Light
Sound
Waves
Every day uses
Random
100
Light is the _______ that we can _________?
Energy that we can see
100
Sound is a form of __________ that we can _______.
energy that we can hear
100
What do we call the top of a sound wave?
The crest
100
Give 2 examples of natural light
sun, fire, star, bugs, algae bloom...
100
What are the three sections of the human ear called
Outer, middle and inner ear
200
How does light travel?
In a straight line
200
How is any sound produced?
when an object vibrates
200
The number of wavelengths in a given time is called the ___________
frequency
200
Why do we see Mr. Veach's mug as a blue mug?
Because it absorbs every color except blue
200
Why do different guitar strings produce different sounds?
thickness
300
If an object allows some light to travel through it, we call it ______________.
Translucent
300
The loudness of a sound is measured in this unit.
Decible (dB)
300
The height of a sound wave tells us its ____________
Amplitude
300
If we mix all colors of paint, what color do we get?
brown
300
These are created when light is blocked.
Shadows
400
This is when light travels through a prism and breaks into the color spectrum.
Refraction
400
Where are our vocal cords located?
in the larynx
400
Describe the red sound wave.
High pitch, low amplitude
400
At which decibel (dB) level will our hearing start to be affected.
around 120 dB
400
How does a periscope of a submarine work?
Multiple angled mirrors at 45 degree angles
500
Light rays come together at this part of the back of the eye to form an image.
Retina
500
What do we call a sound with a higher frquency than humans can hear?
Ultrasonic
500
Draw on the board a wave with 50 Hz and a wave with 150 hz
500
What do we call professional singers that can sing at the highest pitch.
Sopranos
500
Why do many scientists consider the stars we see in the night sky "ghosts"?
Because the light from those stars have traveled so far and for such a long time that many of them have already died.