1. Sound is a kind of energy that is made when something vibrates. Musical instruments make sound by causing air or other materials like strings or membranes to vibrate. 2. Sounds can be described based on their loudness, which is how loud or soft they are, and their pitch, which is how high or low they are. Different instruments make different pitches and volumes of sound through vibrating. 3. All sounds are produced by vibrations - when the vibrations stop, so does the sound. Musical instruments cause vibrations in air, strings, reeds or other materials to produce sounds.

1. 1st grade
W.A.L.K.S.

2. How Sounds What sounds do you think
Are Made you can hear on this street?
Sound is a kind of
energy that you
hear. It is made
when something
vibrates.
To vibrate is
to move
quickly back
and forth.

3. • When you strum
guitar strings,
each string
vibrates.
• It makes a sound
that you can
hear.
How is
a sound
made?

4. Sounds Are Different
• Some sounds are… A sound’s
Whispering loudness
is how
loud or
soft it is.
• and some sounds are…
Air planes Can you think of other things that
make a soft sound and a loud sound?

5. A sound’s pitch
• Some sounds are…
A
sound’s
pitch is
how
Wind
high or Big
chimes low it is. bell
What other things make a high pitch and a low pitch?

6. Musical Instruments
• Musical instruments are objects people use to make music.
• Each kind of instrument causes air to vibrate to make sounds.
When you blow
When you blow
into aatrumpet, air
into trumpet, air
vibrates in its
vibrates in its
metal tubes.
metal tubes.
A saxophone has a wooden
part called a reed. The reed
vibrates, as does the air
inside the instrument.
A violin has
A violin has
strings cover that
strings cover that
vibrates.
vibrates.
A drum has a
tough cover that
vibrates.
All of them cause
How are all these instruments alike?
How are all these instruments alike? air to vibrate to
make sounds.

7. Put on your THINKING CAPS, because
it’s time to review!!
Sound is __________________.
o a kind of matter that keeps its shape.
o a kind of energy that you hear.
o All included.

8.  To vibrate is to…
o Move quickly back and forth.
o Move in circles very slow.
o Stay still.

9.  Loudness is __________.
o How loud or soft a sound is.
o How quiet a sound is.
o Not included.

10.  Which is the word for how high or
low a sound is?
o instrument
o loudness
o pitch
o vibrate
o Not included

11.  How are all sounds alike?
o Sounds only come from instruments.
o All sounds are made when things vibrate.
o All included.

12.  What are two ways sounds may be
different?
o They vibrate and move different.
o They have different shapes and colors.
o The loudness and pitch are different.

13.  Use the word vibrate to tell about
the picture.

14. What happens to a sound when the vibrations
stop?