What must an object do to produce sound?

After Liza plucks a guitar, what part begins moving to produce the musical note?

What happens to a drum's sound when its stretched top is held completely still?

Rico hears a classmate whisper. What form of energy reaches his ears?

What state of matter carries most of a classmate's voice across a classroom?

Study the particle diagrams. What letter marks the arrangement found in a wooden table?

An experiment compares air, steel, and water. How should they be ordered from fastest to slowest sound travel?

Ana hears an underwater bell while fully submerged in a pool. What state of matter carries the sound to her ears?

Pupils test whether ear position changes a knock's loudness. Which comparison is fair?

Which statement explains why a pupil can hear a tap with an ear pressed against a wooden table?

Why should pupils use gentle taps when listening with an ear against a table?

What happens to sound after the outer ear collects it?

After the ears send signals, what organ helps us understand a spoken message?

What is the name of part B in the ear diagram?

Which situation uses sound mainly as a warning?

Why can a school use a bell to announce class times to pupils in different rooms?

During a Sound Safari, Pia records a rooster crowing. What source group should she use?

Marco records a radio playing music at home. What source group should he use?

Listening to very loud sounds for a long time is safe for our hearing.

A soft whisper can carry a message from one person to another.