Lightning

Q.

Explain the advantages and disadvantages of lightning.

Q.

Electric sparks due to lightning have the same phenomenon as that of the sparks observed when one takes off woollen clothes.

1. True

2. False

Q.

The jar of a gold leaf electroscope protects the gold leaves from_____________.

Q.

The lightning process is an example of electrostatics in nature. Give Reason.

Q.

The lower portion of clouds are negatively charged, what effect would it have on the earth?

Q. Thunderstorms are always accompanied by rainfall.

1. True
2. False

Q. Which of the following statements are true regarding clouds during a thunderstorm?
1. Upper parts of the clouds are positively charged.
2. Cloud is electrically neutral (no charge) everywhere.
3. Upper parts of clouds are negatively charged.
4. Lower parts of clouds are negatively charged.

1. Only 3 is correct

2. Both 1 and 4 are correct

3. Only 2 is correct

4. Only 1 is correct

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.

What is an electroscope? Explain the structure of gold leaf electroscope.

Q. What are the three characteristics of a thunderstorm?

Q.

Lightning is a/an ___ on a huge scale.

Identify an appropriate option.

1. Electro-magnetic effect

2. Magnetic effect

3. Electric spark

4. Heating effect

Q. During lightning, a huge amount of current flows. Which of the following happens alongside this phenomena?

1. There will be generation of charges

2. There will be loss of charges

3. A large amount of heat will be generated

4. None of the above

Q. Which of the following is not a characteristic of lightning?

1. The temperature of lightning is near about room temperature.

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.

What is an electroscope? Name its types.

Q. Match the following with the most suitable option.

1. Eye of the cyclone
2. Tornadoes
3. Thunderstorm

Q.

A glass rod acquires a positive charge on rubbing a silk cloth.

1. True
2. False

Q.

Thunderstorms are always accompanied by rainfall.

1. True

2. False

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. Charges are developed in the clouds because of:

1. Friction
2. Gravitation
3. Magnetism
4. Heat transfer

Q. Lightning assists formation of which gas?

1. Xenon
2. Ozone
3. Neon
4. Fluorine

Q.

What is an electroscope? Name two electroscopes

Q. During a lightning, which of the following occurs?

1. Electrons flow from the cloud to the ground.
2. Electrons flow from the ground to the cloud.
3. Protons flow from the cloud to the ground.
4. Protons flow from the ground to the cloud.

Q. Which of the following statements is incorrect with respect to lightning between clouds?

1. An electric discharge between oppositely charged clouds occur.
2. Air between the oppositely charged clouds ionizes.
3. Charges flow easily between the clouds since air is a good conductor of electricity.
4. When a charged cloud comes close to another cloud, it induces an opposite charge in the second cloud.

Q. Ozone layer protects us from:

1. Harmful gases in atmosphere
2. Contaminated water
3. Ultraviolet rays
4. Heat rays

Q. Match the following with the most suitable option.

1. Eye of the cyclone
2. Thunderstorm
3. Tornadoes

Q.

During lightning, thunder is produced due to

1. a sudden expansion of air due to intense heat

2. a collision among clouds

3. a sudden expansion of clouds due to intense heat

4. None of the above

Q. Which of the following is associated with lightning?

1. The temperature of the area surrounding the lightning will increase
2. A loud sound will be heard
3. There will be a flash of bright light
4. \N

Q. Thunderstorms are usually accompanied by _______.

1. rainfall
2. earthquake
3. bio hazards
4. tsunami

Q. Which of the following is associated with lightning?

1. The temperature of the area surrounding the lightning will increase.
2. A loud sound will be heard.
3. There will be a flash of bright light.
4. All of the above.