Facts About Weather

Question 1:

Why Does the Weather Change Many Times During the Day?

Answer:

Weather changes daily due to wind currents, humidity, temperature and water cycle.
Whereas seasonal changes occur because of the revolution of Earth around the Sun.

Question 2:

The Thermometer That We Use for Measuring the Air Temperature Contains Mercury. Why Not Any Other Substance Used Instead of Mercury?

Answer:

The thermometer is a device used to measure the degree of hotness or coldness of an object, body or place.
A clinical thermometer is used for measuring the body's temperature, whereas a laboratory thermometer is used to measure the temperature of the surroundings.
Mercury is the only metal that remains in liquid at room temperature.
It can contract or expand with the slightest change in the temperature; hence used mostly.

Question 3:

Why Is the Weather in the Mountain Area Colder Than in the Area Near the Sea?

Answer:

As we move to the heights, the air density decreases, leading to a fall in the concentration of gases in the air.
A decrease in the amount of carbon dioxide leads to a fall in temperature as it plays a prominent role in absorbing the Sun’s heat and maintaining an optimum temperature.

variation of Change in climate with altitude

Question 4:

What Causes Thunder in Rainy Clouds?

Answer:

We see huge lightning due to the collision of big rainy clouds with each other.
When this light travels towards Earth, it passes through the clouds, creating a path amidst the atmosphere or air.
It takes place very quickly. This sudden expansion of air leads to the production of loud noise, which we hear as thunder.

Question 5:

What Do You Understand About the Elements of Weather?

Answer:

The atmospheric factors that act together to influence the weather of a place are called elements of weather. They are temperature, sunlight, humidity, rainfall, wind currents, atmospheric pressure and cloudiness.