Sound Energy
Sound is created by objects...
vibrating
What type of enquiry looks at the relationship between 2 or more things?
Pattern seeking
Double Jeopardy!!!
When playing an instrument sound is transferred by _____ energy to _____ energy
mechanical/movement/kinetic - sound
High pitch sounds vibrate...
faster
Tightening the pegs on a guitar is how we _____ the strings.
tune
Sound travels in...
waves
Watching how something changes over time is an example of...
Observation over time
True or false: sound waves can bounce off objects and move around corners
True
Double Jeopardy!!!
low pitch sounds vibrate...
slower
Instruments with longer pipes will have a higher/lower pitch.
lower
Double Jeopardy!!!
Pitch is how fast something...
vibrates
Looking on the internet or reading books to learn more about something is doing...
research
Sound waves are made by _____ in molecules that spread out to the surrounding molecules.
vibrations
The speed of the sound waves is measured in...
frequency
How does our ear turn sound vibrations into something we can hear?
A small bone in the inner ear called the stapes.
We measure volume in...
decibels
A test performed several times with multiple variables...
fair testing
The movement of energy from one object to another is called...
energy transfer
True or false:
There are sounds that humans cannot hear
True
In a fair test about how sound travels through different objects what tool could we use to measure the decibels?
A sound level instrument/device/tool
Sound travels fastest through...and slowest through...
Hard objects / soft objects (solids / gasses)
DOUBLE JEOPARDY!!!
What are the 3 variables of a fair test and how are they different?
Control variables - unchanged factors
Independent variables - changed factors
Dependent variables - what is measured and changed by the independent variable
Using more ____ will increase the decibels or volume of sound.
force
What happens when something moves faster than the speed of sound?
A sonic boom
Double JEOPARDY!!!
We look at how the harder a drum is hit, a string is plucked, or a horn is blown into and notice that the more force we use the louder the sound. What type of enquiry is this?
Pattern seeking