grade 7 quiz

What is the primary cause of charge separation within a cloud, leading to lightning?

• Strong winds

• Collisions and rubbing of particles

• High temperatures

• Magnetic fields

When lightning occurs between two clouds, which types of charges are attracted to each other?

• Positive charges in both clouds

• Negative charges in both clouds

• Negative charges from one cloud and positive charges from the other

• Neutral particles from both clouds

During a cloud-to-ground lightning strike, what happens to the charges on the ground directly below a negatively charged cloud?

• Negative charges accumulate on the ground.

• Positive charges accumulate on the ground.

• The ground remains electrically neutral.

• All charges are absorbed by the ground.

What is the main function of a lightning conductor on a building?

• To repel lightning strikes away from the building.

• To absorb the energy of a lightning strike and convert it into heat.

• To attract a lightning strike and safely channel the electric charges into the ground.

• To illuminate the building during a thunderstorm.