Sound and Light Flashcards

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Questions and Answers

What is reflection?

When light bends like it does when passing through water

When light bounces like it does off of a mirror (correct)

An object that allows some light to pass through

When light is stopped and doesn't reflect

What is refraction?

The energy of motion

An area where air is pushed together in a sound wave

All colors of light together

When light bends like it does when passing through water (correct)

What happens to light in absorption?

When light is stopped and doesn't reflect.

What does it mean if an object is opaque?

Reflects or absorbs all light, no light can pass through Signup and view all the answers

What is a prism?

A glass triangle that bends or refracts light and separates its colors. Signup and view all the answers

What is the visible spectrum?

All the colors that make up visible light - ROYGBIV. Signup and view all the answers

What is loudness?

A measure of the sound energy reaching your ear also called volume. Signup and view all the answers

What is pitch?

A measure of how high or low a sound is. Signup and view all the answers

What happens during a sonic boom?

A shock wave is produced by an object traveling faster than the speed of sound. Signup and view all the answers

What creates sound?

When something vibrates. Signup and view all the answers

Sound waves travel __________ through air than through water.

more slowly Signup and view all the answers

What can light energy do?

Grow plants, power cars, give things color, power satellites in space, etc. Signup and view all the answers

How does light behave?

Travels in straight lines, makes shadows, can be reflected, can be refracted, can be absorbed. Signup and view all the answers

What is white light?

All colors of light together. Signup and view all the answers

What is the color of an object determined by?

The color of light that the object reflects. Signup and view all the answers

How is a rainbow formed?

Sunlight enters a raindrop, is refracted, reflected from the back, and exits through the front. Signup and view all the answers

What happens as sound waves move away from their source?

They get weaker Signup and view all the answers

What is kinetic energy?

The energy of motion Signup and view all the answers

What can happen to both light and sound waves?

They can be absorbed, reflected, or transmitted by objects. Signup and view all the answers

What defines amplitude in a sound wave?

Shown by height on a wave diagram, it measures how loud or soft a sound is. Signup and view all the answers

What is the speed of sound?

All of the above Signup and view all the answers

A wavelength is the distance from the __________ in one wave to the next highest point.

highest point Signup and view all the answers

People can't hear sound at all wavelengths.

True Signup and view all the answers

Light waves travel more quickly than sound waves.

True Signup and view all the answers

Study Notes

Light Concepts

Reflection: Light bounces off surfaces, exemplified by mirrors.
Refraction: Light bends when passing through materials like water.
Absorption: Light is captured and does not bounce back.
Opaque Objects: Reflect or absorb all light; no light passes through.
Translucent Objects: Allow partial passage of light, creating blurred images.
Prism: A glass structure that refracts light to separate it into colors.
Visible Spectrum: Comprises all colors visible to the human eye; represented by ROYGBIV (Red, Orange, Yellow, Green, Blue, Indigo, Violet).
White Light: A combination of all colors of light reflected together.
An object’s Color: Determined by the specific wavelength of light it reflects.

Sound Concepts

Compression: Regions in a sound wave where air particles are pushed closely together.
Echo: Occurs when sound waves reflect off surfaces and return.
Loudness: Also referred to as volume; quantifies sound energy received by the ear.
Pitch: Refers to the perceived frequency; higher frequency corresponds to higher pitch.
Sonic Boom: A burst of sound created when an object exceeds the speed of sound.
Sound Waves: Created by vibrations; characterized by high and low-pressure areas.
Speed of Sound: Approximately 770 mph (343 m/s or 1125 ft/s); travels about one mile in five seconds.

Sound Properties

Amplitude: Indicates the height of sound waves; corresponds to volume (loud or soft).
Frequency: Number of sound waves per second; higher frequency results in higher pitches.
The Outer Ear: Functions to funnel sound waves into the ear canal.
Nerve Cells in the Inner Ear: Collect sound information and transmit it to the brain.
Ear Canal: A passage that directs sound waves to the eardrum.
Sound Wave Behavior: Waves weaken as they disperse from their source; travel slower in air compared to water.

Comparisons and Interactions

Material Influence: Sound and light waves can be absorbed, reflected, or transmitted depending on the material properties.
Virtual Wavelength: The distance between consecutive peaks in a wave; significant in understanding sound and light properties.
Distance Effects: Sound waves fade in intensity as they move away from their source; light can travel vast distances with minimal loss.

General Concepts

Vibrations: The foundation of sound production, representing a repeated back-and-forth motion.
Kinetic Energy: The energy possessed by moving objects; relevant in understanding wave motion.
Amplification: The process of increasing sound intensity, making it louder.
Light Energy Functions: Essential for plant growth, energy for cars, coloration, and powering satellites.
Rainbow Formation: Involves refraction, reflection, and dispersion of sunlight through raindrops.

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Description

Explore key terms related to sound and light through these flashcards. This quiz covers concepts such as reflection, refraction, absorption, opaque, and translucent. Perfect for reinforcing your understanding of light behavior in different media.