Mechanical Waves And Sound Flashcards
What three properties of light are different between red light and blue light?
Wavelength frequency energy
How was the speed of light determined? What is one of the issues of measuring the speed of light?
Speed of light moves so fast, mirrors make it easier to record time
What two things do you need to know about a wave in order to calculate it’s frequency?
Wavelength and speed
What two things does an electromagnetic wave behave like?
A wave and a particle
Isaac Newton hypothesized that light was a stream or particles because
It travels in a straight line and casts a shadow
How do photons travel from a light source?
In all directions
Why does light get dimmer as it moves away from its source?
The photons are spread out over a larger area
Infrared rays are between what two other parts of the electromagnetic spectrum?
Radar and visible light
The full range of frequencies in the electromagnetic spectrum is the
Electromagnetic spectrum
The waves with the longest wavelengths in the electromagnetic spectrum are the
Radio waves
Visible light lies between what two areas of the electromagnetic spectrum?
Infrared waves and ultraviolet waves
X ray photographs show softer tissue as what color?
Dark highly exposed areas because X-rays are blocked by the sense material
What does a translucent material do?
Scatters some, but not all of the light
Order the light transmitting properties of materials from all light to no light. Opaque, translucent, and transparent
Transparent, translucent, opaque
What is the term when light changes direction when it passes from one medium to another?
Refraction
How do polarized sunglasses work?
It blocks the light that vibrates in certain planes
What did newtons prism experiment discover?
Light is made up of different colors
Name of the process that creates a rainbow from raindrops
Dispersion
What determines the color of an object?
What it is made of and the color of the light that hits it
Blue light and yellow light combine to form white light because they are
Complementary colors of light
The primary colors of light are
Red blue and green
An incandescent bulb produces light when the electrons flow through the
Filament
Why do neon lights glow red
Electron configuration
