The Physics of Lightning

What causes thunderstorms?

• Wind currents

• Magnetic fields

• Solar flares

• Small electrically charged particles

What causes the rumbling thunder that we hear?

• Rain hitting the ground

• Air rapidly expanding and vibrating

• Clouds colliding

• Wind blowing through trees

How much power does each lightning bolt carry?

• 20 billion watts

• 1 billion watts

• 5 billion watts

• 10 billion watts

What factors determine the color of lightning?

• Altitude of the clouds

• Wind speed and direction

• Time of day

• Atmospheric humidity, temperature, and air pollution levels

What do houses and buildings use to protect against lightning?

• Insulated roofs

• Special paint

• Conducting rods

• Thick walls