Physics Final Exam: Electromagnetic

How Microwave radiation heats food quickly.

Microwave ovens are so quick and efficient because they channel heat energy directly to the molecules inside the food.

Technology

Microwaves, and Microwave ovens

Define Microwave Radiation

Mircowave Radiation is electromagnetic radiation with the frequency between 300 MHz and 300 GHz. A wavelength ranging from 0.1 cm to 100 cm.

How it helps people see at night.

Night vision goggles using image enhancement technology collect all available light. The color green is mostly used because it is the dry color humans can distinguish.

Where Microwave radiation is found on the EMS

Microwave falls between infrared radiation and radio waves.

Common source of exposure

Microwave ovens

Define X-radiation

A form of electromagnetic radiation that can penetrate through your body.

Describe technology

A smooth, wide open space to test cars, remote control with aluminum foil step on radio controlled cars.

Ultraviolet and tanning beds.

A tanning bed produces an artificial tan by imitating the suns UV radiation.

Define Radio wave radiation.

A type of electromagnetic radiation that effects the DNA in the cells.

Main risk

Damage to DNA, Result in cancer, result in disorder.

Found on the EMS and what are the wavelengths and frequency's

Gamma is the highest on the EMS scale, smallest kind of waves on the spectrum found in the universe, has the highest frequency. Has the most energy.

Health risk of Gamma Radiation.

Gamma is the most penetrative type of energy currently known. It can cause burns, cancer and death. (Hiroshima)

How to prevent Ultraviolet exposure.

Hats, Sunscreen, sunglasses.

Gamma used to treat cancer.

High- energy radiation, objective is to kill tumors and shrink cancerous cells, but it also kills good cells too.

Where is found on the EMS,compared to the others.

Infrared is located in between visible light and microwave. Infrared has lower energy compared to gamma rays, but higher energy than radio.

Describe Ultraviolet radiation

Is a Electromagnetic radiation with a wavelength of 10nm to 400nm

Define infrared Radiation

Is part of the electromagnetic spectrum and it has longer wavelengths than those of visible light.

Define visible light

It is part of the electromagnetic spectrum. Visible light is defined as the wavelengths that are interpreted by human eyes.

Common sources of exposure

Large does of broadcast antennas, Radar station.

Health Risk

Low levels of microwave radiation are not known to produce health risk. They do cause burns.

Health Risk for infrared radiation

Lung exposure can cause lens cornea damage, and skin burns.

How can X-ray radiation produce and internal image.

Medical X-ray are used to generate images of tissue and structure from inside the body. An image will be formed that represents the :shadows" formed by the objects inside the body.

Common source of exposure

Medical radiation, airport security, food and radiation therapy.

Visible light and photovoltaic cells

Photo voltaic cells produce electricity by converting the solar energy to a DC current. This occurs by using photo voltaic action of the cell without using any of its part.

Define Gamma Radiation

Produced by the hottest and most energetic objects. AKA Nuclear explosions.

Describe where radio waves are found the EMS compared to the other six forms of radiation.

Radio waves have longer frequency but shorter waves.

Health risk for Ultraviolet.

Skin disease, eye disease, aging skin, bad immune system.

Health risk of X-radiation.

Slightly increase of cancer.

How to protect yourself from Gamma Radiation.

Stay 10 ft away, place and absorber between the rays and you.

Common source of exposure for infrared radiation.

Steel mills, textiles, glass, and paper.

Common source of exposure for ultraviolet.

Sun light, tanning beds, photo therapy and black light lamps.

Common source

The sun, bright flashlights, and LED lights.

How to prevent X-ray exposure.

Time, Distance, and shielding.

Health risk for visible light.

To much light can damage your retinas, high powered lasers can cause burns.

Location on EMS

Visible light is in between infrared and ultraviolet.

Where is it found on the EMS

X-rays are on the higher end of the electromagnetic spectrum. They have high frequency and energy.

Where it is found on the EMS

in between visible light and x-ray.

Prevent exposure

wear protective gear.