Lightning and Its Causes

Q.

Lightning is an electric spark on a huge scale.

1. False

2. True

Q. How does lightning occur in clouds?

Q. Which of the following statements is true with respect to lightning?

1. Electric discharge happens between two oppositely charged clouds.
2. Electric discharge happens between clouds and ground.
3. Electric discharge happens between two likely charged clouds.
4. The clouds acquire charge due to friction with air molecules.

Q.

Lightning is a/an ___ on a huge scale.

Q.

Choose the best option about lightning.

1. All of these.

2. It happens through the process of electric discharge.

3. Electric discharge can occur between two or more clouds, or between clouds and the earth.

4. In lightning, streaks of bright light and sound are produced when negative and positive charges meet.

Q. Clouds have large amounts of electrons stored in their parts.

1. upper
2. bottom
3. middle
4. corner

Q. During the construction of a building the lightning conductor was left hanging in the air by mistake. Would the lightning conductor be still effective? Explain.
[3 marks]
[Exemplar]
[Thunderstorm and Lightning]

Q. Match the following with the most suitable option:-

1. From cloud to earth
2. From earth to cloud
3. Ionization of air

Q.

Lightning is a/an ___ on a large scale.

1. Electro-magnetic effect

2. Heating effect

3. Electric spark

4. Magnetic effect

Q.

Discribe how lightning occurs?

Q.

When a ligtning occurs, why we see the lightning first and only after some time, thunderstorm can be heard? [2 MARKS]

Q. The weather department has predicted that a thunderstorm is likely to occur on a certain day. Suppose you have to go out on that day. Would you carry an umbrella? Explain. [3 MARKS]

Q. Which of the following is not likely to cause tsunami?

1. Earthquake
2. Volcanic eruption
3. Nuclear explosion
4. Lightning

Q. Which of the following are true regarding clouds during a thunderstorm?

1. Upper parts of the clouds are positively charged and lower parts of clouds are negatively charged.
2. Upper parts of the clouds are negatively charged and lower parts of clouds are positively charged.
3. Upper and lower parts of clouds are negatively charged.
4. Upper and lower parts of clouds are positively charged.

Q. The weather department has predicted that a thunderstorm is likely to occur on a certain day. Suppose you have to go out on that day. Would you carry an umbrella? Explain.

Q. Development of charges in clouds is an example of charging by induction.

1. False
2. True

Q.

Which of the following shows the characteristics of lightning?

1. It happens through the process of electric discharge between two or more clouds or between clouds and the earth.

2. Positive charges are accumulated at the bottom of the clouds.

3. Negative charges are accumulated on the ground.

4. Charge separation doesnot happen in the clouds.

Q. Which amongst the following necessarily happens during lightning?

1. Generation of electrical spark.
2. Sound of thunder clapping.
3. Formation of rainbow.
4. Heavy rainfall.

Q. A path for electric current is established when positive streamers and stepped leaders meet.

1. False
2. True

Q. In the cloud, the solid form of hailstones pull from the liquid droplets.

1. protons
2. heat
3. electrons

Q.

Which of the following shows the characteristics of lightning?

1. It happens through the process of electric discharge between two or more clouds or between clouds and the earth.

2. Charge separation doesnot happen in the clouds.
3. Positive charges are accumulated at the bottom of the clouds.

4. Negative charges are accumulated on the ground.

Q. Lightning occurs due to very high accumulation of charges in the cloud, despite air being a bad conductor of electricity.

1. True
2. False

Q.

Which of the following shows the characteristics of lightning?

1. It happens through the process of electric discharge between two or more clouds or between clouds and the earth.

2. Positive charges are accumulated at the bottom of the clouds.

3. Negative charges are accumulated on the ground.

4. Charge separation doesnot happen in the clouds.

Q. Lightning is due to flow of charge between clouds. True or false?