Electromagnetic Spectrum

Why is there an "x" in X-Rays?

Absorption, reflection and refraction

Information about Visible light

All Electromagnetic Radiation is light. Variations in colors from red to violet, Reflection and Refraction, Only a tiny portion of the spectrum

Information about Cosmic Microwave Background Radiation

Arno Penzias and Robert Wilson discovered microwaves all over the sky in 1964 when trying to map the sky. This is significant since it provides support that when the universe was created, there was a bunch of energy given off in all directions (these waves are the leftover energy)

Information about Ultraviolet light

Can't see it, but know it's there, All can be harmful, UV-A and UV-B reach the surface of the Earth, UV-A causes sustains and little skin damage, UV-B causes sunburns and cancer, UV-C blokes by ozone layer and are very damaging to human cells

What are the uses of Gamma Rays?

Cancer treatment, Energy, Weapons

Information about Gamma Rays

Caused by nuclear decay, On Earth- found in lightning, nuclear bombs, nuclear power plants, In Space -Electromagnetic pulses (EMP), pulsar stars, gamma ray bursts (more energy in 10 seconds than our sun in the entire lifetime) supernovae

Information about the Electromagnetic Spectrum

Each type of radiation is determined by energy, frequency and wavelength. Radio waves have the longest wavelength, lowest frequency, least energy. Gamma Rays have the shortest wavelength, highest frequency, and the most energy. In between are microwaves, infrared radiation, visible light, ultraviolet light and X-rays.

Information about Electromagnetic Radiation

Energy that travels as photons and travels in transverse waves.

Which electromagnetic waves have the highest frequency and the shortest wavelengths?

Gamma Rays

Which of the following lists the electromagnetic waves in order of decreasing frequency?

Gamma rays, X-rays, UV waves, Visible light, Infrared Waves, Microwaves, Radiowaves

What are x-rays used for?

Imaging, treating cancer, and space exploration

The electromagnetic spectrum includes the complete range of electromagnetic waves placed in order of:

Increasing frequency

Which electromagnetic waves are used in devices such as heat lamps and TV remote controls?

Infrared rays

For waves in any medium, as the wavelength decreases, what happens to the frequency?

It increases

Information about Radio Waves

Longest wavelength, Range from water bottle size to planet size, Discovered in 1888 by Heinrich Rudolf Hertz, Given off by objects in space - a key space discovery, Transferred into sound waves when using your stereo

Which electromagnetic waves are used in ovens and cell phone communications?

Microwaves

How much of the electromagnetic spectrum is made up of visible light?

Only a small portion

Information about Photons

Packets of energy, properties of a particle, travel at the speech of light

Which waves are used in broadcasting?

Radio Waves

Which of the following has wavelengths longer than microwaves?

Radio waves

Which lists the electromagnetic waves in order of increasing frequency?

Radio waves, Microwaves, Infrared waves, Visible light, UV waves, X-rays, Gamma rays

Information about Infrared

Sensed as heat, makes our planet warm (Earth's Energy Budget), Absorbed by Earth, Some reflected back to space. Used in technologies like remote control, Heat lamps for chicks to hatch.

Information about Microwaves

Smaller end fo the radio wave spectrum (bug size waves), It's one category because of uses: Weather monitoring and prediction, Communications (cell phones and GPS), Monitoring changes in planetary features (ice caps, forest, etc), Speed guns used by police in baseball. Helps support the Big Bang Theory

Which electromagnetic waves help your body produce vitamin D?

Ultraviolet rays

What is Ultraviolet light used for?

Uses: Sterilization, Crime scene Investigations, UV-A in atmosphere causes body to produce Vitamin D

Which electromagnetic waves allow us to diagnose and treat cancer?

X-rays

Which electromagnetic waves help doctors detect broken bones inside your body?

X-rays

Which of has frequencies higher than ultraviolet rays?

X-rays and Gamma Rays