Understanding Speeds: From Sound to Light

The video explores the concept of speed, explaining how it is calculated and comparing the speeds of sound, light, and everyday activities. It discusses supersonic speeds and sonic booms, and provides context for understanding these speeds in kilometers per hour. The video also covers the impact of temperature on sound speed and compares the speed of light to sound, using thunder and lightning as examples. Finally, it examines the speeds of walking, running, cycling, and wind, highlighting the differences between them.

What is the basic formula used to calculate speed?

• Speed = Time / Distance

• Speed = Distance + Time

• Speed = Distance / Time

• Speed = Distance x Time

How does temperature affect the speed of sound?

• Sound travels slower in warmer air

• Sound travels faster in warmer air

• Temperature has no effect on sound speed

• Sound travels at the same speed regardless of temperature

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

• Subsonic

• Hypersonic

• Supersonic

• Transonic

Why do we see lightning before we hear thunder?

• Light travels faster than sound

• Sound travels faster than light

• Thunder occurs after lightning

• They travel at the same speed

Approximately how fast does light travel?

• 3 million meters per second

• 300 million meters per second

• 330 meters per second

• 300,000 meters per second

How many seconds does it take for sound to travel one kilometer?

• 2 seconds

• 1 second

• 4 seconds

• 3 seconds

Which of the following is generally faster: running or cycling?

• Cycling

• Running

• It depends on the person

• They are the same

What is the speed range of a gentle breeze?

• 3.5 to 5.5 meters per second

• 5.5 to 7.5 meters per second

• 7.5 to 9.5 meters per second

• 1.5 to 2.5 meters per second

What was the highest wind speed ever recorded in a tornado?

• 150 meters per second

• 100 meters per second

• 120 meters per second

• 135 meters per second

What can tornadoes do due to their high wind speeds?

• Calm the weather

• Create earthquakes

• Cause rain

• Uproot trees and destroy buildings