Egg Drop Lab Report

The name of the lab is “Drops on a Penny.” I was expected to find the independant variable, dependant variable, write a hypothesis, and test the experiment. After testing the experiment multiple times, I needed to find the average amount of drops for each trial, graph them, and tell what kind of relationship it is. The last thing I needed to do was rewrite the details of the project and write a conclusion. The point of the experiment was to have the students get used to the idea of a lab, and get familiar with independent and dependent variables.

In Biology class we conducted a lab called “Bird Beaks”, in the lab we were separated into four groups of different bird beaks. Our goal was to see which type of beak was more successful, and if evolution occurred. I claim that Evolution did occur in the bird beak lab because spoons were able to survive and grow throughout everything that occurred and tweezys were able to grow and thrive after migration and everything that followed. My first piece of evidence and reasoning, is that spoons survived throughout the whole experiment after two natural selections, a migration of tweezys, a natural disaster, and a mutation. We started with seven spoons and ended with thirteen spoons.

The egg we experimented on went through many dramatic changes. In its original state, the circumference was 14 cm, and it was 66.8 grams in mass. However, it was much larger after it was put in the vinegar for 48 hours, the circumference was 17 cm, and the mass was 89.1 grams. This occurred because of osmosis. Since the vinegar had more water molecules than the egg, it was transferring the molecules to the egg to create equilibrium; therefore, the egg became larger.

To start off, Big Bertha was a very large siege gun, known as a howitzer, used by the Germans during World War I. This howitzer was the most powerful at the time and was used to demolish enemy fortresses. When firing the Big Bertha, it is very important to know how to use quadratics so that you can fire the shell accurately over long distances. The quadratic formula can be used to find the maximum height and distance the shell can be fired. First off, the quadratic equation in standard form needs to be used in order to plug in the variables such as the velocity and the original height the projectile came from.

An object on earth can not truly free-fall on earth because air resistance can amongst all objects no matter how miniscule and if there is friction pushing a body or an object the opposite direction than the downward acceleration due to gravity, then it can not be free, not under the control of another, falling. Therefore, the size and shape can also be factors affect how an object falls which on Earth, can not truly

ST Report In the experiment, the problem was the contaminants that were affecting the quality of the water samples. To fix this issue, three scientists had to determine the contaminants that were present in the samples. One sample was from the school sink and the second sample was from an unknown source. The scientists conducted many tests to figure out what pollutants were present in the water.

At that moment, I learned that I needed to add more bubble wraps, and tissue papers while building egg carrier. In addition, I wished I had a chance to try this experience by using different materials to protect the egg from breaking from the high place. When the egg was not survived when it was dropped, I realized that I needed to add more layers to the egg because layering things would offer the protection for the raw egg from the high place. My first idea was I planned to use the thick cardboard to make the box for the raw egg, however I changed my mind after discussing with my peer. The knowledge that I brought to this activity that supported my work on designing the protection for the egg was the more layering the more protection the egg may

Physics was observed during a DHS girls lacrosse game by Newton’s Laws and in free-fall. Newton’s Laws consist of 3 different laws, the law of inertia, F=ma, and action-reaction forces. Free-fall was observed in the game when the lacrosse ball falls, and only gravity acts upon it. All in all, Newton’s Laws and free-fall was portrayed during the lacrosse game.

The eggs were placed in the solutions, charting the change in weight after 15, 30 and 45 minutes; handling the eggs carefully each time and wiping off any excess water to avoid a misread by the scale. It is necessary to remove the egg and weigh individually each time to get the most accurate results. After the experiment was done, the eggs were placed back in their containers and the solution discarded of. It is imperative not to put the solution back in the containers.

Also, the pictures above show how the egg changed from being tight and solid to being flexible. The observations also say that the egg felt like a water balloon and was full of water inside. Overall, the egg greatly shrunk in size. Finally, when the egg was placed in corn syrup, it floated on the surface of the solution. This was because the egg floated in solutions hypertonic to its inside.

The purpose of this lab was to see the hydrogen bonding properties by doing multiple experiments that had exemplified such things. In the drops of water on a penny, I had gotten two pipettes and counted how many drops of that liquid, either being soap water or regular water, could fit into a penny. The second lab called “Water down a string” there was two beakers and string, which was dampened with water. Holding the string at a 45 degree angle, I had to pour water from one beaker at the top of the string and have the water be transported by the string to the other. The third lab was “How curved is your meniscus” where we had to compare the curve of water, meniscus, in a glass graduated cylinder to a plastic cylinder.

As the marble slides down the first drop it will lose much of its potential energy corresponding to the loss of height. The marble subsequently gains kinetic energy – kinetic energy is contingent to the mass and the velocity of an object. The marble speeds up as it loses height, consequently, their potential energy is transformed into kinetic energy. Newton’s Second Law states that an object’s net external force is equal to its mass times its acceleration; simply, the acceleration is proportional to the force applied and also the mass of the object.

CHAPTER: (1) Introduction 1.1 Problem Summary and Introduction: The goal for our group is to design a ping pong ball launcher. The launcher needs to be scheduled to launch one solo ping pong ball one at a time over a set obstacle and into a bucket of a chosen diameter. The determination is for the launcher to have the capability to launch five ping pong balls one at a time into the container within one minute, having none of the ping pong balls bounce out or miss the bucket. The launcher can be made out of any matter preferred and can launch the ping pong ball in any anticipated way, except by explosion.

CONCLUSION When you put an egg in vinegar, we see that the shell dissolves, but do you ever wonder why? An egg is made mostly out of calcium carbonate which reacts with an ingredient in vinegar, acetic acid. Acetic acid is about 4% of the vinegar and what breaks apart the solid calcium carbonate crystals. The bubbles we see, from the egg, is the carbonate that make carbon dioxide and the other calcium ions float free. This is the equation: CaCO3 (s) + 2 HC2H3O2 (aq)

INTRODUCTION Nature has provided the foetus with many protective mechanisms against many intra uterine hazards. One such protection is Amniotic fluid, the quantity varies , increasing with growing foetus, till term. Amniotic fluid volume is related to gestational age. It measures about 50 ml at 12 week of gestation about 400ml at 20 week of gestation and 1 litre at 36-38 week of gestation.