Physics · Geography

Atmospheric Physics and Humidity

878 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 biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

If CO$ _2$ is absent in atmosphere of earth then 

  1. Temperature will decrease

  2. Temperature will increase

  3. Plants will flourish well

  4. No effect
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The total carbon dioxide content in the atmosphere is 0.03%. The percentage of carbon dioxide is balanced by respiration and photosynthesis. Solar radiation falls on earth's surface heating it, while a small proportion is reflected back, and earths surface re-emits heat in the form of infrared radiation but part of this does not escape into space as atmospheric gases (e.g., carbon dioxide, methane, etc.) absorb a major fraction of it. These gases like carbon dioxide and methane are commonly known as greenhouse gases because they are responsible for the greenhouse effect. Increase in the level of greenhouse gases has led to considerable heating of earth leading to global warming. Thus, the correct answer is option A..

Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Excess atmospheric $CO _2$ increases green house effect as $CO _2$

  1. Is opaque to infra-red rays

  2. Is not opaque to infra-red rays

  3. Precipitates dust in the atmosphere

  4. Reduces atmospheric pressure
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon dioxide is a greenhouse gas. It absorbs the long wavelength infrared radiations. The chemical bond between carbon and oxygen absorb infrared light very well and traps the heat from escaping, so they are considered to be opaque to the infra-red rays as these cannot pass across the carbon dioxide. Carbon dioxide molecules vibrate on receiving energy from the photon and allows molecules to capture the infrared photons (radiation). 

Hence, the correct answer is 'Is opaque to infra-red rays'

Multiple choice maths unchanging relations algebra aid introduction to unknowns measures and relations

Some situations are given below. State true or false:
The temperature of a day is variable.

  1. True

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

Since the temperature of a day depends on the weather. For example, in summers, the temperature will be higher in Celsius whereas in winters, the temperature is low in Celsius. Therefore, the temperature always varies.


Hence, the given statement "The temperature of a day is variable." is true.

Multiple choice chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

Temperature of troposphere decreases with altitude. This is because of_____.

  1. high pressure of air

  2. gases present in air

  3. low density of air

  4. all of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Generally, temperatures decrease with increasing height because the atmosphere distributes itself according to gravity.

In the troposphere, the temperature generally decreases with altitude. The reason is the troposphere's gases absorb very little of the incoming solar radiation. Instead, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection.
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 physics forces and matter pressure in fluids pressure in liquids introduction to pressure

Pressure inside an inflated balloon is

  1. Less than atmospheric pressure

  2. Greater than atmospheric pressure

  3. Equal to atmospheric pressure

  4. May be less than or equal to atmospheric pressure
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The stretched rubber membrane of an inflated balloon exerts an inward elastic force on the enclosed air, which means the pressure of the air inside must be greater than the atmospheric pressure outside to maintain equilibrium and keep the balloon inflated.

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.