Echo

What is an echo?

• It is a sound

• It is a reflection of a sound

• It is an oscillation

• Frequency maybe?

Where is the perfect spot for echo to get produced

• A room filled with furniture

• An empty and big room

• The Dining hall

• Kitchen

Chloe and her father have gone fishing. Her father sends out a sonar.Chloe is puzzled about this.

Why does Chloe's father do this?

• just like that

• To attract fish

• To repel sharks and call fish

• So that the sound bounces off the fishes and they know where it is.

What is the minimum distance to hear the echo?

• 10 metres

• 20 km

• 10 km

• 17 metres

How do you stop an echoing sound ?

• Clap your hands

• Cover your ears

• Put in furniture

• Just live with it

Why can't we hear echo in a small room?

• Because the room is too small

• Because the sound is too loud

• Because of too much of stuff in the room

• Because an echo needs space to get produced