Ch 11 Physical Science TEST

EM waves have a wide variety of frequencies. True or False?

• True

• False

What are three types of radio waves?

• AM, FM, radar

• AM, FM, Microwave

• AM, FM, Infrared

• AM, FM, Ultraviolet

What is a use for Gamma rays?

• Medical imaging

• Cooking food

• Cooling systems

• Lighting

Infrared waves are a type of:

• Visible light

• Ultraviolet radiation

• Microwave radiation

• Electromagnetic radiation

Damage to the Ozone layer is caused by CFCs (__________).

• Chlorofluorocarbons

• Carbonyl Fluoride

• Chlorine Fluoride

• Carbon Tetrachloride

What is a modulation?

• A type of signal processing

• A form of data encryption

• A method of data storage

• A type of network protocol

What are two uses of ultraviolet light?

• a. Sterilization and disinfection

• b. Tanning and vitamin D production

• c. Cooking and heating

• d. Communication and data transfer

Which property of a wave is typically altered by the medium through which it travels?

• Frequency

• Amplitude

• Wavelength

• All of the above

Frequency of EM waves is measured by the number of ___________ in one second.

• vibrations

• waves

• light beams

Visible light is _______________that is visible to the human eye.

• A type of sound wave

• A type of electromagnetic radiation

• A type of chemical reaction

• A type of gravitational force