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 evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

Water cycle leads to change in

  1. Pressure

  2. Humidity

  3. Temperature

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

During evaporation, water takes up energy from its surroundings and cools the environment. It releases energy when it condenses and warms the environment. This causes a change in the temperature as well as the humidity of the surrounding. Thus the correct answer is option D.

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

When the air temperature increases, the saturation vapor pressure will:

  1. Increase

  2. Decrease

  3. Remain the same

  4. Vary over an increasingly broad range of values
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Saturation vapor pressure is a function of temperature; as air temperature increases, the kinetic energy of water molecules increases, allowing more to exist in the vapor phase.

Multiple choice

The pressure exerted by a fluid at a given point is known as:

  1. Atmospheric pressure

  2. Gauge pressure

  3. Absolute pressure

  4. Hydrostatic pressure
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrostatic pressure is the pressure exerted by a fluid at a given point due to the weight of the fluid above that point.

Multiple choice

What is the principle behind the operation of a windsock?

  1. The movement of air causes the windsock to flutter

  2. The windsock is filled with helium and rises in the air

  3. The windsock is attached to a rotating shaft and spins in the wind

  4. The windsock is made of a material that changes color when exposed to wind
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A windsock operates based on the movement of air causing it to flutter.

Multiple choice

What is the minimum amount of fresh air that must be supplied to a mine?

  1. 100 cubic feet per minute (cfm) per person.

  2. 200 cfm per person.

  3. 300 cfm per person.

  4. 400 cfm per person.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The minimum amount of fresh air that must be supplied to a mine is 100 cubic feet per minute (cfm) per person.

Multiple choice

What is the main cause of convection?

  1. Differences in temperature

  2. Differences in pressure

  3. Differences in humidity

  4. Differences in wind speed
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Convection is mainly caused by differences in temperature.

Multiple choice

What is the lapse rate?

  1. The rate at which temperature decreases with height

  2. The rate at which pressure decreases with height

  3. The rate at which humidity decreases with height

  4. The rate at which wind speed decreases with height
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The lapse rate is the rate at which temperature decreases with height.

Multiple choice

What is the moist adiabatic lapse rate?

  1. 6.5 °C/km

  2. 3.5 °C/km

  3. 1.0 °C/km

  4. 0.5 °C/km
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The moist adiabatic lapse rate is 6.5 °C/km.

Multiple choice

What is the role of the lapse rate in convection?

  1. It determines the stability of the atmosphere.

  2. It determines the direction of convection.

  3. It determines the speed of convection.

  4. It determines the intensity of convection.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The lapse rate determines the stability of the atmosphere.

Multiple choice

What is a stable atmosphere?

  1. An atmosphere in which the lapse rate is greater than the dry adiabatic lapse rate.

  2. An atmosphere in which the lapse rate is less than the dry adiabatic lapse rate.

  3. An atmosphere in which the lapse rate is equal to the dry adiabatic lapse rate.

  4. An atmosphere in which the lapse rate is not related to the dry adiabatic lapse rate.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A stable atmosphere is an atmosphere in which the lapse rate is greater than the dry adiabatic lapse rate.

Multiple choice

What is an unstable atmosphere?

  1. An atmosphere in which the lapse rate is less than the dry adiabatic lapse rate.

  2. An atmosphere in which the lapse rate is greater than the dry adiabatic lapse rate.

  3. An atmosphere in which the lapse rate is equal to the dry adiabatic lapse rate.

  4. An atmosphere in which the lapse rate is not related to the dry adiabatic lapse rate.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An unstable atmosphere is an atmosphere in which the lapse rate is less than the dry adiabatic lapse rate.

Multiple choice

What is a conditionally unstable atmosphere?

  1. An atmosphere in which the lapse rate is less than the dry adiabatic lapse rate, but greater than the moist adiabatic lapse rate.

  2. An atmosphere in which the lapse rate is greater than the dry adiabatic lapse rate, but less than the moist adiabatic lapse rate.

  3. An atmosphere in which the lapse rate is equal to the dry adiabatic lapse rate.

  4. An atmosphere in which the lapse rate is not related to the dry adiabatic lapse rate.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A conditionally unstable atmosphere is an atmosphere in which the lapse rate is less than the dry adiabatic lapse rate, but greater than the moist adiabatic lapse rate.

Multiple choice

What are some of the factors that can cause instability in the atmosphere?

  1. Heating from the sun

  2. Cooling from the ground

  3. Evaporation of water

  4. Condensation of water
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

All of the above factors can cause instability in the atmosphere.