1741Every Day ScienceMedium
Earth rotates the sun in___________?
A24 hours
MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
D. 23 hours 56 min 4 sec
Explanation
23 hours 56 min 4 sec is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Infrasonic
Explanation
Sounds with frequencies below 20 hertz are called infrasound. Infrasound is too low-pitched for humans to hear. Sounds with frequencies above 20,000 hertz are called ultrasound.
Correct answer
C. Stellar nurseries
Explanation
Stellar nurseries is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Advection
Explanation
Advection is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Nickel
Explanation
Nickel is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. It is about 350 km thick
Explanation
It is about 350 km thick is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Oxygen Production
Explanation
Oxygen Production is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Time
Explanation
A chronometer is a precise instrument used to measure time. A chronometer meter measures time very accurately, especially designed to withstand variations in temperature, humidity, and air pressure, making it ideal for precise timekeeping, particularly in navigation at sea. Key points about a chronometer: High precision: It is designed to measure time with a very high degree of accuracy, often within a few seconds per day. Marine navigation: Historically, chronometers were crucial for determining longitude at sea by comparing the time at a known location with the time at the ship’s current location. Testing standards: To be considered a chronometer, a watch must pass rigorous testing by a certified organization to ensure its accuracy under various conditions.
Correct answer
B. Axiology
Explanation
Axiology is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. 1609.34
Explanation
1609.34 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.