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. The last lab we had done was “Pickle
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 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. This proves that the egg has a higher solute concentration then the vinegar. However, when the egg was placed in the corn syrup, its masses greatly decreased. The corn syrup has no water molecules, so to create equilibrium, the egg transferred its water molecules to the corn syrup,
Lab Report- Penny Drop Lab Abstract: This lab is called the Penny Drop Lab. In this lab, your goal is to find out how many drops of water you can fit on the top surface of a penny. You are trying to find the surface tension between two liquids. In this
Have you ever wondered what would happen if a penny was to fall off the top of the Empire State Building and hit someone on their head? It seems that this occurrence may be deadly. Infact , there are many who believes that at a fall from that high an altitude, 1,259 feet (381 meters) not including the antenna spire, a penny has the ability to cause a serious injury or even kill pedestrian down below. Well in order to cause such damages, this would be the case if the penny was in free fall. Yet this is not true because factors such as air resistance play a significant role in restricting the penny's acceleration. Therefore, due to air resistance, friction in the air, a falling penny on Earth can not truly free fall.
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.
Egg Drop Activity was one of my favorite experience that I was excited to explore in this class. while working on this activity, I had a fun time to cooperate with my classmate, Briana to try different ways to protect the egg. However, I was struggling to layering materials provided to protect the egg because I needed to hold the egg carefully. While exploring with this activity, I learned that from this experience that everybody had different techniques, and they also used diverse materials to protect the egg. Personally, I took a long time to think critically and creatively to make the protection for the egg. I also learned through play that I needed to add more bubble wraps and tissue papers probably to protect the egg. In addition, this activity also fostered my communication skills because I used languages to discuss and design the protection for the egg from breaking when it hit the ground. I learned from my peers that she was very patient to cover the egg by using the bubble wrap, tape, and tissue papers.
So, with the tallest starting ramp height, the plastic container had the the most kinetic energy. Due to having the greatest amount of kinetic energy, it had the most moving inertia, or momentum in the middle at the bottom.
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.
The goal of this group project was to design and build an original paper model marble roller coaster that must be able to transport a marble from start to finish without interruptions. The design had to be unique and thrilling but safe; and the marble must come to a complete stop at the end of the roller coaster. The track should have the following components: at least two hills, one loop and one turn, and if possible a jump.
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. The path of the shell is represented by y=-0.0196x²+1.37x.The variable “y” represents the height of the shell and “x” represents the
Based on the data and the recorded observations, my hypothesis is correct. When a solution is hypotonic, this causes the cell to swell, because there are more water molecules on the inside of the cell. If positive feedback continues, the cell will eventually burst. When a solution is hypertonic, this causes the cell to shrink, because there are more water molecules on the outside of the cell. Over time, the cell will start to function poorly (“Difference between Hypertonic, Hypotonic, Isotonic Solutions”). Therefore, the cell needs to maintain its internal environment through osmosis. In a hypotonic solution, osmosis allows water molecules to move from the inside of the cell to the outside, so as to keep the concentrations balanced. In a hypertonic
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:
To Determine the Time Taken for a muffin paper cup to reach the ground, while Changing the Height of each experiment
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.