What is atmospheric refraction? Use this phenomenon to explain the following natural events. (a) Twinkling of stars (b) Advanced sun-rise and delayed sun-set. Draw diagrams to illustrate your answers.
What is atmospheric refraction? Use this phenomenon to explain the following natural events. (a) Twinkling of stars (b) Advanced sun-rise and delayed sun-set. Draw diagrams to illustrate your answers.
Atmospheric refraction is the bending of light as it passes through the Earth's atmosphere due to the gradual change in air density.
Marking Scheme
- 1Definition of atmospheric refraction (1 mark)
- 2Explanation of twinkling of stars (1.5 marks)
- 3Explanation of advanced sunrise and delayed sunset (1.5 marks)
- 4Diagrams to illustrate answers (1 mark)
Hint
Think about how light bends as it passes through the Earth's atmosphere and how this affects our perception of celestial objects.
Quick Oral Answer
Atmospheric refraction is the bending of light as it passes through the Earth's atmosphere. This phenomenon is responsible for the twinkling of stars and the advanced sunrise and delayed sunset.
Analysis & Explanation
Atmospheric refraction is responsible for several natural events, including the twinkling of stars and the advanced sunrise and delayed sunset.
Common Mistakes
- 1Confusing atmospheric refraction with other types of refraction
- 2Failing to explain the twinkling of stars and advanced sunrise and delayed sunset in terms of atmospheric refraction
Interesting Facts
The Earth's atmosphere is made up of different layers, each with its own unique characteristics and effects on light.
Atmospheric refraction is responsible for the beautiful colors we see during sunrise and sunset.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2016?
This question carries 5 marks in the CBSE Class 10 Science 2016 examination.
Which chapter does this question come from in Science?
This question is from the chapter "The Human Eye and the Colourful World" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Atmospheric Refraction" from CBSE Class 10 Science.
Has this question appeared in other CBSE Science papers?
Yes, a similar question appeared in the 2016 CBSE Class 10 Science paper.
What type of question is this in the CBSE Class 10 Science 2016 paper?
This is a Long Answer question from Section A in the CBSE Class 10 Science 2016 paper.