Tag: physics

Quizzes (598) Questions (13441)

Questions Related to physics

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

What is meant by lightning?

  1. It is sudden electrostatic discharge during an electrical storm between electrically charged regions of cloud.

  2. It is sudden electrostatic discharge during an electrical storm between non-electrically charged regions of cloud.

  3. It is unsudden electrostatic discharge during an electrical storm between electrically charged regions of cloud.

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lightning occurs when there is a build up of the electrostatic charge in clouds. Regions within the cloud, one builds up a positive whereas other builds up a negative charge.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

Lightning is formed in unstable atmospheric zones where there is typically a lot of ____ and ______.

  1. Heat, moisture

  2. Heat, vapour

  3. Heat, gas

  4. Heat, lava
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lightening is an extremely high voltage, high current, transient electrical discharge. It is most commonly caused by charge separation in cumulonimbus clouds, or "thunderheads". These type of clouds typically are very dynamic with strong ascending and descending air currents. They are formed in unstable atmospheric zones where there is typically lot of heat and moisture.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

The layer of the earth's atmosphere which contains a high concentration of ions and free electrons and is able to reflect radio wave is known as

  1. Ionosphere

  2. Stratosphere

  3. Mesosphere

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

The layer of the earth's atmosphere which contains a high concentration of ions and free electrons and is able to reflect radio wave is known as the ionosphere.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

Fill in the blank.
Static electricity produced by charged particles in the atmosphere is known as_______.

  1. Atmospheric electricity

  2. Atmospheric charge

  3. Cloud electricity

  4. Wind electricity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Static electricity is an imbalance of electric charges within or on the surface of a material. The charge remains until it is able to move away by means of electric discharge. The static electricity produced by charged particles in the atmosphere is known as atmospheric electricity.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

Fill in the blank
________ is pattern of electrical charges in Earth's atmosphere.

  1. Electricity

  2. Space electricity

  3. Ground electricity

  4. Atmospheric electricity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Atmospheric electricity is the pattern of electrical  charges in Earth's atmosphere. Atmospheric electricity refers to electricity that exists in the atmosphere as a result of natural phenomenon. 

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

The Earth's surface, the ionosphere and the atmosphere is known as :

  1. global atmosphere electrical circuit

  2. local atmosphere electrical circuit

  3. electrical circuit

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The normal movement of electric charges among the Earth's surface, the various layers of atmosphere and especially the ionosphere, taken together are known as Global atmosphere electric circuit.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

Fill in the blank.
_______is most commonly caused by charge separation in cumulonimbus clouds, or thunderheads.

  1. Strom

  2. Lightning

  3. Cyclone

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

Lightening is an extremely high voltage, high current, transient electrical discharge. It is most commonly caused by charge separation in cumulonimbus clouds or thunderheads. 

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

The normal movement of electric charges among the Earth's surface, the various layers of the atmosphere, and especially the ionosphere, taken together, are known as :

  1. the global atmospheric electrical circuit

  2. a current conducting circuit

  3. charge cloud

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Atmospheric electricity is the pattern of electrical charges in the earth's atmosphere. The normal movement of electric charges among the earth's surface, the various layers of the atmosphere, and especially the ionosphere, taken together, are known as the global atmospheric electrical circuit.
Much of the reasoning required to explain these currents lies within the field of electrostatics, but also requires understanding of other disciplines within Earth science.