Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
|
In what three ways do waves change direction?
|
Reflection, Refraction, and Diffraction
|
|
|
What is Reflection?
|
When a wave hits a surface and cannot pass through the surface, so it bounces back.
|
|
|
What is Refraction?
|
The bending of waves due to a change in speed.
|
|
|
What causes Refraction?
|
When a wave enters a new medium at an angle.
|
|
|
What is Diffraction?
|
When a wave moves around a barrier or through an opening in a barrier it bends or spreads out.
|
|
|
What is wave Interference?
|
The interaction between two waves when they meet.
|
|
|
What are the two types of wave Interference?
|
Constructive and Destructive.
|
|
|
What is Constructive Interference?
|
When waves combine to form a wave with a larger amplitude than any of the waves before.
|
|
|
How does a Constructive Interference form?
|
When the crests overlap with crests and troughs overlap with troughs.
|
|
|
What is Destructive Interference?
|
When waves combine to form a wave with a lower amplitude than any of the waves before.
|
|
|
How does a Destructive Interference form?
|
When crests overlap with troughs and troughs overlap with crests.
|
|
|
What is a Standing Wave?
|
A wave that appears to stand in one place, even though it has two waves interfering as they pass through each other.
|
|
|
What is a Node?
|
A Node is a point in a Standing Wave where Destructive Interference produce an Amplitude of zero.
|
|
|
What is a Antinode?
|
A point in a Standing Wave where Constructive Interference produce a maximum Amplitude.
|
|
|
When do Standing Waves occur?
|
When an object vibrates at its natural frequency.
|
|
|
What is Resonance?
|
An increase in the Amplitude of a vibration that occurs when external vibrations match an objects natural frequency.
|
