G4 First Review ST

G4 Lesson 5 (Review)

Scientific English

Multiple Choice

What is the source of sound in the given picture?

• Rooster

• Bell

• Baby

• Guitar

Open Ended

What is the source of sound in the given picture?

Open Ended

What is the source of sound in the given picture?

Multiple Choice

What is the source of sound in the given picture?

• Rooster

• Baby

• Bell

• Guitar

Open Ended

Which is the best state of matter through which sound travels?

Sounds louder than 85 dB can damage our ears.

Multiple Select

What is the instrument used to measure sound volume?

• ruler

• speedometer

• sound level meter

Open Ended

What is the unit used to measure sound volume?

Multiple Select

Sounds larger than _____________ can damage our ears.

• 30 dB

• 4 dB

• 15 dB

• 85 dB

Open Ended

List down two ways by which you can muffle sounds.