Tag: physics

Questions Related to physics

Lightning is:

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. caused by accumulation of charges in cloud

  2. caused by dispersion of charges in cloud

  3. caused by rotation of charges in cloud

  4. none of the above

Show answer
Correct Option: A
Explanation:

Due to accumulation of charges in cloud in large amount ,the air present near the cloud being non-conductive,no more resists the flow of charges and lightning takes place.

State whether the given statement is True or False :

Whenever there is a lightning, there is an earthquake. 

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

This statement is false. Earthquake and lightning are two exclusive natural phenomena having no connection between each other.

State whether true or false:
A spark of lightning occurs when negative charges jump from one charged cloud to another.

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. True

  2. False

Show answer
Correct Option: A

All living things depend on which chemical element?

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. Oxygen

  2. Nitrogen

  3. Hydrogen

  4. Phosphorous

Show answer
Correct Option: B
Explanation:

Proteins are the building blocks of life. Major components of protein are nitrogen, oxygen and carbon. Hence, liiving things are depended on these three elements for survival.

Which nutrient is produced when large amount of energy breaks the atom bonds of nitrogen?

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. Protein

  2. Mineral

  3. Iron

  4. Calcium

Show answer
Correct Option: A
Explanation:

Energy in the lightning can break the strong bond between the nitrogen molecules. Atoms separated are than free to combine with other elements. Proteins forms the building block of life is composed of nitrogen, carbon and oxygen.

State whether the given statement is True or False :

Forest fires were beneficial for the plantations which grew after these fires which were caused due to lightning. 

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. True

  2. False

Show answer
Correct Option: A

How much percentage of atmosphere is made of nitrogen?

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. $78$percent

  2. $90 $percent

  3. $88 $percent

  4. $82 $percent

Show answer
Correct Option: A
Explanation:

Air consist of $78$% nitrogen. 

How does lightning help the atmosphere?

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. Increases the temperature

  2. Brings rain

  3. Increases the ozone layer

  4. Unsure

Show answer
Correct Option: C
Explanation:

Explanation: Lightning causes large electric discharge in the atmosphere resulting in the formation on $\displaystyle { O } _{ 3 }$, i.e., Ozone from $\displaystyle { O } _{ 2 }$. Ozone layer is very helpful for protecting the atmosphere.

The spark seen inside a switch is:

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. electrical discharge

  2. due to heating effect of current

  3. an indicator glowing

  4. a sudden fire

Show answer
Correct Option: A
Explanation:

When a switch is put off, between two conducting plates inside, an electrical discharge occurs. This phenomenon is similar to lightning between the clouds.

In one year lightning produces how much amount of usable nitrogen fertilizer?

physics some natural phenomena introduction to lightning lightning analysis of natural phenomena

  1. $250000 tons$

  2. $25000 tons$

  3. $250 tons$

  4. $25 tons$

Show answer
Correct Option: A
Explanation:

$Answer:-$ A

The processes of the nitrogen cycle transform nitrogen from one form to another. Atmospheric nitrogen must be processed, or fixed, in a usable form to be taken up by plants. Between $5\times 10^{12}$ and $10\times 10^{12}$ g per year are fixed by lightning strikes.