Following

Short Question Answers

Q1: What happens to the sky's color as the day progresses?

Q2: What is the significance of the Full Moon (Poornima) and the New Moon (Amavasya)?

Q3: Why do shadows in the morning and evening form in different directions?

Q4: What is the significance of the Chandrayaan mission?
Short Question Answers

Q5: How does studying the sky help us understand nature?

Vocabulary Activity - "Guess the Word"

Q1: A group of stars known as the Seven Sages in Indian astronomy.

Q2: The time of the day when the Sun is directly overhead and shadows are the shortest.

Q3: The phenomenon where an object blocks light and forms a dark shape.

Q4: The device built by Raja Jai Singh that tells time accurately based on shadow.

The document Worksheet: Our Sky is a part of the Class 4 Course EVS for Class 4 (Our Wondrous World: New NCERT).
All you need of Class 4 at this link: Class 4

FAQs on Worksheet: Our Sky

1. What are the different types of clouds and how do we identify them in the sky?
Ans. Clouds form in three main types based on height and shape: cumulus (puffy, white), stratus (flat, layered), and cirrus (wispy, high-altitude). Students identify them by observing their appearance, altitude, and weather patterns they indicate. Cloud formation occurs when water vapour condenses in the atmosphere, creating visible moisture patterns across the sky.
2. Why does the sky appear blue during the day and changes colour at sunrise and sunset?
Ans. The sky appears blue because sunlight scatters off air molecules, and blue light has shorter wavelengths that scatter more easily-a phenomenon called Rayleigh scattering. During sunrise and sunset, light travels through thicker atmosphere, scattering blue rays away and leaving orange and red wavelengths visible. This colour change demonstrates how light behaves differently at various angles above Earth.
3. How do we measure and predict weather changes by observing our sky?
Ans. Weather prediction relies on observing cloud types, wind patterns, air pressure changes, and humidity levels in the atmosphere. Dark, heavy clouds often indicate rain, while clear skies suggest fair weather. Students learn sky observation skills by noting atmospheric conditions daily, helping them understand how weather systems develop and identifying warning signs of storms or temperature shifts.
4. What causes the formation of rainbows and why do they only appear under certain conditions?
Ans. Rainbows form when sunlight refracts and reflects through water droplets in the atmosphere, separating white light into its component colours. They appear only when rain and sunshine occur simultaneously, with the observer positioned between the sun and rainfall. The rainbow's arc always appears opposite the sun's position, making it a predictable optical phenomenon in the sky.
5. What happens during day and night cycles, and how does Earth's rotation affect our sky experience?
Ans. Earth's rotation on its axis causes day-night cycles: one complete rotation takes 24 hours. During the day, the sun's position changes across the sky due to Earth's rotation, not the sun's movement. At night, stars become visible as darkness removes solar glare, revealing constellations and celestial objects normally hidden. This rotation explains why different parts of Earth experience different times simultaneously.
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