The EM Spectrum
These are the waves on the electromagnetic spectrum that humans can see
What is visible light?
Electromagnetic waves are composed of this type of wave, which moves perpendicular to the direction of propagation.
What is a transverse wave?
The speed of light is approximately this many kilometers per second (\(3 \times 10^5 \text{ km/s}\)).
What is 300,000 km/s?
These types of waves are used for cellular phone communication and radar.
What are microwaves (or radio waves)?
These electromagnetic waves have the longest wavelength and lowest frequency.
What are Radio Waves?
This type of EM wave has the shortest wavelength and highest frequency.
What are gamma rays?
The distance from one crest of a wave to the next
What is wavelength?
This color of visible light has the shortest wavelength.
What is violet?
This type of mirror can produce a magnified image, often used in makeup.
What is a concave mirror?
This part of the spectrum has the shortest wavelength and carries the most energy.
What are Gamma Rays?
This type of radiation is slightly dangerous, produced by warm objects, and used in thermal imaging.
What is infrared?
This occurs when light bounces off a surface, such as in a mirror
What is reflection?
A prism creates a rainbow from white light because it is doing this to the light.
What is refracting?
This part of the atmosphere causes radio waves to bounce, allowing signals to travel over distances.
What is the ionosphere?
These waves are found between radio waves and infrared on the spectrum.
What are Microwaves?
This part of the spectrum has the longest wavelength and lowest frequency.
What are radio waves?
This is the bending of waves as they travel through different mediums
What is refraction?
When light energy is soaked into an object, it is known as this.
What is absorption?
It takes roughly this amount of time for visible light to travel from the Sun to Earth.
What is 8.3 minutes?
This is the correct order of the seven main types of EM waves from longest to shortest wavelength.
What are radio, microwave, infrared, visible light, ultraviolet, X-rays, and gamma rays?
These rays are used to sterilize equipment and can cause sunburns
What is Ultraviolet (UV)?
The number of waves that pass a given point in a certain amount of time
What is frequency?
Objects that do not allow light to pass through them are called this.
What is opaque?
These organisms, including insects and some birds, can see into the ultraviolet range.
What are bees?
These are the seven colors of Visible Light in order of increasing energy (shortest to longest frequency).
What are red, orange, yellow, green, blue, indigo, and violet?