Physics · Geography

Atmospheric Physics and Humidity

935 Questions

Study the principles of atmospheric physics and humidity through these practice questions. Key subjects include the rate of evaporation, temperature inversions, and relative humidity measurements. These concepts are vital for geography and physics exams.

Evaporation and condensationRelative humidity conceptsAtmospheric pressure effectsTemperature inversion

Atmospheric Physics and Humidity Questions

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

We sit in the room with windows open. Then

  1. Air pressure on the floor of the room equals the atmospheric pressure but the air pressure on the ceiling is eligible

  2. Air pressure is nearly the same on the floor, the walls and ceiling

  3. Air pressure on the floor equals the weight of the air coloumn inside the room (from floor to the ceiling) per unit area

  4. Air pressure on the walls is zero since the weight of air acts downward
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pressure of gas is same everywhere in the vessel.

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

What happens when pressure inside a sealed can is less than the atmospheric pressure?

  1. The can is crushed

  2. The can bursts

  3. No change is observed

  4. The can swells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When pressure inside a sealed can becomes less than the atmospheric pressure, the atmospheric pressure pushes the surface of the can inside and the can is crushed.

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

What happens, when the pressure inside a sealed bottle exceeds the atmospheric pressure?

  1. The bottle bursts out

  2. The bottle gets crushed

  3. The bottle remains as it is

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When the pressure inside a sealed bottle exceeds the atmospheric pressure, it bursts out.

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

The ordinary pressure of air surrounding us is

  1. 15 pounds

  2. 16 pounds

  3. 14.2 pounds

  4. 14.7 pounds
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

$Answer:-$ D

The ordinary pressure of the air surrounding us is 14.7 pounds per square inch, but the pressure can change when the wind blows or an object, like a car or airplane, accelerates.

One important principle to remember is that wherever the air pressure is higher, there will be a stronger force or push against an object. It’s also helpful to know that when an air particle speeds up, it actually “pushes” less. Imagine that fast-moving air particles are in so much of a hurry that they don’t have time to apply force. This principle is used in airplane wings to make planes fly. When a plane moves along the runway, the air above the wing speeds up more, lowering the pressure, so that the air below the wing can push the plane upward.

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

As the vertical height from mean sea level increases, the atmospheric pressure decreases.

  1. True

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

With increase in vertical height, the atmospheric pressure falls. Fall in pressure means that the temperature also falls. This is because pressure is directly proportional to Temperature and vice versa.

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 hydrogen-filled balloon expands as it rises and may even burst after rising very high in the atmosphere. This happens because

  1. The temperature increases with height

  2. The temperature decreases with height

  3. The atmospheric pressure increases with height

  4. The atmospheric pressure decreases with height
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The atmospheric pressure exists due to weight of atmospheric gases above a certain given height. As one goes high, the weight of atmosphere above decreases and so does the pressure. Thus for a balloon filled on ground, the pressure inside the balloon exceeds that outside and thus it bursts.

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

Why nose bleed when we go at high attitudes:

  1. because of decrease in temperature.

  2. because of decrease in air pressure.

  3. because of change in composition of air.

  4. all
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Air pressure decreases at high altitudes because the density of air decreases. It may cause the nose to bleed, especially if the individual has high blood 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

Atmospheric pressure .................... with altitude

  1. increases

  2. decreases

  3. remain constant

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

Atmospheric pressure decreases with altitude due to decrease in height of the air column, which causes a linear decrease in 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

Consider the following statements and identify the right ones.
I)Air pressure decreases when air descends.
ii) Air pressure at sea level is lower than at the mountain top.

  1. i only

  2. ii only

  3. Both

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

Air pressure increases when air descends and air pressure at sea level is more than at the mountain top, thus option D is correct.