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Why does the sky appears dark instead of blue to astronauts ?
Science
Science

Class 10

NCERT

Publisher:
NCERT
Subject:
Science
1

Chapter 1: Chemical Reactions and Equations

34 questions

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2

Chapter 2: Acid,Bases and Salts

39 questions

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3

Chapter 3: Metals and Non-metals

38 questions

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4

Chapter 4: Carbon and its Compound

24 questions

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5

Chapter 5: Periodic Classification of Elements

30 questions

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6

Chapter 6: Life Processes

13 questions

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7

Chapter 7: Control and Coordination

12 questions

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8

Chapter 8: How do Organism Reproduce?

11 questions

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9

Chapter 9: Heredity and Evolution

12 questions

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10

Chapter 10: Light -Reflection and Refraction

34 questions

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11

Chapter 11: The Human Eye and Colourful World

18 questions

Q1
Why does the Sun appear reddish early in the morning?
Q2
Why does the sky appears dark instead of blue to astronauts ?
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12

Chapter 12: Electricity

49 questions

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13

Chapter 13: Magnetic Effects of Electric Current

39 questions

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14

Chapter 14: Sources of Energy

24 questions

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15

Chapter 15: Our Environment

9 questions

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16

Chapter 16: Sustainable Management of Natural Resources

7 questions

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Question
Medium
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Solving time: 2 mins

Why does the sky appears dark instead of blue to astronauts ?

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Updated on: Jun 4, 2023

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When sunlight passes through the atmosphere, the fine particles in air scatter the blue colour (shorter wavelength more strongly than red. The scattered blue light enters our eyes. If the earth had no atmosphere, there would not have been any scattering . Then the sky would have looked dark. The sky appears dark to astronaut flying at very high attitude, as scattering is not proent at such heights. 
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Question Text
Why does the sky appears dark instead of blue to astronauts ?
Updated OnJun 4, 2023
TopicThe Human Eye and Colourful World
SubjectScience
ClassClass 10
Answer TypeText solution:1 Video solution: 7
Upvotes698
Avg. Video Duration4 min