Nose Cone Lab

1. The clear, keratinized portion of a fingernail is known as the nail _PLATE_. It has a root, body, and free edge.

For this study, footballs filled with different gases, with air being the control group and helium, nitrogen, argon, and carbon dioxide being the independent variables, were shot 15 times from a Snap Attack Machine. The hang times in seconds of the footballs were recorded and placed on a spreadsheet in Microsoft Excel. There were 2 experiments. The first experiment had the footballs filled to 6 PSI and the second experiment had the footballs filled to 9 PSI. The change in PSI was suggested by a graduate student, helping the researcher, because the lower PSI in the first experiment caused the Snap Machine to shoot the footballs and produce results all over the place with no precision (see Table 1 and Graph 1). The second experiment provided more precise results because the Snap Machine could shoot the footballs better (see Table 2 and Graph 2). The first experiment results were nullified for the error. The means, standard deviations, and standard errors of

The moment an Alka-Seltzer tablet hits water, it begins to fizz. These tablets are over-the-counter antacids and pain relief medications that contain aspirin, sodium bicarbonate, and citric acid. The fizzing is a result of a reaction occurring where carbon dioxide (in the form of bubbles), water, and sodium acetate is formed. The fizzing and carbon dioxide bubbles are a result of the sodium bicarbonate splitting and reacting with the citric acid. In this experiment we are determining the percent by mass of sodium bicarbonate (NaHCO3) in Alka-Seltzer tablets and exploring the relationship between amounts of reactants and products.

In this gummy bear lab, the goal was to see the movement of water in cells depending on the concentration of solutes in the environment. The control group was the type of water used. The research question for this experiment was, how does concentration of solute in the environment affect water movement in cells? The hypothesis thought of for this question was that the salt water would enlarge the gummy bear the most. The distilled water would not enlarge the gummy bear as much as the salt water.

The purpose of this lab is to gain knowledge and understanding of the scientific principle of RER, using indirect calorimetry to measure caloric expenditure, including the caloric equivalent and to understand the concepts behind estimating oxygen consumption and caloric expenditure from heart rate, including the limitations. In addition the purpose was to learn skills of how to measure and graph the linear relationship between heart rate and VO2 and then determine the regression equation line and to estimate the caloric expenditure from VO2, heart rate, and caloric equivalent values.

Cutting through the mink to study its anatomy helps the group to realize that they are similar to human. The most important tools used in the lab are scissor, probe, pins, tweezer, and scapula. The most tool being used is scapula which is used to cut up the mink and skin it. Safety materials are required in the lab in order to avoid accident. Since the minks contain cancerous chemicals on them, the classes are required to wear safety goggles, apron, and gloves. The class started the dissection from May 18th to May 27th in third period of Anatomy class.

Why are spindle fibers important for mitosis? (5 points) Chromosomes use spindle fibers as pathways to daughter cells during mitosis.

Introduction: The purpose of this lab was to learn the proper techniques of roasting, smelting, and volumetric analysis to determine an unknown sample of copper mineral.

1. In the lab activity the rate of the reaction would slow down because it is harder to find unbroken toothpicks since the amount is decreasing because there are less substrates present. 2. By starting off with 400 times more than 50 toothpicks (increased) from the start, than the reaction rate can keep on getting faster and faster because the enzyme would have more to react in the process.

3.     What are the advantages and disadvantages of an experimental design in an educational study?

Elise Velau 10/13/14 Period 4 Eggspearament Goal or Problem Investigated: I want to see what happens to an egg if it is soaked in vinegar for a couple of days. I hope that the raw egg does not make a mess if the shell dissolves. I hope that I will be able to experiment with a raw egg, and a hard boiled egg.

The scientific question of the project was, Does the size of a tire affect the bike’s speed? The hypothesis was , If the smaller tires were used, then the bike would go faster. The important procedures were: Make sure all equipment is ready. Test the standard wheel of 1 rotation or pedal a second to ride to the finish line. Test smaller and bigger wheels. Record data and have at least 3 trials. Record the data on a piece of paper and compare results to your hypothesis. The Independent variable is the size of the wheel on the bike. The Dependent variable is the standard wheel or tire on the bike. The control group was the bike’s speed and the standard wheel or tire. The Experimental group is the other tires or wheels being tested on the bike. The control variables were the rate of pedaling , the same bike model was used, and the same distance for

Notice the list of deliverables toward the end of the information. Part 1 includes deliverables 1-4.

Online store of Julius-K9 presents a wide array of dog training equipment and accessories. Discover the best range of products designed to serve the diverse purposes of dog training. Our team of experts understands the various needs during the training sessions and for that reason, products crafted with keeping them in mind. You will find gear essentials for dogs of different kinds including the security dog, working dog or pet dog.

How does drag affects the arrow? The total amount of drag on an arrow is a factor of the shape of the arrow, the speed of the arrow, and the density of the air. As the speed of an arrow increases, so does the drag on the arrow. The faster the arrow the higher the force trying to slow it down.