Grade 4 Review for Final Test

A sound with _____ or more can damage our ears.

• 100 dB

• 20 dB

• 160 dB

• 110 dB

Sound is measure using _________.

• force meter

• thermometer

• sound-level meter

What unit do we use to measure sound?

• kilogram

• centimeters

• decibels

• newton

What is a circuit?

• It is a path that stops the electricity from flowing through.

• It is an object that does not allow electricity to flow through.

• It is a path that allows electricity to flow through.

When we are near the sound, it makes a _______sound.

• loud sound

• normal sound

• soft sound

When we are far from the sound, it makes a _______sound.

• loud sound

• normal sound

• soft sound

Which of these makes a soft/quiet sounds?

• 
• 
• 

Which of these makes a loud sound?

• 
• 
• 

Is siren a loud or a soft sound?

• soft sound

• loud sound

Is it a loud or a soft sound?

• soft sound

• loud sound