Distribution of Plankton in Yellowwood Lake Introduction: Over the duration of two lab periods we collected an assemblage of plankton and tested whether plankters are actively moving or are passive in bodies of fresh water. While working in paddleboats on the Yellowwood Lake in Brown County, IN, we assembled a collection of samples of protists, rotifers, and arthropods. Before starting our study we produced a null hypothesis: plankters are passive. This null hypothesis predicts, where water is mixing uniformly, plankton distribution will be uniform (Clara Cotton, personal communication, October 6, 2016).
Modeling predation Yeling Partner: Tobi Environmental science Mrs. Eckman Oct. 25 2015 Introduction: Objective: Through this lab we will know how do changes in environment factors affect the predation habits of the blue heron. Hypothesis: Environment factors will affect the predation habits of blue heron. Where has more fish, they will go where. Materials: 21*27 cm^2 grid paper 400 uncooked rice grains
Lab 7 Report: Molecular Methods - Group 5 Abstract. This lab report outlines the procedures and findings of an RT-qPCR experiment conducted on extracted DNA from E. coli K-12 samples. The objective was to assess microbial dynamics and investigate the efficacy of molecular methods in detecting specific pathogens. The experiment involved DNA extraction using silica columns and various buffers, followed by qPCR setup and analysis. Very precise procedures and protocols for biosafety measures and quality control, including technical replicates and dilutions, were used throughout the experiment.
If it were pH neutral then it would be Sodium Chloride and if it were basic then it would be Sodium Carbonate. However, if the colour of the flame test was light lilac then the chemical is Potassium Chloride and if the colour of the flame did not change at all then the compound is
Two types of compounds are acids and bases. An acid is chemically defined as a molecule that donates H+ ions. Acids have three main characteristics: they taste sour, they conduct electricity when added to water (though they are covalent), and they turn blue litmus paper red. Bases are chemically defined as molecules that accept H- ions. Bases taste bitter, are slippery to the touch when dissolved in water, and turn red litmus paper blue.
Equation 3.1 can be simplified to the following equation γ(t,m;m_m )= e^(α-βm)/〖(t+c)〗^p (3.2) Where a_0=a+bm_m , α=a_0 ln10 and β=b ln10 are defined. |γ_m (t,m;m_m )|=|∂γ(t,m;m_m )/∂m|=e^α/〖(t+c)〗^p βe^(-βm) (3.3) Where |γ_m (t,m;m_m )| represents the absolute value of the partial derivative of γ(t,m;m_m ), and it is the instantaneous daily rate density of aftershocks of magnitude m at time t following a main-shock of magnitude m_m. e^α/〖(t+c)〗^p denotes the mean instantaneous daily rate of aftershocks at time t following the main-shock of magnitude m_m. βe^(-βm) is the exponential probability density function of aftershock magnitudes.
Ph Test The Ph test is a way to determine whether a solution is an acid or a base. Acids contain high concentrations of Hydrogen ions. Bases contain high concentrations of Hydrogen Oxide ions.
When the pH is less than 7 it is considered acidic and if it is higher than 7, it is considered basic. If it’s exactly 7 then it is called neutral. Lemon juice and vinegar are both very acidic, while bleach and soapy water are very basic. Opposite to the typical assumption, the pH scale can range from less than 0 to greater than 14 for very strong acids and bases. Brine shrimp are native to the Great Salt Lake.
The website we went to is below. http://chemistry.about.com/od/acidsbase1/a/red-cabbage-ph-indicator.htm. The cabbage juice is supposed to change color when another liquid is added.
I noticed that all 3 different substances provided had a different density. When I put about a ½ inch of the solution “H” it was very thick almost like a jelly consistency. In addition we added another unknown solution “M” into the same test tube that contained the substance “H” we observed that the substance slinked to the bottom of substance “H” and it started creating its own layer. The two layers of solution both did not mix together and was separated by some type of density suspension. Furthermore we introduced another unknown substance “G” This was the densest liquid sinking to the bottom.
Observations of the rock in hand sample have a slight variation to those seen in thin section. In hand sample five main minerals were visible with trace amounts of a sixth seen in very small amounts. Mineralogy in hand sample is k-feldspar, plagioclase, quartz, biotite, magnetite, with trace amounts of hornblende. Texture (hand sample): Overall grain size is coarse grained, with a porphyritic texture, non-foliated.
A pH 7 is neutral, which means that it is neither an acid nor a base. A pH of 8 to 14 means that the substance is a base. The lower the pH level, the stronger the acid, and the higher the pH level, the stronger the base.
An acid is a substance that donates hydrogen ions. A base is a substance that accepts hydrogen ions. The Ph scale is a scale based on how acidic something is the lower the Ph the higher the acidity is but the higher the ph the lower the acidity it is. In order to test pH you can use pH strips or pH liquid which in terms will change the substances color determining its pH.The range for the pH scale is 0-14, the lower the number is the more acidic it is, the higher the more base it is. Rain is normally acidic due to that Carbon Dioxide in the air dissolves in raindrops, giving them a pH between 5 and 6.
A pH scale measures how basic or acidic a liquid is. The numbers tell you how acidic or basic the liquid is. The numbers go from 0-14. Acids are found from 0-7 and bases are found from 7-14. Water is right in the middle of the pH scale, its at 7 pH. Three theories that outline the definition of a acid or a base
A pH ranges from 0 to 14; these numbers measure how acidic or basic a component. 7 is neutral, anything under 7 is acidic, and anything greater than 7 is basic or alkaline. A substance is distinguished as acidic or basic in comparison to the hydrogen ion concentration relative to pure water; distilled water also has a pH level of 7. Some substances can make the pH level of a substance raise or decrease.
