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Your answers are highlighted below. Question 1. The largest renewable source of electricity generation in the United States is. Question 1 Explanation:. The correct answer is E. The most common type of hydroelectric power plant uses a dam on a river to store water in a reservoir.

Water is released from the reservoir and flows through a turbine, spinning it, which in turn activates a generator to produce electricity. Question 2. Which country has the greatest number of nuclear power plants on a per capita basis? Question 2 Explanation:. As ofFrance had 58 operating nuclear reactors and a population of about The United States and Japan had 99 and 42 operating nuclear reactors, with populations of about Question 3. Which of the following pairs is the predominant source of fuel for electricity generation in the United States?

Question 3 Explanation:. The correct answer is D.

Energy Worksheets

The predominant sources of fuel for electricity generation in the United States are natural gas and coal. Question 4. Which of the following is the precursor to coal, and is made up of partly decomposed organic material? Question 4 Explanation:. There are four major types of coal: lignite, sub-bituminous, bituminous, and anthracite.Hulscher University of Twente The Netherlands.

Introduction 2. Forms of energy 3. Energy conversion 4. Energy and power 5. Energy sources 6. Some notes on energy terminology 7. Energy flow 8. Energy units and dimensions 9. Energy losses and efficiency Equivalence and replacement of energy forms Energy balance Process energy requirements and gross energy requirements Examples of calculations of energy conversions 1.

Introduction Energy is involved in all life cycles, and it is essential in agriculture as much as in all other productive activities.

MCQ Questions for Class 10 Science Sources of Energy with Answers

An elementary food chain already shows the need for energy: crops need energy From solar radiation to grow, harvesting needs energy from the human body in work, and cooking needs energy from biomass in a fire. The food, in its turn, provides the human body with energy. Intensifying food production for higher output per hectare, and any other advancement in agricultural production, imply additional operations which all require energy.

For instance: land preparation and cultivation, fertilising, irrigation, transport, and processing of crops. In order to support these operations, tools and equipment are used, the production of which also requires energy in sawmills, metallurgical processes, workshops and factories, etc. Major changes in agriculture, like mechanisation and what is called the "green revolution", imply major changes with respect to energy.

Mechanisation means a change of energy sources, and often a net increase of the use of energy. The green revolution has provided us with high yield varieties. But these could also be called low residue varieties i. And it is exactly the residue which matters as an energy source for large groups of rural populations. Other sectors of rural life require energy as well. The provision of shelter, space heating, water lifting, and the construction of roads, schools and hospitals, are examples.

Furthermore, social life needs energy for lighting, entertainment, communication, etc. We observe that development often implies additional energy, and also different forms of energy, like electricity. Energy is a scarce resource, at least for some groups of people in some places and, maybe, for the world as a whole. A rational use of energy is then necessary for economic and environmental reasons.

This applies to agriculture as much as to any other sector of the economy.Transportation is a complex sector composed of light duty, medium duty, heavy duty, and non-highway vehicles; rail; aircraft; and ships used for personal transport, movement of goods, construction, agriculture, and mining as well as associated infrastructure.

The need for a safe, energy-efficient, operationally efficient, low emission, and flexible transportation system can be addressed by advancing technology throughout the transportation system.

Future personal vehicle markets—in which these efficient vehicle technologies compete—may be transformed by information technologies as well as by social and demographic trends. Technologies, including plug-in electric vehicles and fuel cell vehicles, offer the potential for integration between other energy systems such as electricity and buildings, which could be pursued to improve economy-wide efficiency and reduce emissions. This chapter focuses mainly on technologies applicable to light and heavy duty road vehicles, and surveys other modes and systems-level technologies considerations that could improve energy use across the transportation system.

Skip to main content. Chapter 1 — Energy Challenges. Chapter 2 — Energy Sectors and Systems. Chapter 9 — Enabling Capabilities for Science and Energy. Chapter 10 — Concepts in Integrated Analysis. Chapter 11 — Summary and Conclusions. Back toEnergy can neither be created nor destroyed but still everybody discuss about the energy crisis because a Energy transform into different form continuously. An ideal source of energy should have a higher calorific value b easy transportability c easy accessibility d All of these.

Fossile fuels are a non-renewable source of energy b renewable source of energy c both a and b d Neither a nor b. Answer: a Explanation: a Fossile fuels were formed over million of years ago and there are only limited reserve. So they are non-renewable source of energy. Dead organisms are transformed into petroleum and natural gas in a presence of air b absence of air c presence of sunlight d none of the above.

Which of the following problem is associated with a burning of coal? Select the important factor for the site selection of a thermal power plant. Answer: c Explanation: c Water is required to produce steam. Thermal power plants are setup near the coal field and transmission of electricity is easy than transporting fuel. Select the correct order of energy conversion in thermal power plant. Answer: b Explanation: b chemical energy — heat energy, mechanical energy, electrical energy.

Hydropower plant are located in the a desert area b plane area c hilly terrains d none-of above. Answer: c Explanation: c Hydroelectric power plant are generally located in high hilly areas where dam can easily be buit and large reservoir for storage of water can be obtained. Biogas is a better fuel than animal dung cake because a biogas has lower calorific value.

Answer: c Explanation: c Biogas has high calorific value and leave no residue, no smoke after burning and can be used for domestic purpose, running engins and in gas lanterns for illumination. Which of the following organism produces biogas from cow drug sherry in the biogas plant? Answer: b Explanation: b In the absence of oxygen, anaerobic micro-organism decomposed the compound of cow- dung sturry to generate biogas. Answer: d Explanation: d All are the factors that responsible for the blowing of wind.

Answer: d Explanation: d All the points given are the disadvantage age of using solar energy. The use of reflector in the solar cooker is to a Decrease efficiency b create green house effect c increase efficiency d none of these.

Answer: c Explanation: c Reflectors mirror are used to focus the sun rays along with heat radiation inside the box to achieve high temperature. Solar cells are made of a germanium b silicon c silver d aluminium.

chapter 8 energy sources and the environment answer key

The material used for interconnection the solar cells in the solar panel is a silicon b silver c aluminium d copper. A solar panel is made by combining in an arrangement a solar concentrator b solar cookers c solar cells d solar chimney. Answer: c Explanation: c A large number of solar cells connected together in a particular arrangement to deliver useful electrical power is called solar cell panel.

Tidal energy is a farm of energy obtained from the a motion of surface water in ponds b ocean in the form of tidal waves c tides occurs in the river water d motion of the wave in sea.Helmer's Website. Search this site. Subjects Language Mathematics Science. Tools and Information Learning Skills. Student Work Dragster Project. Lesson 8. Sample answer: When you hold an ice cube, thermal energy from your hand moves into the ice, causing it to melt.

chapter 8 energy sources and the environment answer key

Sample answer: If you want to keep a sandwich cold, you can place it in the refrigerator in order to reduce.

Sample answer: Conduction happens when two substances are touching. The particles of one substance collide with each other or with particles of the other substance and transfer thermal energy. Sample answer: Metals are good thermal conductors. They are used in radiators. Wood is a good thermal insulator.

It is used in many houses. The particles in the soup collide with the particles in the spoon, transferring thermal energy. The particles in the spoon collide with each other, conducting the thermal energy up the spoon. To avoid a burn, the chef should use a wooden spoon instead of a metal spoon. Pumice and gneiss are examples of rocks formed by conduction.

chapter 8 energy sources and the environment answer key

Diamond is a mineral formed partly by conduction. Sample answer: Moving continents push existing rock deep into Earth, exposing it to geothermal energy, high temperatures, and pressure within Earth, resulting in the formation of metamorphic rock. Diamond is considered a type of metamorphic rock because heat and pressure change one form of carbon into another form of carbon.

These convection currents transfer energy and cause some volcanic eruptions. The air above the land is generally much warmer than the air above the water. Therefore, air above land is more likely to rise and form a thunderhead.

Candle flames and incandescent light bulbs are sources of radiant energy here on Earth. You can tell that they emit radiant energy because they glow and feel hot. The rocks and water on a shovelled asphalt driveway are less able to reflect the visible light of the Sun. Therefore, a shovelled driveway will become warmer on a sunny day than an unshovelled driveway. The shiny surface of the aluminum and the white paint reflect radiant energy, keeping the bee hive from becoming too warm.

Microwave ovens use radiant energy. Microwaves allow food to be heated without direct contact with the heating source, and they do not require full movement of matter for the energy to be transferred from the heating source to the food.

This allows thermal energy to move between outgoing warmer air and the incoming cooler air, thereby recovering some of the thermal energy that might be lost to the outside. Sample answer: Builders can reduce conduction by using insulation.

They can reduce radiation by using low-E glass in windows and doors. Chapter 8: Energy Transfer and Conservation Lesson 8.Proceed to Checkout.

Using real-world case studies, a wide range of inquiry activities, and engaging science phenomena, Environmental Science: Your World, Your Turn puts the world in context by empowering your students to take an active role in their learning—and the world in which they live.

This program is based on real and relevant content that brings the world of environmental science to life while making it personal and actionable for every student.

Chapter 8 — Advancing Clean Transportation and Vehicle Systems and Technologies

Authentic case studies not only make key concepts relevant but they aid students as they learn to make sense of phenomena. The Central Case provides a consistent and engaging path for teaching core environmental science principles.

Students build critical observation and analytical skills as they work through the case study storyline. Students learn best, and enjoy learning, when they become active participants in their lessons.

Inquiry labs, open-ended investigations and research-based activities engage students in the engineering and design process.

Classroom and field labs encourage students to apply science to their local environment. Students learn science - by doing science. Environmental Science, Your World, Your Turn empowers students to draw their own conclusions and encourages them to think and act on both local and global levels.

They will build the critical thinking skills that they will need long after the class ends. About Us Menu. Search by author, title, ISBN. Contact your sales rep. What best describes your organization? Home School Contact Us reset. Real Research. Real Choices. Explore Real Issues Through an Integrated Case Study Approach Authentic case studies not only make key concepts relevant but they aid students as they learn to make sense of phenomena.

Connect Students with Research and Data Students learn best, and enjoy learning, when they become active participants in their lessons.

Motivate Students to Make Choices Environmental Science, Your World, Your Turn empowers students to draw their own conclusions and encourages them to think and act on both local and global levels. If you like this program, you may also like You may also like. Follow Us:. Find Solutions by:. Web Code What is this? All rights reserved.Present sources of energy include fossil fuels, various types of renewable energy, and nuclear power. Some of that energy has been preserved as fossil energy and some is directly or indirectly usable, such as via wind, hydro- or wave power.

Pearson Environmental Science Program for Grades 9-12

The amount of energy the sun provides has been measured by satellite to be roughly watts per square meter, although this amount fluctuates by about 6. The estimates for remaining non-renewable worldwide energy resources vary; the remaining fossil fuels total an estimated 0. Fossil fuels range from 0. The total energy flux from the sun is 3. Global energy use by source, : Fossil fuels remain our primary source of energy.

Renewable energy sources only comprised Coal fueled the industrial revolution in the 18th and 19th centuries. However, with the advent of the automobile, airplanes, and the growing use of electricity among consumers, oil became the dominant fuel during the 20th century.

The growth of oil as the largest fossil fuel was further enabled by steadily dropping prices from until Nowadays, coal, natural gas, and nuclear power are the most popular fuels for electricity generation.

Recent conservation measures have greatly increased energy efficiency.

ATP & Respiration: Crash Course Biology #7

In the U. Japan, which bore the brunt of the oil shocks, has also made spectacular improvements to its technology.

Now Japan has the highest energy efficiency in the world. As of Decemberthe world had nuclear reactors. Annual generation of nuclear power has been on a slight downward trend sincedecreasing 1.

Nuclear power plant in Germany : Nuclear fission power stations, excluding the contribution from naval nuclear fission reactors, provided about 5.

The environmental impact of the energy industry is diverse. Energy has been harnessed by humans for millennia. Initially, we used fire for light, heat, cooking, and safety.

The use of fire can be traced back at least 1.

chapter 8 energy sources and the environment answer key