NCERT Class 1 Environmental Studies • Classic CBSE EVS

Chapter 6: Earth & Sky

Q: What is the shape of planet Earth, and what two main parts cover its surface?

Model Answer:• Earth is round like a huge ball (slightly flattened at top and bottom).• Its surface is covered by Land (nearly 1/4th) and Water (nearly 3/4th).

Q: Explain the difference between a Plain, a Hill, and a Mountain.

Model Answer:• Plain: Flat, level land where most people live and grow crops.• Hill: Land that rises higher than the surrounding area.• Mountain: Very high, steep rocky landform, often with snow-covered peaks.

Q: What do we see in the sky during the daytime? What does the Sun give us?

Model Answer:During daytime, we see the bright Sun and white clouds in the blue sky. The Sun gives us light, warmth, and energy.

Q: In which direction does the Sun rise every morning, and in which direction does it set every evening?

Model Answer:• The Sun rises in the East.• The Sun sets in the West.

Q: What do you see in the sky at night?

Model Answer:We see the shining Moon and thousands of twinkling stars in the dark night sky.

Q: Does the Moon look the same every night? What is a full round Moon called?

Model Answer:No, the Moon changes its visible shape every night (from a thin crescent to a round circle). A full round moon is called the Full Moon (Poornima).

Q: Match each celestial body with its description:1. Sun &emsp;&emsp; (A) Cool light that changes shape2. Moon &emsp;&emsp; (B) Huge ball of fire that gi

Model Answer:• 1. Sun → (B) Huge ball of fire that gives daylight• 2. Moon → (A) Cool light that changes shape• 3. Stars → (C) Tiny twinkling points of light far away

Q: Fill in the blanks:(a) We live on planet _______ (Earth / Mars).(b) Very high mountains are covered with cold white _______ (snow / grass).(c) The Ear

Model Answer:(a) Earth(b) snow(c) oceans

Q: State True or False:(a) The stars are actually giant glowing balls like the Sun, but they appear tiny because they are extremely far away.(b) The Sun

Model Answer:(a) True. Vast distance makes stars look like dots.(b) False. Earth rotates on its axis.

Q: What is the low flat land between two mountains called?

Model Answer:The low land between two mountains or hills is called a Valley.

The Sun, Moon, Stars, Clouds, Day-Night Cycle & Horizon | CBSE Session 2026–27

Core Pedagogical Competencies & Concepts

Theme of 'Earth & Sky': Exploring human community networks and societal roles.
Fostering civic responsibility, mutual respect for community helpers, and safety rules.
Developing environmental stewardship and neighborhood awareness.

All Textbook Exercises & In-Text Tasks (16 Questions)

100% Complete Ingestion

Q1 Our Planet Earth • Shape & Composition

What is the shape of planet Earth, and what two main parts cover its surface?

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
• Earth is round like a huge ball (slightly flattened at top and bottom).
• Its surface is covered by Land (nearly 1/4th) and Water (nearly 3/4th).

CBSE Step-by-Step Marking Scheme

Round shape 1 M

Covered by land and water 1 M

Q2 Landforms • Plains, Hills, Mountains

Explain the difference between a Plain, a Hill, and a Mountain.

[3 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
• Plain: Flat, level land where most people live and grow crops.
• Hill: Land that rises higher than the surrounding area.
• Mountain: Very high, steep rocky landform, often with snow-covered peaks.

CBSE Step-by-Step Marking Scheme

Plain definition 1 M

Hill definition 1 M

Mountain definition 1 M

Q3 The Day Sky • The Sun

What do we see in the sky during the daytime? What does the Sun give us?

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
During daytime, we see the bright Sun and white clouds in the blue sky. The Sun gives us light, warmth, and energy.

CBSE Step-by-Step Marking Scheme

Sun and clouds in day sky 1 M

Gives light and warmth 1 M

Q4 Sunrise and Sunset • Directions

In which direction does the Sun rise every morning, and in which direction does it set every evening?

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
• The Sun rises in the East.
• The Sun sets in the West.

CBSE Step-by-Step Marking Scheme

Rises in East 1 M

Sets in West 1 M

Q5 The Night Sky • Moon and Stars

What do you see in the sky at night?

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
We see the shining Moon and thousands of twinkling stars in the dark night sky.

CBSE Step-by-Step Marking Scheme

Moon and twinkling stars 2 M

Q6 Phases of the Moon • Changing Shapes

Does the Moon look the same every night? What is a full round Moon called?

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
No, the Moon changes its visible shape every night (from a thin crescent to a round circle). A full round moon is called the Full Moon (Poornima).

CBSE Step-by-Step Marking Scheme

Changes shape nightly 1 M

Full Moon / Poornima 1 M

Q7 Matching • Celestial Bodies

Match each celestial body with its description:
1. Sun (A) Cool light that changes shape
2. Moon (B) Huge ball of fire that gives daylight
3. Stars (C) Tiny twinkling points of light far away

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
• 1. Sun → (B) Huge ball of fire that gives daylight
• 2. Moon → (A) Cool light that changes shape
• 3. Stars → (C) Tiny twinkling points of light far away

CBSE Step-by-Step Marking Scheme

All 3 matches correct 2 M

Q8 Fill in the Blanks • Earth & Sky

Fill in the blanks:
(a) We live on planet _______ (Earth / Mars).
(b) Very high mountains are covered with cold white _______ (snow / grass).
(c) The Earth looks blue from space because of vast _______ (oceans / forests).

[3 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
(a) Earth
(b) snow
(c) oceans

CBSE Step-by-Step Marking Scheme

Earth 1 M

snow 1 M

oceans 1 M

Q9 True or False • Astronomy

State True or False:
(a) The stars are actually giant glowing balls like the Sun, but they appear tiny because they are extremely far away.
(b) The Sun revolves around our house every day.

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
(a) True. Vast distance makes stars look like dots.
(b) False. Earth rotates on its axis.

CBSE Step-by-Step Marking Scheme

(a) True 1 M

(b) False 1 M

Q10 Valleys and Rivers • Landscapes

What is the low flat land between two mountains called?

[1 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
The low land between two mountains or hills is called a Valley.

CBSE Step-by-Step Marking Scheme

Valley 1 M

Q11 Why Sky Looks Blue • Atmosphere

What layer of air wraps around planet Earth like a protective blanket?

[1 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
The Atmosphere.

CBSE Step-by-Step Marking Scheme

Atmosphere 1 M

Q12 Clouds in Sky • Rain Bearers

What are clouds made of?

[1 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
Clouds are made of millions of tiny droplets of water and ice floating in the sky.

CBSE Step-by-Step Marking Scheme

Tiny water droplets floating in air 1 M

Q13 Odd One Out • Sky Features

Find the odd one out: [Sun, Moon, Stars, Mountain].

[1 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
Mountain is on Earth's land, while Sun, Moon, and Stars are heavenly bodies in the sky.

CBSE Step-by-Step Marking Scheme

Mountain with reason 1 M

Q14 Think and Share • Living Earth

Why is planet Earth the only known planet where humans, animals, and trees can live?

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
Because Earth has breathable air (oxygen), liquid water, and just the right temperature from the Sun.

CBSE Step-by-Step Marking Scheme

Air to breathe and water to drink 2 M

Q15 Compass Directions • Four Directions

Name the four cardinal directions.

[2 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
North, South, East, and West.

CBSE Step-by-Step Marking Scheme

North, South, East, West 2 M

Q16 Environmental Motto • Earth Care

What should we do to protect Mother Earth?

[1 Marks]

✅ Step-by-Step Solution & Working

Model Answer:
'Plant more trees, save clean water, reduce plastic waste, and love nature!'

CBSE Step-by-Step Marking Scheme

Protect Earth motto 1 M

🌟 NEP 2020 Competency-Based Case Study

Earth & Sky Civic Context Study

Every child is an important member of a vibrant neighborhood community. In 'Earth & Sky', learners explore how mutual support, civic awareness, and safety create a peaceful environment.

Analytical Task: How does understanding 'Earth & Sky' help us become caring and responsible citizens?

Evaluation & Model Answer:

It helps us appreciate the work of others, follow community rules, protect public places, and ensure the safety and happiness of everyone around us.

Rubric: 1.5 M for community understanding + 1.5 M for civic action