1361Every Day ScienceMedium
Very small time intervals are accurately measured by the___________?
AAtomic Clocks
MCQs
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Correct answer
A. Atomic Clocks
Explanation
Atomic Clocks is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Fogs
Explanation
Mist and Fog are the terms used to describe low visibility caused by water droplets suspended in the air. Mist is a term used to describe visibility of greater than 1 km while Fog is the term used when visibility is less than 1 km. Fog is effectively surface cloud and has a significant impact on the conduct of flying operations, particularly landing and take-off.
Correct answer
B. Radioactivity
Explanation
A Geiger counter (Geiger-Muller tube) is a device used for the detection and measurement of all types of radiation: alpha, beta and gamma radiation. Basically it consists of a pair of electrodes surrounded by a gas. The electrodes have a high voltage across them. The gas used is usually Helium or Argon.
Correct answer
C. Trade winds
Explanation
Trade winds are steady global winds that blow from east to west in the tropical regions, specifically from the subtropical high-pressure areas towards the equatorial low-pressure zone. These winds are also known as easterlies because they originate from the east and move westward.
Correct answer
A. Collapsing object of high density
Explanation
Collapsing object of high density is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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A. Monsoon
Explanation
Monsoon is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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B. 20
Explanation
20 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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A. Space waves
Explanation
Space waves are used for line-of-sight communication, such as in radio and television broadcasting.
Correct answer
D. O3
Explanation
O3 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Immunity
Explanation
Immunity is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.