Explanation

In the metric system, the SI unit of length is a meter which is

defined as: “The length of the path traveled by light in a vacuum within 1⁄299792458 seconds.”

Common symbols: l

ND18-9-2023

Explanation

Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s)

1 kW = 1000 J/s. 

Additional Information:

The SI Unit of power is Watt.

1 Watt = 1 Joule/second.

1 Joule = 1 Newton-meter

1 Watt = 1 Newton=meter/second

NA21-8-2023

Explanation

Explanation

The Dobson Unit is the most common unit for measuring ozone concentration

The Dobson unit is named after Gordon Dobson,

 in the 1920s built the first instrument to measure total ozone from the ground

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All Important Questions Related to "OZONE"

The stratospheric ozone layer is Earth's “sunscreen”  protecting living things from too much ultraviolet radiation from the sun.

Oxygen layer in the atmosphere

Ozone protects us from the harmful ultraviolet radiation of the sun.

Ozone formula: O3

The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.

The ozone layer is depleting: Air pollution

There is a hole in the Ozone layer at South Pole

ND17-7-2023

Explanation

Nitrogen is the chemical element with the  atomic number 7.

Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table

Symbol: N

Explanation

When an action is produced with the involvement of thoughts, they are called voluntary action.

It involves actions like walking, eating, jumping and running.

Explanation

Solids are packed together tighter than liquids and gases, hence sound travels fastest in solids

Sound can not travel through vaccum 

Explanation

Light Year is the distance that light can travel in one year.

The distance light travels in one year is known as light year.

Explanation

A hygrometer is an instrument used to measure the amount of water vapor in air, in soil, or in confined spaces.

Explanation

A current is a flow of electric charge.

In electric circuits this charge is often carried by moving electrons in a wire.

The SI unit of electric current is the ampere.