Grade 10

Rube Goldberg Project “Woof”

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The video: Woof

  1. First, we drop a marble into the slanted shelves. Then once the marble goes from shelf to shelf, it drops into the cup attached to a lever. the side of the cup then goes down and hits the bell, making a sound, while the other side raises and releases another marble. The second marble goes through a tube then hits dominoes which then hits the treat. The treat falls on the ground by the dog and now the lucky dog has a treat to munch on.
  2. The beginning, when the marble is placed and starts to move down, is potential to kinetic. When the moving marble falls into the cup it’s kinetic to potential. The cup hitting the bell is motion to sound. The marble released from the lever is potential (stored) to kinetic. Lastly, when the dominoes and the dog treat get hit by a moving object it’s potential to kinetic.

Making Babies – Gertrude

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Gertrude, our beautiful and unique baby,  has a round face, light tan skin, straight hair with a Widow’s peak, dark, bushy, and connected eyebrows, light blue eyes that are small, round, and far apart, long eyelashes, average sized mouth with thick lips and dimples, and freckles.

  1. How does the coin flip relate to the probability of inheriting genetic conditions?

It relates to the probability of inheriting genetic conditions because there’s a 50/50 chance of which trait or gene you can inherit.

  1. How does this simulation accurately represent or not represent real life?

This simulation does not represent real life because genes and traits are not decided by a coin flip.

  1. Did you identify any prejudices you might have about what traits you find “desirable”? Where do you think these prejudices come from?

Yes, there were some traits that were more desirable and others that weren’t. Traits that are shown in the media in a good way are often more desirable compared to others that are shown in a negative way.

Chemical Reactions Analogies

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Synthesis

A + B -> AB

Jelly + Fish -> Jellyfish

2Au + 3Cl2  -> 2AuCl3

 

Decomposition

AB -> A + B

Sunshine -> Sun + Shine

2Al2O3 -> 4Al + 2O3

 

Single Replacement

AB + C -> A + BC

Blue shirt and jeans + red shirt -> jeans and red shirt + blue shirt

Ti2O4 + 4Zn -> 2Ti + 4ZnO

 

Double Replacement

AB + CD -> BC + AD

Pink and orange girls + green and blue boys -> pink and blue couple + green and orange couple

Li3N + FeCl3 -> 3LiCl + FeN

Float Your Boat Experiment

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The “Soggy Marshmallows”

We used tinfoil, tape, marshmallows, and toothpicks to make our boat. When we placed the boat in the water the first time, it had a little bit of difficulty staying upright but we were able to place 10 pennies in the center of our boat before it sunk. The second time we placed it in the water, it still had some difficulty staying upright, even after a few tweaks, and we were able to place 12 pennies in the center before it collapsed again.

If we build an origami boat out of the tinfoil, then it will float because the weight is dispersed evenly.

In the end, our boat floated but we were only able to place 12 pennies on our boat. This data is a little in between supporting and refuting our hypothesis because, yes, the boat did float at first but it was a little was quite wobbly and after only 12 pennies it sank. A couple errors we made was that our boat was too small so it was not strong enough to support more than 12 pennies. Also, there were a few rips and holes in our tinfoil so that affected the result greatly. To improve for next time, we should stick to a simple design that wouldn’t rip the tinfoil, make sure that the boat is big and strong enough to support heavier objects, and make the surface we place the objects in bigger.