Pinhole Camera Project
Within this project we had to use the Electromagnetic Spectrum (see def. below) and apply it to making our own cameras out of shoe boxes. (not that we could use the whole spectrum considering only one part of it is actually visible with a naked eye) The type of camera would be a pinhole camera. During this project, we also converted our school shed into a dark room so we could develop our photographs. Another thing we learned about was light and waves. As the project came to a conclusion, we had an exhibition at Queen Bee's (a building in North Park) during which we sang Mass vs. Weight, a little song describing the differences between mass and weight, and presented a demonstration. (Below you will find images/documentations of the final presentations, along with a description of the Electromagnetic spectrum.)
ELECTROMAGNETIC Spectrum
![Picture](/uploads/1/6/5/9/16591066/447430576.gif)
Definition: the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light. Or, to clarify, a range of waves or rays that make up senses around us. Some examples of said spectrum would be; sounds waves, light waves, ect. The only part of the The Electromagnetic Spectrum that we can see would be 7000 to 4000. (To enlarge photograph click on the picture)
Mass vs. Weight (Sang to the MELODY of sweet caroline)
Verse 1
Mass vs. Weight, two measures for an object
They're not the same let's all see why
To determine the mass, we use a balance to do it, we use a scale to measure weight
Mass, measure in grams or in kilograms. It's all about how much stuff the object has
Chorus
Grams and kilograms, ba-ba-ba!
They're the units we use for mass (for mass, for mass, for mass)
Newtons are for weight, ba-ba,ba!
Weight's the measure of gravity's pull on an object
Verse 2
So you can see, mass and weight aren't the same thing
Weight is a measure of gravity's pull
In contrast to weight, mass tells us how much matter, how much matter the object has
Mass, measured in grams or in kilograms. It's all about how much stuff the object has
Chorus
Grams and kilograms, ba-ba-ba!
They're the units we use for mass (for mass, for mass, for mass)
Newtons are for weight, ba-ba-ba!
Weight's the measure of gravity's pull on an object
Bridge
Mass and weight, mass and weight they are NOT the same
Mass and weight, mass and weight they are NOT the same
Mass and weight they are not the, NOT the same!
Chorus
Grams and kilograms, ba-ba-ba!
They're the units we use for mass (for mass, for mass, for mass)
Newtons are for weight, ba-ba-ba!
Weight's the measure of gravity's pull on an object, YEAH!
Waves and Slinkies
![](http://www.weebly.com/weebly/images/file_icons/rtf.png)
waves_poster.docx | |
File Size: | 23 kb |
File Type: | docx |
how does it work
As the slinky curves and compresses into different shapes, it shows what the waves all around our heads are currently doing. For example, when it shifts into an S shape, it is copying the Transverse waves like the ones people hear on the radio. When it begins to compress and rarefact, it is showing the Longitudinal waves, such as the sounds we hear. The faster we wiggle the slinky, the more frequency we create. With transverse waves, the more frequency there is, the less amplitude the wave would get. The disturbance sends compressed waves, longitudinal in this case, to the ears so that we can actually hear that high ringing sound that it creates. For example, when forks are hit on the table, that is the disturbance.
1.Compression: When the wave and/or slinky is squished together for a certain length
2. Rarefaction: When the wave and/or slinky is being pulled apart for a certain length before it becomes compressed
3. Amplitude: The height that a transverse wave rises or falls; crest is the height, trough is the fall
4. Frequency: The amount of energy a wave creates
5. Disturbance: The thing that creates vibrations as it travels through a medium
6. Transverse: Waves that travel perpendicular (or at a right angle) to the medium and that have amplitude or create troughs and crests
7. Longitudinal: waves that travel along the medium using compression and rarefaction
2. Rarefaction: When the wave and/or slinky is being pulled apart for a certain length before it becomes compressed
3. Amplitude: The height that a transverse wave rises or falls; crest is the height, trough is the fall
4. Frequency: The amount of energy a wave creates
5. Disturbance: The thing that creates vibrations as it travels through a medium
6. Transverse: Waves that travel perpendicular (or at a right angle) to the medium and that have amplitude or create troughs and crests
7. Longitudinal: waves that travel along the medium using compression and rarefaction