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 weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

Why does weather change frequently?

  1. Because of humidity

  2. Because of temperature

  3. Because of rainfall

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

Weather is dynamic and changes frequently due to the constant interaction and variation of temperature, humidity, and precipitation patterns in the atmosphere.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

During summer, if you go near the lake, you feel relief from the heat, why?

  1. With no pressure over the lake and low pressure over land, the regional pressure gradient pushes cool winds towards the land.

  2. With high pressure over the lake and low pressure over land, the regional pressure gradient pushes cool winds towards the land.

  3. With no pressure over the lake and high pressure over land, the regional pressure gradient pushes cool winds towards the land.

  4. With high pressure over the lake and zero pressure over land, the regional pressure gradient pushes cool winds towards the land.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During summer, there occurs differential heating of the land and the water body near the land. The land mass is heated up quickly and the air over the land rises up, creating low pressure over the land. The water body takes time in getting heated up and so during the day, the water body has higher pressure due to heavy air than the land mass. Due to the pressure difference, the wind blows from the high pressure (water body) to the low pressure (land mass). These are called the sea-breeze. These winds are colder and that's why relief is felt near the lake on a hot summer day.

Hence, the correct answer is 'with high pressure over the lake and low pressure over the land, the regional pressure gradient pushes cool winds towards the land'.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

As the air temperature increases, with no addition of water vapor to the air, the relative humidity will:

  1. Remain the same

  2. Increase

  3. Decrease

  4. Increase until it becomes equal to the dew point temperature
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Relative humidity is inversely related to temperature when the amount of water vapor is constant. As temperature increases, the capacity of the air to hold water vapor increases, so the ratio (relative humidity) decreases.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

Which of the following will increase in a rising parcel of air?

  1. Saturation vapor pressure

  2. Relative humidity

  3. Mixing ratio

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

As a parcel of air rises, it expands and cools due to decreasing atmospheric pressure. Because the capacity of air to hold water vapor decreases as temperature drops, the relative humidity increases.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

The density of water vapor in a given parcel of air is expressed by the:

  1. Absolute humidity

  2. Relative humidity

  3. Mixing ratio

  4. Specific humidity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Absolute humidity is defined as the mass of water vapor in a given volume of air. It is a direct measure of the density of water vapor.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

If the air temperature remains constant, evaporating water into the air will _____________ the dew point and ___________ the relative humidity.

  1. Increase, increase

  2. Increase, decrease

  3. Decrease, increase

  4. Decrease, decrease
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Evaporating water into air adds water vapor, which increases the dew point. Since the temperature is constant, the increase in water vapor content raises the relative humidity.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

Which of the following weather elements always decreases as we climb upward in the atmosphere?

  1. Wind

  2. Temperature

  3. Pressure

  4. Moisture
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Atmospheric pressure is the weight of the air column above a point. As you climb higher, there is less air above you, so the pressure must decrease.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

Humidity influences corrosive action of

  1. Air pollutants

  2. Water Pollutants

  3. Solid material

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

Humidity, specifically the presence of water vapor, accelerates the oxidation process of metals and reacts with air pollutants to form corrosive acids, which damage materials.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

The time of day when the relative humidity reaches a maximum value is usually:

  1. At the time when the air temperature is highest

  2. In the middle of the afternoon

  3. At the time when the air temperature is lowest

  4. Just before sunrise
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Relative humidity is inversely related to temperature. Since the air temperature is usually lowest just before sunrise, the relative humidity reaches its maximum value at that time.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

Suppose saturated polar air has an air temperature and dew point of $-10^{o}C$, and unsaturated desert air has an air temperature of $35^{o}C$ and a dew point of $10^{o}C$. The desert air contains ____________ water vapor and has a ____________ relative humidity than the polar air.

  1. More, lower

  2. More, higher

  3. Less, lower

  4. Less, higher
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The desert air has a dew point of 10C, while the polar air has a dew point of -10C. Since dew point is a measure of absolute water vapor content, the desert air has more water vapor. However, because the desert air is much warmer, its capacity to hold water is much higher, resulting in a lower relative humidity.

Multiple choice botany environmental factors soil-nature climate factors abiotic components

When ELR is less than ALR, resulting environmental lapse rate is known as

  1. Super Adiabatic

  2. Sub-Adiabatic

  3. ELR

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

When the Environmental Lapse Rate (ELR) is less than the Adiabatic Lapse Rate (ALR), the atmosphere is stable, a condition referred to as sub-adiabatic.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

If there was no CO$ _2$ in the earth's atmosphere, the temperature of earth's surface would be 

  1. As such

  2. Less than the present level

  3. Increase from present level

  4. Dependent upon oxygen amount of the environment
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon dioxide is a greenhouse gas. It has the ability to trap sunlight and thus causes the increase in the temperature of Earth surface. If the situation on the Earth was with a lesser amount of $CO _2$, the temperature would have been very little. More pollution will cause the release of more $CO _2$ to the atmosphere causing global warming. 

Multiple choice biology environmental factors soil-nature climate factors abiotic components

Suppose last night was clear and calm. Tonight low clouds will be present. From this you would conclude that tonight's minimum temperature will be:

  1. Higher than last night's minimum temperature

  2. Lower than last night's minimum temperature

  3. The same as last night's minimum temperature

  4. Above freezing
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Clouds act as a blanket that traps longwave radiation emitted by the Earth's surface. Therefore, a cloudy night prevents heat from escaping into space, resulting in a higher minimum temperature compared to a clear, calm night.

Multiple choice evs respiration in organism human respiration the mechanism of breathing breathing and its movements

Which of the following is correct

  1. Inspired air has more oxygen content
  2. Expired air has more CO$ _2$ content

  3. Expired air has high water vapour content

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

Inspired air contains more oxygen whereas, the expired air contains more of carbon dioxide content as well as water vapours. Air enters with oxygen is diffused with carbon dioxide leading to the exchange of gases.