Like light, is sound able to travel through a vacuum?
Unlike light sound is not bake to travel through a vacuum because there are no molecules to vibrate.
300
How is a shadow created?
A shadow is created when light hits an opaque.
300
When are hearing aides used? What do they do?
when hearing has been damaged, hearing aides can be used. They detect sounds and amplify them into the ear canal.
400
What body parts do outers ear consist of? What do they do?
-Auricle: Collects sound waves.
-Ear Canal: Passage way for waves to ear drum.
400
List the primary colors of light inorder from highest wavelength to lowest wavelength.
Red, Orange, Yellow, Green, Blue, Indigo, Violet.
400
Explain what pitch, frequency, amplification and resonance mean.
Pitch: The high or low produced by wavelength frequency.
Frequency: A measure of how many wavelengths pass by in a given time.
Amplification: The height of a sound waves' amplitude (volume).
Resonance: When objects vibrate more at special frequencies.
400
What are the mirrors types? What happens when light hits them?
- Plane Mirror: Reflects light.
- Concave: Bends towards the light.
- Convex Mirror: Bends away from the light.
400
What is a hearing range? What is the human hearing range?
A hearing range is the range of frequencies that a living thing is able to detect.
-Human Hearing Range: 20-20,000Hz.
500
Describe the steps of how we hear sounds.
1. Sound waves are collected by the ear lobe or pinna.
2. The waves travel along the ear canal.
3. The waves make the ear drum vibrate.
4. The small bones amplify the vibrations.
5. The cochlea turns these into electrical signals.
6. The auditory nerve takes the signals to the brain.
500
What do light filters do? What is this process called?
Light filters are used to absord some wavelengths of light and let others pass through. This process is called transmission.
500
Name the parts of the wave and what they represent.
-Amplitude: Height of wave.
-Wavelength: Distance between crests or troughs.
-Crest: Highest point of wave.
-Trough: Lowest point of wave.
500
Explain how prisms are able to separate light? What is this process called?
Prisms are able to separate light by slowing down the light, which changes its direction. This process is called refraction.
500
What are Ocsilloscopes? What do they do?
Ocsilloscopes are machines used to measure sound waves and visualize them on a screen. They show amplitude, wavelength, and frequency.