Physics Chapter 15 Flashcards

Waves are produced by something that vibrates, and they carry energy from one place to another.

Sound and water waves move through a medium; without matter, they cannot transfer energy.

Electromagnetic waves are made by vibrating electric charges.

<p>Electromagnetic waves travel by transferring energy between vibrating electric and magnetic fields.</p> Signup and view all the answers

<p>A vibrating electric charge creates an electromagnetic wave that travels outward in all directions from the charge.</p> Signup and view all the answers

<p>Vibrating fields exert forces on particles in the object and cause them to move and gain energy.</p> Signup and view all the answers

<p>A wave that electromagnetic waves carry called radiant energy.</p> Signup and view all the answers

<p>Electromagnetic waves travel at a speed of 300,000 km/s in vacuum space.</p> Signup and view all the answers

<p>Electromagnetic waves can behave as a photon.</p> Signup and view all the answers

<p>Energy depends on the frequency of the waves; increasing frequency will increase the energy of the photons.</p> Signup and view all the answers

<p>Radio waves are low frequency electromagnetic waves with wavelengths longer than 1 mm.</p> Signup and view all the answers

<p>Radio waves have the lowest frequency and longest wavelength of all electromagnetic waves.</p> Signup and view all the answers

<p>Microwaves have shorter wavelengths than radio waves and have greater frequency as well.</p> Signup and view all the answers

<p>Infrared waves are the electromagnetic waves associated with heat.</p> Signup and view all the answers

<p>Infrared waves are a type of electromagnetic wave with wavelengths between 1 mm and 750 billionths of a meter.</p> Signup and view all the answers

<p>Visible light is that range of electromagnetic waves that you can detect with your eyes.</p> Signup and view all the answers

<p>Visible light has wavelengths of 750 billionths to 400 billionths of a meter.</p> Signup and view all the answers

<p>UV waves are electromagnetic waves with wavelengths from about 400 billionths to 10 billionths of a meter.</p> Signup and view all the answers

<p>Electromagnetic waves travel by vibration; they don't require matter to travel.</p> Signup and view all the answers

<p>An electromagnetic wave is a transverse wave.</p> Signup and view all the answers

<p>By vibrating electric charges.</p> Signup and view all the answers

<p>Electrons in your skin begin to vibrate.</p> Signup and view all the answers

<p>Light travels at 300,000 km/s in the vacuum of space.</p> Signup and view all the answers

<p>A Photon; energy depends on the frequency of the waves.</p> Signup and view all the answers

<p>UV light can help detect fingerprints but can also cause sunburn and skin damage.</p> Signup and view all the answers

<p>Because the electric and magnetic fields are at right angles to the direction the wave travels.</p> Signup and view all the answers

<p>Amplitude is a measure of the energy in a wave.</p> Signup and view all the answers

<p>In compressional waves, matter moves in the same direction as the wave travels.</p> Signup and view all the answers

<p>Crest is the highest point of the wave.</p> Signup and view all the answers

<p>Frequency is how many wavelengths pass a fixed point each second.</p> Signup and view all the answers

<p>Trough is the lowest point of a wave.</p> Signup and view all the answers

<p>A wave is a repeating disturbance that transfers energy through matter or space.</p> Signup and view all the answers

<p>Matter.</p> Signup and view all the answers

<p>By adding energy to the medium or matter.</p> Signup and view all the answers

<p>A mechanical wave is a wave that requires matter.</p> Signup and view all the answers

<p>Compressional (longitudinal).</p> Signup and view all the answers

<p>Sound travels through a medium by creating a ripple effect.</p> Signup and view all the answers

<p>Wind energy.</p> Signup and view all the answers

<p>Seismic waves are waves caused by an earthquake.</p> Signup and view all the answers

<p>Wavelength shortens.</p> Signup and view all the answers

<p>In a transverse wave, the medium moves at right angles to the direction the waves travel.</p> Signup and view all the answers

<p>In compressional waves, matter vibrates in the same direction as the waves travel.</p> Signup and view all the answers