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Science - Everyday Science — Science Questions & Practice

Practise 63 Science - Everyday Science questions from Science for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Science - Everyday Science — with answers

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1. Which phenomenon is explained by: 'Caused by the refraction, dispersion and reflection of light in water droplets in the atmosphere'?

ATwinkling of Stars
BWhy Ice Floats on Water
CRainbow Formation
DWhy the Moon Appears to Change Shape

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Answer: C

This corresponds to 'Rainbow Formation'.

2. What is the scientific explanation for: Why the Sky is Blue?

ACaused by the changing angle at which sunlight illuminates the visible side of the Moon during its orbit
BTo amplify and listen to internal body sounds, such as the heartbeat and breathing
CBecause increased pressure raises the boiling point of water, allowing food to cook at a higher temperature
DCaused by the scattering of shorter wavelength blue light by particles in the Earth's atmosphere (Rayleigh scattering)

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Answer: D

'Why the Sky is Blue' relates to: Caused by the scattering of shorter wavelength blue light by particles in the Earth's atmosphere (Rayleigh scattering)

3. Which of the following correctly explains: Why the Sky is Blue?

ACaused by the atmospheric refraction of starlight as it passes through layers of air with varying density
BCaused by the scattering of shorter wavelength blue light by particles in the Earth's atmosphere (Rayleigh scattering)
CExplained by Bernoulli's principle, where differences in air pressure above and below the wings generate lift
DBecause atmospheric pressure decreases with altitude, lowering the boiling point of water

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Answer: B

'Why the Sky is Blue' relates to: Caused by the scattering of shorter wavelength blue light by particles in the Earth's atmosphere (Rayleigh scattering)

4. Which phenomenon is explained by: 'Caused by the scattering of shorter wavelength blue light by particles in the Earth's atmosphere (Rayleigh scattering)'?

AMirage
BWhy a Pencil Appears Bent in Water
CWhy We See Lightning Before Hearing Thunder
DWhy the Sky is Blue

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Answer: D

This corresponds to 'Why the Sky is Blue'.

5. What is the scientific explanation for: Mirage?

ABecause light travels much faster than sound
BAn optical illusion caused by the refraction of light through layers of air with different temperatures
CCaused by the changing angle at which sunlight illuminates the visible side of the Moon during its orbit
DBecause increased pressure raises the boiling point of water, allowing food to cook at a higher temperature

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Answer: B

'Mirage' relates to: An optical illusion caused by the refraction of light through layers of air with different temperatures

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Science - Everyday Science — Science Questions & Practice

Practice questions on Science - Everyday Science — with answers

1. Which phenomenon is explained by: 'Caused by the refraction, dispersion and reflection of light in water droplets in the atmosphere'?

2. What is the scientific explanation for: Why the Sky is Blue?

3. Which of the following correctly explains: Why the Sky is Blue?

4. Which phenomenon is explained by: 'Caused by the scattering of shorter wavelength blue light by particles in the Earth's atmosphere (Rayleigh scattering)'?

5. What is the scientific explanation for: Mirage?

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