Sound speed - Marvel Education

Loading question...

You are in free guest mode. Timed Practice Revision List Attempt History Progress Tracking Create a free account to unlock these tools

Prev Next

Practice Reading: Fill in The Blanks (Drag & Drop) ID: #37184 July Prediction Sound speed

Instructions ›

* Drag the correct answer into all target fields

The speed of sound (otherwise known as Mach 1) varies with temperature. At sea level on a 'standard day', the temperature is 59F, and Mach 1 is approximately 761 mph. As the altitude increases, the temperature and speed of sound decrease until about 36,000 feet, after which the temperature steady until about 60,000 feet. Within that 36,000 60,000 foot range, Mach 1 is about 661 mph. Because of the , it is possible for an airplane flying supersonic at high altitude to be slower than a subsonic flight at sea level. The transonic band (the 'sound barrier‘) extends around Mach 0.8 — when the first supersonic shock waves form on the wing — to Mach 1.2, when the entire wing has gone supersonic.

differences from both either remains via tends towards variation

Result:

A.I. Explanation:

Correct answer: both
Explanation: The word 'both' is used to indicate that two elements, the temperature and the speed of sound, are decreasing simultaneously. This fits grammatically as it serves as a conjunction that connects the two subjects, maintaining the sentence's structure and context.
Meaning: 'Both' refers to two items or elements together, in this case, temperature and speed of sound.
Wrong options:
via: The word 'via' means 'by way of' and does not fit grammatically or contextually as it does not indicate a relationship between temperature and speed of sound.
towards: The word 'towards' indicates direction and does not fit in this context as it does not relate to the decrease of temperature and speed of sound.
either: The word 'either' suggests a choice between two options, which does not apply here since both elements are decreasing, not one or the other.
variation: The word 'variation' refers to a change or difference, which does not fit as it does not indicate the simultaneous decrease of both elements.
differences: The word 'differences' refers to distinctions between items, which does not apply here as we are discussing a decrease, not differences.
remains: The word 'remains' indicates something staying the same, which contradicts the context of decrease.
tends: The word 'tends' suggests a tendency or inclination, which does not fit as it does not indicate a definitive decrease of both elements.
Correct answer: remains
Explanation: The word 'remains' is used to indicate that the temperature stays constant after the initial decrease. It fits grammatically as it serves as a verb that describes the state of the temperature, aligning with the context of the passage.
Meaning: 'Remains' means to stay in the same state or condition without change.
Wrong options:
via: The word 'via' means 'by way of' and does not fit grammatically or contextually as it does not describe the state of temperature.
towards: The word 'towards' indicates direction and does not fit in this context as it does not relate to the temperature's constancy.
both: The word 'both' refers to two items together, which does not apply here as we are discussing the state of temperature alone, not two elements.
variation: The word 'variation' refers to a change or difference, which contradicts the context of the temperature remaining steady.
differences: The word 'differences' refers to distinctions between items, which does not apply here as we are discussing the constancy of temperature, not differences.
tends: The word 'tends' suggests a tendency or inclination, which does not fit as it does not indicate a definitive state of the temperature.
Correct answer: variation
Explanation: The word 'variation' refers to the changes in temperature and speed of sound, which is crucial to understanding the context of the passage. It fits grammatically as a noun that describes the concept of change, aligning with the discussion of how altitude affects these factors.
Meaning: 'Variation' refers to a change or difference in condition, amount, or level, particularly in the context of temperature and speed of sound.
Wrong options:
via: The word 'via' means 'by way of' and does not fit grammatically or contextually as it does not describe the changes in temperature and speed of sound.
towards: The word 'towards' indicates direction and does not fit in this context as it does not relate to the concept of change.
both: The word 'both' refers to two items together, which does not apply here as we are discussing the concept of variation, not two elements.
differences: The word 'differences' refers to distinctions between items, which does not apply here as we are discussing a change, not differences.
remains: The word 'remains' indicates something staying the same, which contradicts the context of variation and change.
tends: The word 'tends' suggests a tendency or inclination, which does not fit as it does not describe the concept of variation.
Correct answer: from
Explanation: The word 'from' is used to indicate the starting point of the transonic band, which is essential for understanding the range of Mach numbers. It fits grammatically as a preposition that establishes a relationship between the starting point and the endpoint of the range.
Meaning: 'From' indicates the starting point of a range or movement, in this case, the beginning of the transonic band.
Wrong options:
via: The word 'via' means 'by way of' and does not fit grammatically or contextually as it does not indicate a starting point.
towards: The word 'towards' indicates direction and does not fit in this context as it does not relate to the starting point of the range.
both: The word 'both' refers to two items together, which does not apply here as we are discussing a single starting point, not two elements.
variation: The word 'variation' refers to a change or difference, which does not fit as it does not indicate a starting point in the context of the transonic band.
differences: The word 'differences' refers to distinctions between items, which does not apply here as we are discussing a range, not differences.
remains: The word 'remains' indicates something staying the same, which contradicts the context of indicating a starting point.

PoS Classification

With a free account: Retry and compare every attempt.

How difficult was this question?

Others found: 100% Easy · 0% Medium · 0% Hard

Saving...