Tag: common consequences of the atmospheric pressure

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Questions Related to common consequences of the atmospheric pressure

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

What will happen to submaximal heart rate during exercise at altitude for any given level of submaximal oxygen consumption when compared to sea level?

  1. increase

  2. decrease

  3. remain the same

  4. depends on the type of activity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Since at high altitude oxygen concentration is less in compare to that at sea level hence rate of ${ O } _{ 2 }$ consumption increases leading to increase in heart rate.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

It has been shown that those who successfully deal with altitude have

  1. weak hypoxic ventilatory drives

  2. a lower arterial PO2.

  3. strong hypoxic ventilatory drives.

  4. the ability to hypoventilate.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Those who successfully deal with altitude have strong hypoxic ventilatory drives.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

Which of the following strategies would likely result in the optimal adaptations?

  1. Live at high altitude, train at low altitude.

  2. Live at low altitude, train at high altitude.

  3. Live and train at low altitude.

  4. Live and train at high altitude.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The best conditions for an athlete to get adapted to is to live in less ${ O } _{ 2 }$ concentration region & train at high ${ O } _{ 2 }$ concentration region, i.e. live at high altitude & train at low altitude.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

Which of the following is a physiological change that has been shown to occur as a result of exposure to extreme altitudes?

  1. increases in muscle fiber area

  2. increases in mitochondrial volume

  3. decreases in muscle fiber area

  4. both a and b
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When a person reside at high altitude where oxygen concentration is very less, then their muscle fibre area decreases for maximization of oxygen carrying capacity.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure


Training at high altitude for performances at sea level may not result in improved performance. Why?

  1. athletes may actually detrain at high altitude.

  2. going back to sea level results in decreased hemoglobin concentration.

  3. the higher air density at sea level offsets any improvements made at altitude

  4. all of these.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Less Oxygen concentration at high altitudes may lead to detrain of athletes as compared to when the performance is at sea level.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

Which of the following factors would help maintain body temperature in cold water?

  1. higher body fat stores.

  2. wearing layers of clothing.

  3. vigorous movement.

  4. All of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$Answer:-$ A

If you have higher body fat more fat will be burned and more and more calories of energy are produced inside body to maintain its normal temperature.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

Which of the following statements is false?

  1. Atmospheric pressure decreases with increasing altitude.

  2. The air is less dense at high altitudes compared to sea level.

  3. The percentage of oxygen in the air decreases with increasing altitude.

  4. Each liter of air contains fewer molecules of gas at increasing altitude.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The percentage of oxygen in the air decreases with increasing altitude.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

State true or false.
Atmospheric pressure decreases with increase in height.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is to be remembered that 

P = Po - Sgh;  here h is the height above the ground level.
Hence atmospheric pressure decreases with increase in height.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

Which of the following pollutants does not affect lung function in normal adults but causes bronchoconstriction in asthmatics?

  1. ozone

  2. sulfur dioxide

  3. carbon monoxide

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulfur dioxide does not affect lung function in normal adults but causes bronchoconstriction in asthmatics.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

A narrow uniform glass  tube $80\ cm$ long and open at both ends is half immersed in mercury. Then, the top of the tube is closed and it is taken out of mercury. A column of mercury $22\ cm$ long then remains in the tube. What is the atmospheric pressure?

  1. $60\ cm$ of $Hg$

  2. $70.9\ cm$ of $Hg$

  3. $76\ cm$ of $Hg$

  4. $none$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using Boyle's Law (P1V1 = P2V2) for the trapped air, the atmospheric pressure can be calculated based on the mercury column height and the tube dimensions.