Concept Note: Sources of Sound (Man-made and Natural)

What starts every sound we hear?

• Strong light from the sun

• Vibration of an object

• Heat from the air

• Movement of a shadow

Which is a man-made source of sound?

• Thunder during a storm

• Waves hitting the shore

• Cellphone ringing loudly

• Birds chirping at dawn

Which is a natural source of sound?

• Alarm clock beeping fast

• Leaves rustling in wind

• Car horn honking loudly

• Computer speakers playing

Why are man-made sounds helpful in daily life?

• They make the sky brighter

• They let plants grow taller

• They help remind or communicate

• They stop rivers from flowing

Choose the best reason natural sounds matter to us.

• They tell us about weather

• They charge our phones

• They fix broken machines

• They make metals stronger

A drum makes sound when its skin vibrates. What action will start this vibration?

• Painting the drumhead slowly

• Touching the drum gently

• Hitting the drum with sticks

• Cooling the drum with ice

You hear a loud honk and rustling leaves at the same time. Which statement best classifies these sounds?

• Both are natural sounds

• Both are man-made sounds

• Honk is natural, leaves man-made

• Honk is man-made, leaves natural