and objects such as launch adapter and lens covers, which are mission related. The other 44% is originating from 140 on-orbit fragmentations. These events have been the main source that has generated a population of objects larger than 1cm on the order of 70000 to 150000. Efforts to provide a definitive assessment of this problem have been directed toward analyzing the hazard level presented by particular debris populations and predicting how this hazard level will change with time. Much less
Factors Affecting the Resistance of a Wire The aim of this experiment is to investigate one factor that affect the resistance of a wire. I will do this by performing an experiment. First I will need to identify the factors that effect resistance. There are a few factors that affect the resistance, it is determined by the properties an object has. This is know as resistivity. The factors I can investigate are : Ÿ Temperature Ÿ Length Ÿ Cross-sectional area/width Ÿ Material
Investigating How Different Lengths of Wire Affect the Resistance in a Circuit Hypothesis: I predict that; the longer the wire, the more resistance there will be. So if the length of the wire were to double, so would the resistance. The reason for my prediction is: The flow of electrons is called a current, the electrons are constantly hitting atoms, which causes resistance. If the same amount of current is passed through a longer piece of wire, there will be more collisions, hence more
Osmosis in Potatoes Aim: My aim in this experiment is to find out if osmosis occurs in a potato, and how it will affect the potato in different molar solutions of sucrose and water. Using the same size potato. Theory: Osmosis is the passage of water molecules from a weaker solution into a stronger solution, through a partially permeable membrane. The tiny holes in the membrane of the potatoes will allow the water molecules to pass through in and out of the solution and the potato
The Open Box Investigation The aim of this investigation is to find the largest volume within for an open box with any size square cut out I will be increasing the square cut out by 1cm until I reach a point where the volume decreases. At this point I will decrease the square cut out by 0.1cm until I reach the maximum volume. This will be done on several different grids until I see a pattern which I will then use to create a formula. I will record my results in a table for the different
Six Week Basketball Training Program The aim of this project is to improve my ability in basketball over a six-week period. I will be doing this by trying to not only practice skills involved in the game but to work at my stamina levels. My main goal is to improve my shooting as I feel this is my weakest quality in the game but I will be training in all aspects of the game, e.g. Dribbling and Defence. I will improve certain components of fitness in my chosen skills and improve my
Relationship Between the Resistance and the Length of a Wire Aim: To find the relationship between the resistance of the wire and the length of the wire Background Factors: i. Temperature : If the wire is heated up the atoms in the wire will start to vibrate because of their increase in energy. This causes more collisions between the electrons and the atoms as the atoms are moving into the path of
Investigating How to Get the Maximum Volume From a Cuboid Introduction I am doing an investigation into how get the maximum volume from a cuboid using a square with smaller squares cut out from each corner to then fold it up into a cuboid. Cut out the red squares and fold inwards on the blue lines to get a cuboid. To get the maximum volume from the cuboid you need to work out the sizes of the squares you want to cut out from each corner. The formula I used to work out the volume
Investigating the Effect of Drop Height on the Depth of Sand Aim: To investigate the depth of the sand depending on the height at which the ball is dropped from. Variables: Independent variable chosen: The height at which the ball is dropped Dependent variable chosen: The depth of the sand after removing the fallen ball from it. Constant variables and how they will be controlled: Variable How we will keep it constant Amount of sand We leave the sand in the bucket and
Investigating the Size of Craters in Sand when a Marble is Dropped into the Sand from Different Heights * Metal container * Sand * Marble * 1 metre rulers * 30cm ruler Method * First of all I collected all the equipment I needed. * Next I put the tub of sand next to the wall and leaned the ruler up against the wall resting on the sand. * I then took the marble and dropped it into the sand from different heights. * After each drop I took my 15cm ruler, measured
The Open Box Problem An open box is to be made from a sheet of card. Identical squares are cut off the four corners of the card, as shown below. [IMAGE] The card is then folded along the dotted lines to make the box. The main aim is to determine the size of the square cut which makes the volume of the box as large as possible for any given rectangular sheet of card, but first I am going to experiment with a square to make it easier for me to investigate rectangles. I am going
another and due to the differences between them, are all diverse. It is this point that led the Savanna Diversity students to conduct a study on the Biodiversity of a Savanna biome in the Vredefort Dome, South Africa’s seventh World Heritage Site. In order to carry out a study on the diversity of a savanna biome we needed first to have an understanding on what makes up a savanna and the distribution, both world wide and locally, of such a biome. The definition of a savanna according to Collins (2001)
The Relationship Between Length, Width and Resistance of a Wire Aim: To investigate how the length and width of a wire affects the resistance of the wire. What is resistance? Electricity is conducted through a conductor, in this case wire, by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor, i.e. gold has less resistance. For example, gold has more free electrons than iron and, as a result, it is a better
electrons also increases, wh... ... middle of paper ... ...a thermocouple and then connect it to a circuit and record the resistance. Material: To do this, I would set up the experiment the same as with the thickness investigation. In order to investigate how material changes the amount of resistance, I would firstly find different materials e.g copper wire, nichrome wire etc and conduct a preliminary test to see if the different materials had enough difference of values to show the
amplitude got louder as well, thus refuting the hypothesis. These results made sense because what was created inside the PVC pipes was a standing still sound wave, or a resonance wave. These kinds of waves have certain locations on its wavelength in order for the change in sound to be heard, which it usually half a wavelength. With this, the tuning fork is 83.3Hz and a usual wavelength is about 300Hz, 300/83.3 = 3.6 meters, which is about 4 meters (half = 2 meters). So for the change in sound to be
Wood frog (Lithobates sylvaticus) A very unique species is the wood frog. These frogs are well adapted to cold conditions by accepting the freezing of their blood and other tissues in their body and still can survive, but only if less than 65% of their body water does not freeze up. Generally being various shades of brown, the wood frog can reach lengths up to 7 centimeters, with females being larger than the males, with light or pale colored belly. Adults are generally variations of brown and normally
It’s a quiet day on the fourth floor of the Research Pavilion building in UCF’s Research Park- or so it seems. At second glance, the halls are abuzz with professors and students dressed alike in lab coats speaking a language unknown to most commoners: the language of science. In Room 422, Qun Huo, the nanotechnology program coordinator, sits at her desk in front of a large window displaying a nearly setting sun. Her desk is organized and the large bookshelf in front of her consists of
Bivariate Relationships Problem: I am going to investigate if there is a relationship between the (explanatory variable) sampling height (cm) and the (response variable) height of the crown of the saplings (cm) that is measured from the base of the crown. Based from the data from study plots of either 1.5 hectares or 2.25 hectares in the Waitutu forest. Trees were randomly selected within the plots and measured during the summer. The plots were selected to be a representative sample of the vegetation
The Terminal Velocity of a Paper Helicopter Introduction. Terminal velocity is the resulting occurance when acceleration and resistance forces are equal. As an example, a freefalling parachutist before the parachute opens reaches terminal velocity at about 120mph, but when the parachute is opened, terminal velocity is reached at 15mph, which is a safe speed to hit the ground at. This experiment will be no different, as I will be examining the terminal velocity of a freefalling paper helicopter
Resistance of a Wire Experiment Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance? Electricity is conducted through a conductor, in this case wire, by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor, i.e. it has less resistance. For example, gold has more free electrons than iron and, as a result, it is a better conductor. The free electrons