Show:
Light
Color
Reflection
Sound
100
What is light?
Is a range of electromagnetic radiation
100
What are the primary colors of the visible spectrum?
Red, Green, Blue
100
What are opaque objects?
they are objects that don't let light pass throught
100
What is sound made of?
sound is made of wave vibrations
200
At what speed does the light travel in?
300,000 km/s
200
What are light filters used for?
to absorbs some of the wavelengths of light and let others pass through
200
What are transparent objects?
are objects that let light pass through
200
Does light change speed depending on the medium?give examples
yes, faster in water slower in air
300
What are the wavelengths of light included in the electromagnetic spectrum?
Radio, Microwave, Infrared,visible spectrum,ultraviolet,X-ray,gamma
300
what is the name of the process of absorbing some wavelengths of light and letting others pass through?
transmission
300
what are translucent objects?
let some light pass through depending on the wavelenght
300
how is sound created?
sound is created when objects vibrate and move molecules
400
Does light need a medium to travel through?
No
400
can light wavelengths combine to make a new color?
yes
400
what happens when light hits an opaque object?
a shadow is created
400
why does light travel faster dense mediums more than less dense mediums?
because the molecules are closer together so the vibrations pass through easily
500
What does white light made of?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
500
can dyes combine to make a new color? Explain?
No, because when dyes mix together even more colors get absorbed so when dyes get added together they make black because it absorbs all colors
500
what is the characteristics of a concave mirror?
bends towards the light
500
why can't sound travel through vacum?
because there is no medium fore the vibrations to pass through