This is my animation to demonstrate how the marshmallow cannon works.
This is my slideshow explaining the types of energy and what it is used for.
Sound waves
Sound waves are Longitudinal, these types of waves allow energy to travel along a line.
The wavelength is the distance between two crests/troughs.
The pitch is how high or low a sound is. To make a sound higher we increase the wavelength, and to make the sound lower we decrease the wavelength.
The Amplitude is the height of one crest/trough.
To increase the loudness of a sound, you increase the amplitude. To make the sound quieter, decrease the amplitude.
The Ear And Hearing
The ear uses an intricate process to allow you to hear.
Your ear has 3 main parts, the outer ear, middle ear and the inner ear.
The outer ears job is to gather sound waves and funnel them to the ear canal (path to the middle ear)
The middle ears job is to receive these sound waves and convert them into vibrations, then delivers them to the inner ear.
There are 3 little bones in our ear(s).
Once these sound waves travel to the inner ear, they change into nerve signals. (the cochlea changes sound waves into nerve signals) These signals travel to the brain, along the cochlear nerve.
The cochlear nerve, which is attached to the cochlea and sends sound information to the brain, therefore why we have the ability to hear.
Light Energy
- Light energy is displayed as transverse waves. The energy travels up and down.
- Light waves can be called electromagnetic waves. They have different names depending on the size of the wave.
- The biggest wave is a Radio Wave and the smallest wave is gamma rays
Radio waves are used for radios and tvs.
Microwaves are used in cooking, radar, phones, and other signals.
Infrared waves are used in heat transmitters including sun, fires and heaters.
Visible light waves give us the ability to see things and colors.
Ultraviolet (UV) waves are absorbed by the skin, can cause cancer and are used in the sun and fluorescent lights.
X-ray wave are used to view inside of bodies and objects and are used for medical needs.
Gamma rays are used in medicine for killing cancer cells.
- The smaller the wave length, the more energy there is. Smaller wave lengths are more dangerous because they hold a lot more energy than the bigger wavelengths.
Visible Light Waves (light we can see)
Wavelength: changes in wavelength caused different colours.
Amplitude: change in wave height changes the intensity of light.
High amplitude= bright
low amplitude= dim/dull
Colour Spectrum
Red | Orange | Yellow | Green | Blue | Indigo | Violet
When all of those colours bounce off (reflect) an object, we see WHITE
When all of the colours are absorbed (none reflect), we see BLACK
Our eyes sees the colour wavelengths that are reflected off an object and into the eye.
How Does Light Move?
Light moves in straight lines if something blocks the light there will be a shadow there is no light
Objects that block light are opaque
Circuits
A basic circuit is made up of wires, a power source (cell/battery) and usually a switch.
Series Circuits
A series circuit is like a basic circuit and it has only one pathway.
Parallel Circuits
A parallel circuit include components on 2 or more pathways.
What Is Voltage In A Series Circuit?
The voltage is the energy within a circuit. In a series circuit the voltage is shared between the components, with more components, it makes each bulb dimmer.
What Is Current In Series?
Current is the same everywhere
What Is Voltage In A Parallel Circuit?
In a parallel circuit the voltage is the same on each pathway, making the bulbs brighter than on a series circuit.
What Is Current In A Parallel Circuit?
Current is shared between the pathways