Physics - Waves & The Electromagnetic Spectrum

False (B)

Amplitude

<p>crest</p> Signup and view all the answers

<p>Wavelength = Distance between consecutive peaks or compressions Frequency = Number of waves passing a point in one second Amplitude = Maximum distance from rest position Period = Time taken for one wave to pass a point</p> Signup and view all the answers

<p>v = f × λ (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>30 Hz</p> Signup and view all the answers

<p>6.5 m/s</p> Signup and view all the answers

<p>Frequency from the vibration generator (D)</p> Signup and view all the answers

<p>Vibrations are at right angles (perpendicular) to the direction of energy transfer of the wave.</p> Signup and view all the answers

<p>Vibrations are parallel (in the same direction) to the direction of energy transfer</p> Signup and view all the answers

<p>up, down, long distances, bunch up, spread out, compressions, rarefactions, long distances</p> Signup and view all the answers

<p>closest together, densely packed</p> Signup and view all the answers

<p>Speed in a direction (A)</p> Signup and view all the answers

<p>Transverse waves (C)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>perpendicular</p> Signup and view all the answers

<p>Refraction (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>It decreases.</p> Signup and view all the answers

<p>absorbed</p> Signup and view all the answers

<p>Reflection = Bounces back off a material Transmission = Passes through a material Absorption = Transfers energy to a material Refraction = Bends as it passes into a different medium</p> Signup and view all the answers

<p>A = Angle of Incidence B = Angle of Refraction C = Normal Line D = Glass Block</p> Signup and view all the answers

<p>Start the stopwatch (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Distance of 100 meters</p> Signup and view all the answers

<p>banging</p> Signup and view all the answers

<p>Measure distance = Use a trundle wheel to determine the spacing. Start stopwatch = Begin timing when the first person bangs the blocks. Stop stopwatch = End timing when the sound is heard. Calculate average time = Compute the mean of several measurements.</p> Signup and view all the answers

<p>Set up the ripple tank apparatus (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Light source</p> Signup and view all the answers

<p>wave fronts</p> Signup and view all the answers

<p>Wooden bar = Measuring waves in solids Ripple tank = Measuring waves on water Hammer = Striking the metal rod Smartphone = Recording frequency</p> Signup and view all the answers

<p>Killing bacteria (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>3 x 10^8</p> Signup and view all the answers

<p>Infrared</p> Signup and view all the answers

<p>Radio Waves = Communication (radio, TV) X-rays = Medical usage Visible Light = Seeing Gamma rays = Cancer treatment</p> Signup and view all the answers

<p>It leads to blindness. (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Painful burns</p> Signup and view all the answers

<p>prism</p> Signup and view all the answers

<p>Infrared = Burns Ultraviolet = Sunburn (risk of cancer) X-rays = Cancer risk Microwaves = Painful burns</p> Signup and view all the answers

Vibrations move perpendicular to the direction of energy transfer. Imagine a rope moving up and down, while the wave travels horizontally.

Vibrations move parallel to the direction of energy transfer. Think of a spring moving back and forth, while the wave travels along the spring.

The highest point of a wave.

The lowest point of a wave.

Distance between two identical points on consecutive waves. For transverse waves, it's measured from peak to peak, for longitudinal waves, it's measured between compressions.

The maximum distance a point on a wave travels from its rest position.

The number of waves passing a point in one second. Measured in Hertz (Hz).

The time taken for one complete wave to pass a given point. Measured in seconds.

In a solid, the wavelength of a wave can be calculated by doubling the length of the solid, as the wave reflects from both ends.

The relationship between wave speed, frequency and wavelength. It states that: velocity of wave (v) = frequency (f) x wavelength (λ).

The bending of light as it passes from one medium to another, caused by a change in speed.

Light travels slower through water and glass compared to air, causing it to bend when entering or exiting these materials.

The change in direction of light rays as they pass from one medium to another, causing it to bend.

When light enters a glass block, its speed decreases, but its frequency remains the same. As a result, its wavelength becomes shorter.

A method used to calculate the speed of sound by measuring the time it takes for sound to travel a known distance.

The distance sound travels in a given time. It is measured in meters per second (m/s).

A method used to determine the speed of sound by timing how long it takes for sound to travel a known distance.

A device used to measure distances, commonly used in experiments involving the speed of sound.

The time it takes for one complete wave to pass a point. Measured in seconds. It's the reciprocal of frequency.

The number of sound waves passing a point in one second. Measured in Hertz (Hz).

The speed at which a wave propagates through a medium. It is determined by the properties of the medium and the type of wave.

A visual representation of waves, often used in experiments to observe and measure wave characteristics.

Quantities that only have a magnitude, like distance or speed.

Quantities that have both magnitude and direction, like velocity or force.

The speed at which all electromagnetic waves travel in a vacuum.

A continuous range of electromagnetic radiation, encompassing waves of different frequencies and wavelengths.

The full range of wavelengths of light that humans can see, appearing as a rainbow.

The ability of a prism to split white light into its component colors, like a rainbow.

Waves used for communication, such as radio and television.

Waves used for microwave ovens, satellite communication, and wifi.

Waves that produce heat and are used in thermal imaging and night vision.

Waves used in medical imaging and security markings.