Krotec; Honors Bio Period 4 Photosynthesis Lab Report I. Introduction The photosynthesis lab is designed to quantify photosynthesis‚ enabling a number of variables to be tested for their effects on photosynthetic rate. The production of oxygen‚ is used as an indirect measure of photosynthetic activity.The lab allows the examination of the effects of different wavelengths of light on photosynthetic activity. The other aspect of the lab includes Paper chromatography‚ which is
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Helicopter Lab * Objectives: the objective is to study the effect of variables on the helicopters’ flight. The goal is to observe which can stay in the air for the most time. * List of materials: 3 patterns for a paper helicopter‚ scissors‚ tape ruler‚ and paper clip. * Procedures: 1. Cut the solid lines and fold the dashed ones. Fold A toward you and B from you to form wings. Then fold C and D inward to overlap‚ forming the body. Fold up the bottom on the dashed line and hold it
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In the 1920’s before sound was introduced into film we had silent films. Stories were told through expression and even music. Pianists‚ complete orchestras‚ organists‚ and even some actors and narrators were invited by theaters to accompany the films being shown (Silent Films). On the Info Please website‚ the author of Movies and Films writes "by the 1920s‚ silent film writing‚ acting‚ photography‚ and music had reached an aesthetic pinnacle: very subtle emotional and plot nuances could be conveyed
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position? Setting‚ conflict and main characters are a few ways to construct something dangerous. In both “A Sound of Thunder” and “Being Prey” are dangerous in different and similar ways. In the stories the setting‚ conflict and main characters is what put the characters in a tough situation. “A Sound of Thunder” and “being prey” setting has a lot in common and a lot of differences. “A Sound of Thunder” setting is in 2055 or the future and in a prehistoric jungle. “A week‚ a month‚ a year‚ a decade
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10–15 10–18 Name exa peta tera giga mega kilo hecto deka — deci centi milli micro nano pico femto atto Abbreviation E P T G M k h da — d c m m n p f a Physical Constants Acceleration due to gravity Universal gravitational constant Electron charge Speed of light Boltzmann’s constant Planck’s constant Electron rest mass Proton rest mass Neutron rest mass Coulomb’s law constant Permittivity of free space Permeability of free space Astronomical and Earth data Radius of the Earth equatorial polar average
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disc. 3. Make sure the tape is threaded through the gates and is free of snags. 4. Turn the timer on and pull the strip through the gates. 5. Make sure you are getting dots on the underside of the tape. 6. Use the test tape to decide on the best speed to pull the tape‚ so that the dots are easy to read. 7. Place a +1.5 meter piece of tape in the timer. 8. Pull the tape through a gentle‚ constant motion with one hand. 9. As you pull‚ operate the stop-watch with the other hand. The time should
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Introduction The purpose of this lab was to test different antacids‚ to find out which would be the most effective to take. Stomach acid problems come from a overproduction‚ and build up of gastric acid (HCl). In order to determine which antacid is the more effective‚ four different brands of antacids were chosen‚ and tested. The purpose of an antacid is to balance out the pH inside a person’s stomach. PH is the measurement of molar concentration of hydrogen ions that are present in the solution
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Does concentration affect the speed of chemical reactions? Problem: We are proving that “concentration” (the amount of reactants) is one of the things that can affect the speed of chemical reactions. We are also finding a way to keep the lid on the film canister for the longest period of time. We are using vinegar and water as reactants and changing the concentration every time to see the difference between the rates of reactions speed. Materials: - 1 graduated cylinder - 1 film canister
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Sounds are produced by the vibrations of material objects‚ and travel as a result of momentum transfer when air molecules collide. Our subjective impression’ about the frequency of a sound is called pitch. High pitch has high vibration frequency‚ while low pitch has a low vibration frequency. A pure musical tone consists of a single pitch or frequency. However‚ most musical tones are "complex summations" of various pure frequencies - one characteristic frequency‚ called the fundamental‚ and
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“A Sound of Thunder” and “Nethergrave” Critical Essay Ray Bradbury’s “A Sound of Thunder” beautifully describes the future and had a lot better story plot than Gloria Skurzynsky’s “Nethergrave”‚ which lacked the edge-of-the-seat action that “A Sound of Thunder” contained. One reason I prefer “A Sound of Thunder” over “Nethergrave” is the concept of time travel. Another reason is that Ray Bradbury has great descriptions and adjectives of what he thought the future would be like. Also‚ the characterization
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