below are some ways to make things vibrate and produce sounds, except....

The ___________________ is how loud or soft a sound is.

Adam flicked a ruler gently, he heard soft sound. Then, Adam flicked it stronger and he heard louder sound. it means, small vibration produce _______ sounds while large vibration produce ________ sounds

human is the source of sound. When we speak and at the same time we touch our neck, we feel a _________

sound can travel through the three different states of matter: solid, liquid, gases. it travels best in which states of matter?

Adam is in his bedroom. He could hear the siren of ambulance on the street because of the following reasons, except...

the loud sound produce higher volume and sound level than a soft sound. we can measure the sound level of a sound using ....

Ziva measured the sound level of four different places. The quietest place was ______. the loudest place was_______.

Adam lives near the highway. What can be done on the highway to keep the traffic noise away?

the speed of a sound wave affect the ________ of sound

What is one way to change a pitch of a sound?

to produce sounds, Mary plucked the stings of the guitar. it produce low pitch sound because it has _______, ______, ______ string

we blow this pan flute to produce sounds. the shortest pipe produce _______

tighter drum skin produce high pitch while looser drum skin produce low skin. to proof that we, first, have to ________ the percussion instrument to produce the sound.

_______________ is made by vibrations

How high or low a sound is

How loud or soft the sound is

Sound waves travel slowest through a _____

Sound waves travel fastest through a ______

What is a tool that makes sounds louder called?

Our __________ vibrates when we talk and sing

Human's, __________ and thunder are examples of natural sources of sound

Unwanted sound is called ___________

Why can't we hear sound in space?

What happens to our hearing if we listen to loud noises all the time?

How can we protect our ears from hearing loss?

Sounds can be

Volume of a sound is

What do we use to measure the volume of sounds?

What sound source is the loudest?

Which of these instruments produce sound by shaking?

This instrument makes sound be __________

Which of these instrument make sound by pulling?

Which is not a way to produced sound?

Ali sometimes listens to a music to … himself

The sound of siren in a fire truck is used … us of emergencies or danger

Which one gives out sound?

Which sound is soft?

Which sound is loud?