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# Rube Goldberg machine

“The Automatic Water Cup Filler 5000”

Krista, Angie and I worked hard to create a rube Goldberg machine that encompasses at least 3 simple machines, and 2 energy transfers. The machine starts when the steel ball is dropped through tube A on an inclined plane through the tube. This is a transfer of gravitational potential energy to mechanical energy by going down the slant. The steel ball then increases its gravitational potential energy at ramp B by going upward and the force that it has created jumps to a horizontal plane, then funneling into a cup at point C. The steel ball then passes through the cup and onto another inclined plane using more mechanical kinetic energy. The marble hits pendulum D which swings (using up gravitational energy) to knock down dominos at point E that uses sound and gravitational energy. The dominos fall on to lever F causing a marble on the other side to jump and roll down an inclined plane transferring to mechanical energy. At point G, the marble switches direction and continues to knock down a set of dominos at point H which progressively increase in size creating sound, gravitational and kinetic energy which then knock down a lever at point I. the lever causes the water to tip over at point J and pours a glass of water.

Simple machines:

Inclined plane

Lever

Pendulum

Wedge

Ramp

Energy transfers

gravitational potential energy – mechanical energy

mechanical kinetic energy – gravitational energy

Mechanical kinetic energy – sound energy and gravitational energy

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# Desmos Portrait 2018

How did you figure out the equations to use?

To start with, there was an original list of equations at the front that gave us the generalization of what they look like. I started with the head and the eyes playing with the shape until it looked decent. I mainly used the circle function (y²+x²=r²) to create the head and the eyes, and used the quadratic function for the hair to get a shape that went around the head. I used the square root function for the eye brows and absolute value for the arms and legs. I chose each function based on the shape it made, and how it best matches the body part.

Did you have any challenges, any aha moments?

Most of the challenges I faced was while I was adjusting the positions of each functions, and placing them in a correct position according to the body. I also had a challenge creating the body, and clothing for it. The aha moment I had was when I accidentally made the dress. I was trying to make a t-shirt but removed a “+” sign and ended up making a dress shape, deciding to keep it.

Did you get any help? Did you use any strategies?

I experimented with different functions and positioned them is a way that looked good with the body, I bounced ideas off of other people to get a good shape, and asked my peers what they did and I shared my ideas, so we all had a better understanding, and make our portraits to the best of our abilities

This assignment gave me a better understating on how each function and relation can be graphed, and how the slightest adjustment can change the whole placement. I learned how to change the functions position on the graph and manipulate the equation so the function turn out a certain way.

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# Surface Area of a Sphere OE2018

The formula for the Surface area of a sphere is 4 times pi radius squared.

For this activity, we started by cutting the orange in half and drawing as many circles from it’s hemisphere. After taking out the inside flesh of the orange, we pealed them into flat laying pieces. We filled in all the white spaces of each circle with the orange peals so there was no white spaces left, and the whole circle was covered. We discovered that there were four circles that it took up, so we concluded that its surface area is 4 * Pi * r^2 (Four times Pi radius squared.)

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ESTIMATING HOW MUCH WATER GARIBALDI LAKE CONTAINS

WHAT WOULD HAPPEN ID THE BARRIER BROKE

If the barrier did break, the majority of the water would drain out of the lake, but since there are uneven depth of the lake, some of the water would stay in the depth of the lake. From the force of the water, most of it would drain from the gravitational pull.

I used https://en.wikipedia.org/wiki/Garibaldi_Lake to do my research to get the surface area and the average depth of the lake. I used any past knowledge to conduct the rest of my research to find the estimate volume of Garibaldi lake.

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# DNA Model

DNA makes up all living things, and identify’s us for who we are. There are genetic codes in each strand of DNA that makes each being, individual. The DNA Strand has two sugar phosphate backbones that holds it together. Attached to the two backbones are amino nitrogen bases that contain the specific genetic information, like the color of someones eyes. There are four nitrogen bases in the DNA. The four are Adenine, Guanine, Cytosine, and Thymine. Adenine and Thymine always pair together being known as base pairs, and Cytosine and Guanine always base pairs as well. The DNA’s shape is twisted into a double helix. If you looked strait down the center of a DNA strand, it would appear hollow. A section of the DNA is called a gene, and the DNA is found in chromosomes. Chromosomes are contained our body making us human. As a human, we are all 99.9% alike with our DNA, but the smallest change in the DNA pattern can make us look completely different than our neighbor.

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# RAC 2018

Though out the week, I have worked on my random acts of caring towards other people to ease their lives. I chose to hold the door open for other people and smile, and say please and thank you to people and be sincere about it. I chose to do these two things so I could effect many people that I may not know, and preform each act of kindness multiple times. While I was going into school in the morning, I would always open the door for people behind me, and they would always smile and say thank you in return. I tried to do this as many times as I could throughout the week, and when someone would hold the door open for me, in return I would smile at them and say thank you. Whenever someone would do something kind for me, I would always sincerely say thank you, and appreciate all their efforts. The people who received these random acts of kindness always smiles and appreciated my doings. They appreciate all the little things that people around us do for each other. Seeing these reactions made me feel fulfilled about my simple acts of kindness and inspired me to go out of my way to do something nice for other people. I enjoy seeing the pleased reactions of other people for doing something simple. Doing these random acts of kindness I became more aware of how I can effect other people. I learned to respect everyone and help people out when possible. I hope to continue these random acts of kindness through out the year, and for years to come. If I can make someones day better by doing something simple, I would honorably try to do it more often and inspire others to do the same. Preforming random acts of caring can enhance my leadership skills by learning to understand others, and acting in the benefit of other people to make their lives more enjoyable. I see other people holding the door for others and being kind to everyone. One nice gesture can lead to another from someone else. I hope to continue doing random acts of caring throughout my life and putting smiles on other peoples faces.