Question 1

State whether these sentences are true (T) or false (F).Air moves from low pressure to high pressure.

Accepted Answer

False,When warm air rises, cooler air will often move in to replace it, so wind often moves from areas where it's colder to areas where it's warmer. So in the northern hemisphere, winds blow clockwise around an area of high pressure and counter-clockwise around low pressure.

Question 2

The horizontal movement of air is called ________.

Accepted Answer

Wind is defined as the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction whereas breeze is the gentle wind.

Question 3

Which one of the following is generally not considered a major element of weather and climate?

Accepted Answer

The
state of atmosphere over an area at any point of time is known as weather. It
is the state of the atmosphere over short periods of time. Weather can change
from hour to hour, day to day, month to month or even year to year. Weather
pattern recorded for more than 30 years of a region is considered its climate.Following are the major elements of weather and climate:-PrecipitationHumidityAir temperatureAir pressureWind speed

Question 4

Match the List I with List 2.

Accepted Answer

Trade winds    -  Permanent windLoo                  -  Local windMonsoon         - Seasonal windWind                -  Horizontal movement of air

Question 5

Short AnswerWhy do astronauts wear special protective suits when they go to the moon?

Accepted Answer

Astronauts must wear spacesuits whenever they leave a spacecraft and are exposed to the environment of space. In space, there is no air to breath and no air pressure. Space is extremely cold and filled with dangerous radiation. Without protection, an astronaut would quickly die in space.

Question 6

Short AnswerWrite short note on the distribution of air pressure in atmosphere.

Accepted Answer

Air pressure is the pressure exerted by the weight of air on the earth's surface. As we go up the layers of the atmosphere, the pressure falls rapidly. The air pressure is highest at the sea level and decreases with height. Horizontally the distribution of air pressure is influenced by the temperature of the air at a given place. In areas where the temperature is high the air gets heated and rises. This creates a low-pressure area. In areas having lower temperature, the air is cold, hence, it is heavy. Heavy air sinks and creates a high-pressure area.

Question 7

Where is air pressure highest?

Accepted Answer

Air pressure is highest at the sea level.

Question 8

Answer the following question very shortly.What is weather?

Accepted Answer

Weather is hour-to-hour, day-to-day condition of the atmosphere.

Question 9

In the Earth's atmosphere, the atmospheric pressure  ________.

Accepted Answer

As we go up the pressure decreases with altitude.

This is because at higher altitudes number of air molecules present are
low when compared to those that are present in the lower atmosphere.

Moreover gravitational pull which is responsible for atmospheric
pressure is low on the molecules that are away from its surface than those that
are closer to it.

Question 10

The equatorial and polar regions of the earth receive unequal solar heat. The convection current arising due to this is called:

Accepted Answer

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Quick Summary With Stories

Weather and Climate

Wind

Moisture

Important Questions

State whether these sentences are true (T) or false (F).
Air moves from low pressure to high pressure.

The horizontal movement of air is called ________.

Which one of the following is generally not considered a major element of weather and climate?

Match the List I with List 2.

Short Answer
Why do astronauts wear special protective suits when they go to the moon?

Short Answer
Write short note on the distribution of air pressure in atmosphere.

Where is air pressure highest?

Answer the following question very shortly.
What is weather?

In the Earth's atmosphere, the atmospheric pressure ________.

The equatorial and polar regions of the earth receive unequal solar heat. The convection current arising due to this is called: