Homework Energy Sources

Transcription

1 Homework Energy Sources May 2003 Core Paper No.3 (a) Anna drives an electric car to go to work. She recharges the battery pack of her car every 80km by connecting the battery pack to the mains supply. Complete the following sentences by filling in the missing words from the list below: mechanical electrical fossil chemical When the battery of the car is connected to the mains supply, energy is changed to energy. When the car is driven on the road, this energy is changed to energy. The car does not use fuel from a pumping station. State one advantage and one disadvantage of each of the following types of energy. Type of energy Advantage Disadvantage Nuclear Energy Solar Energy Various features of our houses help to reduce heat transfer. Explain how each of the following helps to reduce heat transfer: (i) double-glazed windows, (ii) silver painted roofs. Homework Ch 9 Page 1 of 7

2 September 2003 Core Paper No.6 (a) Define the following: (i) Renewable energy source; (ii) Non-renewable energy source. State whether each of the following is a renewable or a non-renewable source of energy. (i) Fossil (ii) Nuclear (iii) Solar (iv) Wind Give one advantage and one disadvantage for using each of the following energy sources. (i) Biomass Advantage Disadvantage (ii) Hydroelectric Advantage Disadvantage Homework Ch 9 Page 2 of 7

3 April 2004 Core Paper No.7 The table shows the percentage of different types of energy sources used in developed countries and in developing countries. Source Percentage of Energy Sources used Developed Countries Developing Countries Fossil Fuels Nuclear 6 1 Hydroelectric 6 6 Biomass 3 35 (a) (i) Which of the above energy sources are renewable? (ii) State two advantages of using renewable sources of energy. (iii) Suggest one reason why renewable sources of energy may be problematic to use in large quantities. From the information provided in the above table, is it true that developing countries use energy sources that cause more pollution, than developed countries? Give one reason for your answer. Name one advantage for each of the following types of energy: (i) hydroelectric energy; (ii) nuclear energy; (iii) biomass energy. Homework Ch 9 Page 3 of 7

4 April 2005 Core Paper No.7 (a) Name two main differences between renewable sources of energy and non-renewable sources of energy. (i) Five main sources of energy are: coal, nuclear fuel, natural gas, oil, hydroelectric Which three energy sources in the above list are known as fossil fuels? (ii) Explain briefly the origin of fossil fuels. (iii) Name one main disadvantage of using fossil fuels. The diagram below represents the energy flow diagram in a typical power station. Fill in the two missing labels to show other energy outputs from a power station. Homework Ch 9 Page 4 of 7

5 September 2006 Core Paper No.2b Houses use a lot of energy that mostly comes from power stations. The following is a table containing the most common sources of energy that can be used to power houses. In the table below, list one advantage and one disadvantage of each of the following sources of energy. The first one has been done for you. Source of Energy Advantage Disadvantage Fossil Fuel Easily available due to extensive distribution network. Produces high quantities of pollutant gases and solid waste. Solar Nuclear Biomass April 2007 Core Paper No.7c Hydroelectric power is a renewable source of energy. In the table below list two renewable and two non-renewable sources of energy. Renewable Non-renewable Homework Ch 9 Page 5 of 7

6 September 2004 Paper IIB No.1 (a) Define the terms: (i) renewable energy source; (ii) non-renewable energy source. The following paragraph deals with different types of energy sources. Fill in the spaces below by using one of the following terms: tidal, geothermal, fossil, biomass, hydroelectric, nuclear One way of generating electricity is by using fuels, such as oil, gas and coal. These fuels are formed under the ground when dead matter is squashed under extremely high pressure over millions of years. Some power stations use fuels such as uranium and plutonium to generate electricity. Alternative sources of energy do exist. Energy obtained from the natural heat in volcanic rock under the ground to generate electricity is called energy. When dead plants and animals rot, bacteria produce methane gas which is collected and burned as a fuel. This type of energy is called. Another type of energy is that generated from falling water. This energy is called energy. energy is the energy generated by the motion of tides. Today, a number of people install a solar water heater on the roofs of their houses. (i) Name one advantage of using solar energy. Homework Ch 9 Page 6 of 7

7 (ii) Give two reasons why the upper cover of the solar panel is made of glass. (iii) Give one reason why the pipes containing water are made of copper. (iv) Give one reason why the copper pipes are painted black. (v) Sometimes in a solar water heater, water is made to pass through pipes that are arranged in a zig-zag pattern. Name one advantage of such a setup. (vi) Hot water inside the pipes rises up. Explain why. (d) On an average summer day, a solar panel has a maximum power input of 1400W per 1m 2 of the solar panel. The total surface area of the solar panel is 3m 2. (i) Calculate its total power input. (ii) How much energy is absorbed per second by the whole solar panel? (iii) The solar panel provides a power output of 3570W. Calculate its efficiency. Homework Ch 9 Page 7 of 7