Properties of Waves Quiz

The velocity of a wave is calculated as _______/time

Electromagnetic waves transfer energy in a _______ direction

All types of electromagnetic waves travel at the same velocity through a _______ or air

Going from long to short wavelength, the groups in the electromagnetic spectrum are radio, microwave, infrared, visible light, ultraviolet, X-rays, and _______ rays

Our eyes only detect _______ light

Red light has the _______ wavelength in the visible spectrum

Gamma rays originate from changes in the _______ of an atom

______ travels in waves.

A wave is a way of transferring ______ or energy.

Energy moves perpendicular to matter in ______ waves.

Longitudinal waves show areas of ______ and rarefaction.

The unit of frequency is ______ (Hz).

Humans can hear a range of 20-20000 ______.

The amplitude of the wave is the maximum distance of a point on the wave from its ______ position.

Translucent objects allow ___ to pass through

Opaque objects do not transmit ___

A lens forms an image by ___ light

The distance from the lens to the principal focus is called the ___

Ray diagrams are used to show the formation of images by convex and ___ lenses

Colour filters work by absorbing certain ___ and transmitting other wavelengths

The observed red-shift provides evidence that space itself (the universe) is ___

An infrared thermometer can be used to measure emission of ______ radiation

White, silver, shiny surfaces are poor absorbers/ emitters of ______ radiation as they reflect all visible light wavelengths

Radiators are often painted white to release ______ radiation steadily

Dark, matte surfaces are good emitters of ______ radiation

A Leslie cube can be used to investigate emission of ______ radiation

All bodies (objects), no matter what temperature, emit and absorb ______ radiation

A perfect black body is a theoretical object that absorbs all of the radiation incident on it and does not reflect or transmit any ______

Stars are considered to be black bodies because they are good emitters (and therefore absorbers) of most wavelengths in the EM ______

The temperature of the Earth depends on many factors including: the rates of absorption and emission of ______, reflection of radiation into space, and the concentration of greenhouse gases in its atmosphere