A bulb has a power of 60W. If it is accidentally left on over night (10 hours), how much money is wasted? C. Energy Efficiency 1. A fridge uses 120 Joules of energy every hour, it produces 80 Joules of energy. Calculate its efficiency.
Testing the Albedo of Earth’s Major Surface Substances Aidan Walsh Mrs. Bell SNC2D Wed. 14, 2012 PURPOSE: To test the relationship between each major surface substance’s albedo and climate. QUESTION: What is the relative albedo of each individual substance tested? HYPOTHESIS: I predict that the soil and leaves will have a lower albedo than the ice or water, which will have a high albedo. EXPERIMENTAL DESIGN: First, we gathered material that we thought would represent major surface substances on Earth. Then we placed each substance under a heat lamp which represented the energy from the sun, and proceeded to measure the difference in temperature for each over the time period exposed to the light energy.
Anaerobic Digestion: Work in partnership build and operate anaerobic digestion facilities to generate electricity. 7. On-Site Renewables: Achieve 20% on-site energy generation from renewable energy sources for all new builds. 8. Refrigerants: Continuing to replace HCFC gases and help to develop better alternatives than HFCs in our refrigeration and air-conditioning systems.
With similarities also come differences. Semi-conductor solar cells are harnessing sunlight in order to produce electric energy. Photosynthesis is harnessing sunlight for self-sustainability. Solar cells cannot create food and energy in which to allow animals and organisms to use as nutrients. Photosynthesis creates carbohydrates to be used as nutrient value to animals for consumption.
Name: Date: 17/02/2012 Lab Partner: TITLE: Specific heat capacity of copper INTRODUCTION: We are going to calculate the Specific heat capacity of copper, which means that we’re going to measure how much heat is needed to raise the temperature of 1kg of the substance for one Kelvin. If we know that the specific heat capacity of water is 4.18 kJ it’s possible to calculate the specific heat capacity of copper as well. The only required information we need is the mass and change in temperature both for water and copper. HYPOTHESIS Prediction: I think the specific heat capacity of copper will be pretty low compared to the water’s. Explanation: Because of copper is a good conductor compared to water because the electrons jump from one element to the other more easily in copper than water.
| The Global Energy Budget | The amount of solar radiation reaching the surface of the Earth limits the photosynthetic output of ecosystems. | | Only a small fraction of solar energy actually strikes photosynthetic organisms. | | Total primary production in an ecosystem is known as gross primary production (GPP). | GPP and NPP | GPP is the amount of light energy that is converted into chemical energy per unit time. | | Net primary production (NPP) is equal to GPP minus the energy used by the primary producers for respiration.
In photosynthesis the conversion of energy helps create oxygen, water, and glucose. “Photosynthesis transforms solar energy into the chemical energy of a carbohydrate.”( One major difference is that solar panels only rely on the sunlight. In photosynthesis, the plants rely on
Step 8- Put the 2 liter bottle with dark written on it in a cupboard or a closet where it will not see light. Step 9- Add 10 ml of water to the plants each day. (or as many times as possible). Step 10- Measure the height of the plants (cm) everyday for 10 days and collect data on the data table provided. Data: GRAPH 1 |Days | |Seed Height (Cm) | | |Average Height (cm) | | | |1 | |1 | | | |2 | |
The average value of energy output/input ratio is 1.57 and 1.77 for the wet-milling and dry-grind ethanol processes, respectively. The aim of the research is to identify whether algae or corn ethanol is a better biofuel as an energy source for vehicle. Chemical Concept Theory Behind Production of Microalgae In transestrification, triglycerides are reacted with methanol which is the least expensive alcohol to produce methyl esters of fatty acids, that are biodiesel, and glycerol. Parent oil used in making biodiesel consists of triglycerides in which three fatty acid molecules are esterified with a molecule of glycerol. It is catalyzed by acids, alkalis and lipase enzymes.
The main concept is exactly how coal burning power plant is used to heat water, which drives a turbine that produces power without emission of the greenhouse gases. Although, nuclear power is consider a cleaner form of energy it requires uranium, which must be mined and transported to power plants, which requires conventional means to abstracting the uranium by burning fossil fuel. According