Definitions
What is a vibration (in respect to both the object and the graph)?
Back and forth. One cycle of a peak and a valley.
What helps us see patterns in vibrations
A. Color
B. mass
C. Temperature
D. Graphs
What is D. Graphs.
Which statement best explains how sound is made
A. Sound is made when objects stop moving
B. Sound is made when objects vibrate
C. Sound is made when objects melt
D. Sound is made by light
What is B. Sound is made when objects vibrate.
What causes an object to start vibrating
A. Temperature
B. A force (push, pull, or strike)
C. Gravity only
D. Color
What is B. A force (push, pull, or strike).
Two sounds have the same pitch but different loudness what is different
A. Frequency
B. Amplitude
C. Temperature
D. Speed
What is A. Frequency.
What is pitch
How high or low the sound is.
What did the laser experiment show about sound?
What do taller peaks on a graph show
A. Lower loudness
B. Higher loudness
C. Lower frequency
D. No sound
What is B. Higher loudness.
What is the correct sequence for how sound is produced
A. Sound to vibration to force
B. Vibration to force to sound
C. Force to vibration to sound
D. Sound to force to vibration
What is C. Force to vibration to sound.
What stays the same when only loudness changes
A. Amplitude
B. Frequency
C. Force
D. Energy
What is B. Frequency.
How does changing the length of objects (strings, xylophone, tuning fork) affect the pitch?
What is the pitch is higher when the object is shorter.
What did the long and short stick model and what did each stick represent?
What is low and high pitch? Long stick was low pitch and short stick was high sound.
What happens when amplitude increases
A. Pitch increases
B. Sound gets louder
C. Frequency decreases
D. Sound stops
What is B. Sound gets louder.
A softer sound is made when
A. More force is used
B. The object is longer
C. The object vibrates faster
D. Less force is used
What is D. Less force is used.
How does changing the length of objects (strings, xylophone, tuning fork, sticks) affect the motion of objects? Hint: think about frequency.
What is the shorter the length, the greater the frequency, the faster the movement?
Frequency?
What is the number of waves (peak/valley cycles) occuring in a certain time.
What does a softer sound look like on a graph?
What is the amplitude is smaller.
What happens when frequency increases
A. Sound gets quieter
B. Pitch gets higher
C. Amplitude decreases
D. Sound stops
What is B. Pitch gets higher.
What do closely spaced peaks on a graph show
A. Lower pitch
B. Higher pitch
C. Lower loudness
D. No vibration
What is B. Higher pitch.
How do we know a louder sound has bigger vibrations?
It's amplitude on a graph is larger than a softer sound.
What is amplitude?
What is the wave’s height from starting point to its peak or valley.
What does the movement of the stick look like for one peak/valley cycle on the graph.
What is the stick moves forward and backward past the starting point one time (out and back) or 1 vibration.
What causes a louder sound
A. Less movement of the object
B. larger movements of the object
C. faster vibration
D. Slower vibration
What is B. larger movements of the object.
How does frequency affect the motion/vibration of objects?
What is as frequency increases so does the spead of the vibration.
Which graph would show a loud high-pitch sound
A. Small peaks and spread out waves
B. Small peaks and close waves
C. Large peaks and close waves
D. Large peaks and spread out waves
What is C. Large peaks and close waves.