How Fast?

The video explores the concept of speed, starting with the basics of calculating speed using distance and time. It explains the speed of sound, including how it varies with temperature and how supersonic speeds work. The video then compares the speed of light to sound, illustrating why lightning is seen before thunder is heard. Everyday speeds, such as walking, running, and wind, are discussed, highlighting their differences from the speeds of sound and light. The video concludes by summarizing the various speeds covered.

What is the speed of sound in air when the temperature is 0 degrees Celsius?

• 350 meters per second

• 330 meters per second

• 360 meters per second

• 300 meters per second

What is the term used for speeds faster than the speed of sound?

• Hypersonic

• Subsonic

• Supersonic

• Transonic

Why do we see lightning before we hear thunder?

• Light travels faster than sound

• Sound is absorbed by clouds

• Thunder travels faster than lightning

• Lightning is brighter than thunder

How fast does a gentle breeze move compared to running speed?

• Slower than running

• Same as running

• Faster than running

• Twice the running speed

What was the highest wind speed recorded in a tornado?

• 100 meters per second

• 120 meters per second

• 135 meters per second

• 150 meters per second