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

Wind is created when air...

  1. rises over a mountain

  2. air moves from low to high pressure

  3. when air moves from high to low pressure

  4. when warm air rises
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wind is the movement of air caused by differences in atmospheric pressure. Air naturally flows from areas of high pressure to areas of low pressure.

Multiple choice

If the air pressure decreases from one day to the next then...

  1. the temperature will rise

  2. the sky will be clear

  3. there will be lightning

  4. there will be clouds
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A decrease in air pressure is often associated with the arrival of a low-pressure system, which typically brings unstable air, cloud formation, and potential precipitation.

Multiple choice

If the air pressure increases from one day to the next then...

  1. the sky will be clear

  2. there will be rain

  3. there will be lightning

  4. there will be clouds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An increase in air pressure is typically associated with a high-pressure system, which generally brings stable, sinking air and clear, fair weather conditions.

Multiple choice physics forces and matter pressure in fluids pressure in liquids introduction to pressure
Fluids exert pressure on

  1. Air

  2. The container in which they are stored

  3. Both A and B

  4. Their own molecules which are present on the surface of the container
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A fluid is a substance that has no fixed shape and yields easily to external pressure; a gas or  a liquid.
Pressure is exerted by fluids because of their weight. 
Static fluid pressure is given as = $\rho \times g \times h$
where $h$ = depth of the fluid,
           $\rho$ = the density of the fluid and
           $g$ = the acceleration of gravity.
Hence they exert pressure in the container in which they are stored.

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

Ascent of sap will be maximum during

  1. Daytime

  2. Night time

  3. Early morning

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

Cohesion transpiration pull theory was put forward by Dixon and Jolly in 1894. It is also known as Dixon's theory of ascent of sap. During day time, there will be maximum water loss due to transpiration, hence, transpiration pull will also be maximum during day time. Consequently, maximum ascent of sap will occur during day time.

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

The following evidences rejected the atmospheric pressure theory. Which of them is correct?

  1. It can raise water to height of 33 feet only if complete vacuum is created.

  2. Free surface of water is required for proper operation of atmospheric pressure, which is readily available in plants.

  3. Pressure falls below that of atmospheric pressure because of transpiration.

  4. Water rises rapidly to compensate the water loss, because of atmospheric pressure.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Atmospheric pressure theory was advanced to explain ascent of sap in plants. The protagonists of this theory have assumed that plants are closed systems. When water escapes by transpiration from the surface of the leaves, it is believed that vacuum will be created within the plant body. As the root system is submerged in soil water, with the atmospheric action on the soil water, in order to fill up the vacuum created in the xylem vessels, water just enters passively; thus, the water is translocated upwards. But it was later on concluded that plants are not closed systems but they exhibit openness, for, the gases can diffuse into and out of the plant system with ease and facility. Added to this, atmospheric pressure can support the water to be lifted only to a height of 34 feet; but there are plants which are taller than this and still there is transport of water. Hence it can be concluded that atmospheric pressure could not be the force for ascent of sap.

Multiple choice chemistry changes around us effects of oxidation reactions in daily life corrosion of metals electroplating and its application

Mark the correct statement:
a) Damp air alone supplies both things needed for corrosion.
b) Ordinary water supplies both air and water for corrosion.
c) Moist air can't provide both things.

  1. a, b

  2. a, c

  3. b, c

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

Damp air supplies both the things needed for rusting of Iron. Ordinary water has some air dissolved in it. So, it can do the same.

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

Which of the following processes represents X?
River -> X -> Clouds

  1. Respiration

  2. Transpiration

  3. Combustion

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

In the given figure, X is evaporation. Evaporation is the process of conversion of water into vapour. Water vapour rises up into the atmosphere and cools down to form clouds.

So, the correct answer is option D.

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

If all the water vapor in the atmosphere were to condense and fall to the ground, the globe would be covered with about of water.

  1. 1 millimeter

  2. 1 inch

  3. 1 foot

  4. 1 meter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is a standard meteorological estimate that if all atmospheric water vapor were to precipitate at once, it would cover the globe to a depth of approximately 1 inch (about 25 mm).