Life cannot exist without energy Energy flows in one direction thru the ecosystem eg. Green plants (autotrophs) harness light energy from the sun. An another consumers eat the autotrophs and other consumers. This flow of energy is a consequence on the laws of thermodynamics‚ were in sense that energy can neither be stored or created‚ but is transferred from one type to another. At which sun is converted to heat. The transfer of energy in an ecosystem‚ can be showed in a number of ways eg as a
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Nova: “Absolute Zero” Name: Jordan Mills Per: 7 PART 1 – THE CONQUEST OF COLD 1. Cornelius Drebbel had a wager with King James I in 1620. What was it? Said that he could turn summer into winter 2. What does adding salt do to ice? Lowers the temperature 3. What is Robert Boyle primarily famous for? He’s famous for his experiments on air and for his curiosity concerning the cold. 4. When were the first accurately calibrated thermometers made
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Absolute Zero. Aim: i) To find the relationship between Temperature and Volume when heating a gas. ii) To find the of absolute zero temperature‚ i.e. 0 Kelvin (-273.15°C). Variables: Dependant Variable: Volume Independent Variable: Temperature Hypothesis: The volume of the water will increase as temperature increases‚ since the distance of the particles in the water between each other increases‚ making the water "expand"‚ increasing the volume of the water. Apparatus & Materials: 1000mL
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Section 9-1 Review Key Ideas 1. Identify the primary source of energy that flows through most living systems The sunlight. Autotrophs use sunlight to make their own food. Organisms that can’t make their own food consumed the food molecules made by autotrophs‚ eat autotrophs or eat organisms that consumed autotrophs. 2. Explain how an organism’s metabolism is related to Earth’s carbon cycle. An organism’s metabolism is related to using energy to build organic molecules which contain
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Aim: to design an experiment that investigates the effectiveness of huddling in penguins (using test tubes as penguin models) Materials: 1x Bunsen burner 1x gas tubing 1x heat proof mat 1x gauze mat 1x tripod 2x large beaker (250ml) 500ml of water 13x test tubes 2x rubber bands stop watch Method: 1. Set up the Bunsen burner on top of a heat proof mat underneath a tripod and gauze mat. 2. Fill a 250ml beaker with water up to about 180-200ml then put onto of the gauze mat and
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Chemistry Study Guide Oct 2nd 1 hour Exam Chapter 9- Thermodynamics KE= ½ mv2 w= F∆x w= force × distance ∙ A state function refers to a property of the system that depends only on its present state. ∙Internal Energy = heat + work ∆E = q + w ∙Pressure = Force/Area = P = F/A ∙Work= - external pressure × change in volume w = - P∆V Enthalpy H = E + PV qp = ∆E + P∆V ∆H = qp ∆H = H products H reactants
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5.2 Energy conversion and conservation 1. A change from one form of energy to another is called an energy conversion. 2. Is the following sentence true or false? Most forms of energy can be converted into other forms. True 3. Describe the conservation of chemical energy to mechanical energy in your body. Your body changes chemical energy which was in your food through the system of digestion. Once the energy is released‚ it turns to mechanical energy to move your muscles 4. When you throw
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Heat in physics is defined as energy in transit. It is symbolized with the alphabet Q. (Strong‚ Martin C. The Great Alternative and Indie Discography of Heat) It is mostly connected with different movements of atoms‚ molecules and other particles. These particles either consist of particles that are either hot or cold. High temperature bodies‚ are often caused due to the high heat transfer‚ which is created by chemical reactions‚ nuclear reactions‚ electromagnetic dissipation‚ or mechanical dissipation
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SOME BASIC TIPS ON HOW TO WRITE A LAB REPORT Just searching on line will give you hundreds of examples so I just want to keep this really simple and basic and if you want to or need more explanation‚ just search the specific heading like “ How to write a conclusion on a lab report” and you will get more info than you ever wanted! Title Page • The title of the experiment. • Your name. • The name of the class. • The date the lab was performed or the date the report was submitted
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Effect of Temperature on Cricket Respiration Crickets are ectotherms that rely on their environment as a source of heat for their metabolism. Warmer temperatures allow crickets to respire at a greater rate. Respiration rate (ppm/sec/g) 1.2 1 0.8 0.6 0.4 0.2 0 0 5 10 15 20 25 30 35 40 45 Temperature (°C) Figure 1: Respiration rate (ppm/sec/g) of crickets at 6 different temperatures (°C). Values are means of 6 respiration rate measurements. Error bars represent
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