T2 - Waves and Information
Physical Sciences
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PS4. Waves and Their Applications in Technologies for Information Transfer
PS4. Waves and Their Applications in Technologies for Information Transfer
4-4PS4-1. Develop a model of a simple mechanical wave (including sound) to communicate that waves (a) are regular patterns of motion along which energy travels and (b) can cause objects to move.Â
4-4PS4-1. Develop a model of a simple mechanical wave (including sound) to communicate that waves (a) are regular patterns of motion along which energy travels and (b) can cause objects to move.Â
4-4PS4-2. Develop a model to describe that light must reflect off an object and enter the eye for the object to be seen.
4-PS4-3. Develop and compare multiple ways to transfer information through encoding, sending, receiving, and decoding a pattern.Â
Properties of Waves
Properties of Waves
Amplitude - How much energy is in the wave.
A high amplitude wave is a high energy wave.
A low amplitude wave is a low energy wave.
Frequency - The number of waves that pass by each second; the number of cycles these waves complete in a second (known as a Hertz).
Frequency affects the energy of a wave.
Higher notes have higher frequencies.
Lower notes have lower frequencies.
Transverse Waves
and
Longitudinal Waves
Sound Waves
Sound Waves
A high amplitude sound wave will be loud.
A low amplitude sound wave will be quiet.
Light Waves
Light Waves
A high amplitude light will be bright.
A low amplitude light will be dim.
How do we see color?
How do we see color?
White light shines on an object, which contains all the colors of the rainbow. The object reflects that color it is into the eye. So an apple would absorb all color, except the red would reflect into our eye.
How is our eye a system?
How is our eye a system?
Our pupil is a black hole that can allow more or less light in.
Our lens then bends and focuses the image.
Our retina then sends this image as an electrical signals to the brain.
Topic 3 Study Guide
Topic 3 Pre-Assessment Answer KeyPage updated
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