Sources of Sound
Animals, people, wind, thunder, etc.
Name a natural source of light.
The Sun, stars, some plants and animals, lightning, fire
What is volume?
How loud or quiet a sound is.
Describe how light travels from its source.
In a straight line.
Which part of a guitar vibrates to produce sound?
The strings
How do some plants and animals create their own light?
Bioluminescence
What is pitch?
How high or low a sound is
What term is used to explain when light bounces off a surface?
Reflection
Name a human-made source of sound other than speakers or headphones.
Whistle, car, instruments, machines etc.
Can fire be considered a source of light? Why or why not?
Yes, it is. It is a form of energy that helps us see.
What is duration?
How long a sound lasts for.
When does light bend as it moves from one material to another?
Refraction
How can sound travel through different materials?
Gas/Air - Slow
Liquid - Medium
Solids - Fast
How is electricity related to the production of light?
Electricity powers lightbulbs.
Does sound travel through solids? Provide an example.
Yes.
Cup and string.
Fork and string.
What is dispersion?
When regular light travels through materials and splits into many colours. Rainbow. Prism.
Explain how vibrations produce sound.
The vibrations cause waves that travel to our ears.
What effect does the Sun have on the Earth's environment?
It provides light during the day.
How can you differentiate between a quiet and a loud sound?
A quiet sound is harder to hear, a loud sound may hurt your ears.
How does light passing through water differ from passing through air?
The light may reflect or refract when traveling through water.