Class 4 EVS Practice Questions Chapter 10 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) Dark

Ans: (b) Orange and bright

Q2: What is the full Moon called in the chapter?
(a) Amavasya
(b) Poornima
(c) Saptarshi
(d) Chandrayaan

Ans: (b) Poornima

Q3: What device did ancient people use to tell time based on shadows?
(a) Clock
(b) Sundial
(c) Telescope
(d) Calendar

Ans: (b) Sundial

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

Ans: (b) On the New Moon

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

Ans: (c) The Moon

Fill in the Blanks

Q1: The Sun appears to move from ________ to ________ during the day.
Ans: East, West

Q2: The ________ is the night when the Moon is completely full.
Ans: Poornima

Q3: The ________ is the night when the Moon cannot be seen.
Ans: Amavasya

Q4: The ________ Lander of India’s Chandrayaan mission successfully landed on the Moon in 2023.
Ans: Vikram

Q5: The Saptarshi is a group of ________ in Indian astronomy.
Ans: Stars

Match the Following

Ans: 

Short Question Answers

Q1: What happens to the sky’s color as the day progresses?
Ans: In the morning, the sky is orange and bright. In the afternoon, it is blue and clear. At night, it turns dark with twinkling stars.

Q2: What is the significance of the Full Moon (Poornima) and the New Moon (Amavasya)?
Ans: The Full Moon, or Poornima, is when the Moon appears as a complete circle. The New Moon, or Amavasya, is when the Moon is not visible at all.

Q3: How did ancient people use shadows to tell time?
Ans: Ancient people used a device called a sundial, which used the shadow cast by the Sun to tell time accurately.

Q4: What is the significance of the Chandrayaan mission?
Ans: Chandrayaan is India’s mission to explore the Moon. In 2023, the Vikram Lander successfully landed on the Moon and gathered important data about its surface.

Q5: How does studying the sky help us understand nature?
Ans: Studying the sky helps us track time, understand natural cycles, and observe celestial events like the movement of the Sun, Moon, and stars.

Vocabulary Activity - "Guess the Word"

Q1: The night when the Moon is completely full.
Ans: Poornima

Q2: A tool used to tell time based on shadows.
Ans: Sundial

Q3: A group of stars known as the Seven Sages in Indian astronomy.
Ans: Saptarshi

Q4: The Moon is not visible during this phase.
Ans: Amavasya

Q5: India’s mission to explore the Moon.
Ans: Chandrayaan