Which wave has a higher pitch - A or B?
A
When light is blocked by an opaque object, this makes a ___.
shadow
TRUE or FALSE - Sound is carried by air which moves from the source to our ears.
FALSE
Name the colours of the light spectrum in order (7 total).
red - orange - yellow - green - blue - indigo - violet (ROYGBIV)
Bigger vibrations give ___ sounds.
louder
If a green filter was used to shine light on a red book, what color would it appear?
black
What is this?
prism
Why does copper sulfate appear to be blue?
it reflects blue wavelength (and absorbs other colors)
When air particles are close together in a vibration, this is called a ___.
compression
All sounds come from sources that ___.
vibrate
What is the unit for measuring frequency of a wave?
hertz = Hz = vibration per second
Colored pieces of glass or plastic that absorb some wavelengths and transmit others are called __.
filters
How do we see the Moon?
light from Sun reflects off the Moon's surface
When light changes speed and bends, this is called ___.
refraction
Which wave represents a louder sound - A or B?
B
When white light is split into a spectrum, this is called __.
dispersion