Entry Level Science GCSE Homework Booklet

Transcription

1 Entry Level Science GCSE Homework Booklet Homework Task Date Set Date Due Parent Check Teacher Check 1. Human Health 2. Inherited Characteristics 3. Problems with crude oil 4. How has the Earth changed over time? 5. Home Insulation 6. Exam Revision 7. Exam Revision

2 Important Message for Parents and Carers Dear Parents and Carers, The teachers of Globe Academy believe that Home Learning is an integral part of developing every student and ensuring that they reach their academic potential. Home Learning is important because it is point where school and home come together. It serves as a window through which you can observe your children s education and express positive attitudes towards your children about their education and progress. As children grow older, homework and the amount of time engaged in homework, increases in importance. For Globe Academy staff, homework is an opportunity to provide additional academic instruction and further extend your child s learning. The benefits of Home Learning for you and your child are as follows: (1) Practice and participation in home learning tasks can improve your child s achievement. (2) When homework is completed accurately and to a good standard, not only will your child s general knowledge and grades improve but your child will also increase their mastery of basic academic skills, such as reading, writing, spelling and mathematics, something Globe Academy is committed to. (3) Your child s ability to bring an assignment home, gather and organise necessary materials to complete the assignment, return the assignment and receive a level/grade, strengthens his or her sense of personal responsibility for their learning. (4) Time management skills are learned and developed. (5) Further, when homework proceeds smoothly it can become (4) a positive aspect of your relationship with your child. (6) Home Learning offers schools an opportunity to let parents know what their children are learning and keeps parents informed about work being studied and completed in class time. (7) Home Learning helps the Academy achieve their overall mission of improving your child s achievement. (8) Homework is the bridge that joins schools and parents. For parents there is the potential to gain a greater appreciation of your child s education and achievement. For these valid reasons we are asking that parents/carers work with us to ensure that your child completes their homework.

3 Your child will receive a homework booklet for each subject and we ask that all parents/carers ensure that the tasks in this booklet are completed on time and to a high standard. Together we can improve your child s progress and attainment. Please sign below to confirm your agreement to support Globe Academy by checking and ensuring your child completes their Home Learning Tasks each week. In addition please sign and comment if necessary, the Homework Record sheets also in this booklet. Thank you in advance for your support. Do not hesitate to contact me with any queries or comments about Home Learning at Globe Academy. Kind Regards Ms. C. Fernandes (Vice Principal) Name of Student: Learning Family: Name of Parent/Carer: I agree to ensure that my child completes all the Home Learning Tasks in this booklet on time and to a high standard. Signature of Parent/Carer: Date: Home Learning Record

4 After completing each Home Learning task please complete the record boxes below. Task Details: Student signature/comment: Deadline date: Parent signature/comment: Date completed: Teacher signature/comment: Task Details: Student signature/comment: Deadline date: Parent signature/comment: Date completed: Teacher signature/comment: Home Learning Record

5 After completing each Home Learning task please complete the record boxes below. Task Details: Student signature/comment: Deadline date: Parent signature/comment: Date completed: Teacher signature/comment: Task Details: Student signature/comment: Deadline date: Parent signature/comment: Date completed: Teacher signature/comment: Home Learning Record

6 After completing each Home Learning task please complete the record boxes below. Task Details: Student signature/comment: Deadline date: Parent signature/comment: Date completed: Teacher signature/comment: Task Details: Student signature/comment: Deadline date: Parent signature/comment: Date completed: Teacher signature/comment: Home Learning Record

7 After completing each Home Learning task please complete the record boxes below. Task Details: Student signature/comment: Deadline date: Parent signature/comment: Date completed: Teacher signature/comment: Task Details: Student signature/comment: Deadline date: Parent signature/comment: Date completed: Teacher signature/comment: Homework 1 L.O. How do surfaces affect infrared radiation?

8 Success Criteria: Recall dark, matt surfaces are good absorbers and good emitters of infra red radiation. Explain that light, shiny surfaces are poor absorbers and poor emitters of infra red radiation. State that light, shiny surfaces are good reflectors of infra red radiation. Complete the sentences by using the words from the box below. emitter reflector absorber radiator light shiny dark matt object A d m surface is the best absorber of infra red radiation. A l s surface is the worst absorber of infra red radiation. A light shiny surface is a good r of infra red radiation. A dark matt surface is a good e of infra red radiation. A light shiny surface is a poor r of infra red radiation. A thermometer with a blackened bulb is a better a of infra red radiation than one that has not been blackened. Use the ideas above to explain each of the following. A thermal blanket used to keep a marathon runner warm has a light shiny outer surface. Sandwiches wrapped in shiny aluminium foil stay cool.

9 The clothing for summer sports like cricket and tennis is often white. Emitters and absorbers Match the beginnings with the correct endings. Beginnings Endings Houses in hot countries are often painted white it will radiate infra red energy more quickly Solar panels on the roof of a house are painted black better than a shiny surface Electric fires often have a shiny metal sheet behind the heating element light surfaces are poor absorbers of radiation A car radiator is usually painted black because so that they absorb as much solar radiation as possible A matt surface absorbs infra red radiation because light shiny surfaces are good reflectors of infra red radiation. Extension: Independent Learning Imagine you have been stranded in the Desert. What kind of clothing would you want to wear to help you survive? Explain why; use the level ladder to help

10 Entry Level 1 Entry Level 2 Entry Level 3 Say that light surfaces reflect more infrared radiation than dark surfaces. Explain that infrared radiation causes objects to heat up. Link these ideas together and suggest a solution to clothing worn in the desert. Homework 2: L.O. Particles and Energy

11 The use of kinetic theory to explain the different states of matter. The particles of solids, liquids and gases have different amounts of energy. All substances, solids, liquids and gases, are made from particles. Match the description to the correct diagram Description Container showing particles The particles in a solid are very close together vibrate in one place usually stay in a fixed pattern The particles in a liquid are close together move in all directions have no fixed pattern The particles in a gas are far apart move very quickly in all directions move all over the container Thermal energy transfer These methods of thermal energy involve particles. There are four different ways energy can be transferred by particles: 1. Conduction

12 This is the process of transferring thermal energy through solid material without any visible change in the motion (movement) of the particles of the material 2. Convection This is the process of transferring thermal energy by the movement of the fluid (liquid or gas) through which thermal energy is being transferred 3. Evaporation This is the process of transferring thermal energy to a liquid causing the particles to be converted to a gas. 4. Condensation This is the process of changing gas to a liquid. Which process is responsible for the thermal energy transfer in each of the cases below? Answer each one by using the word conduction, convection or radiation. 1. The handle of a saucepan heats up when the pan and the contents are placed on a cooker hot plate 2. An object near to a gas fire becomes warm 3. The air in a room warms up when an electric heater in the room is switched on 4. Thermal energy travels between two objects in space 5. Thermal energy travels through a metal bar 6. Thermal energy travels through water

13 Homework 4 L.O. How do we insulate our houses? Mid Term Assessment Revision Students must know that: Heating and insulating buildings. U-values measure how effective a material is as an insulator. The lower the U-value, the better the material is as an insulator. Heating and insulating buildings The diagram shows some of the ways in which thermal energy can be lost from a house. Heat Loss Complete the following sentences by using the words from the box below. double glazing loft insulation draught-proofing curtains tank radiator doors roof cavity windows floors insulated walls

14 Thermal energy is lost through the r, w, w and the d and f. To reduce heat loss, a building can be i. To reduce heat loss through the roof, l i can be used. C wall insulation cuts down energy loss through the walls. By d -p windows and doors, energy losses can also be reduced. To further reduce energy loss, d g can be used; this will reduce the heat lost through windows. Thick c can also reduce energy loss. Thermostatic r valves can be used to prevent a building from over-heating and so save energy. Also, insulating pipes and the hot water t can also reduce heat loss. What is a U Value? The U Value is a measurement of the rate of heat loss through a material. The lower the U Value the better an insulator the material is. For example, a single glazed window with standard glass will have a U Value of 5.6, while a double glazed window with standard glass will have a U Value of 2.8, and a triple glazed window will have a U value of 1.8. Single glazed U Value 5.6 Poor insulator Double glazed U Value 2.8 Good insulator Triple glazed U Value 1.8 Excellent insulator

15 Put these types of insulation in order of their U Value. The best insulator should be number 1 and the worst insulator should be number 7. Two have been done for you. Type of Insulation U Value Best insulation based on U values A. Hot water tank cover B B. Loft Insulation C. Thick curtains D. Double glazing E. Draught-proofing F. Hot water pipe lagging G. Cavity Wall Insulation C

16 Homework 5 Units of Electricity Power rating of an appliance The power rating of an appliance tells you the rate at which it transfers energy. The more powerful a device, the faster the rate at which it will transfer energy. We measure the power of a device in watts (W) or kilowatts (kw). 1 Kilowatt is equal to 1000 Watts. Draw a ring around the appliance that will use the most energy when switched on for one hour. 2kW fire 300W television 60W fan 1kW toaster

17 Heater 230V 6A 2000W 50Hz What is the power rating of the appliance above? Complete the sentences by using the words from the box below. energy higher time switched power electrical unit The amount of electrical energy transformed depends on the p of the appliance and the length of t for which it is switched on. Heaters usually have a h power rating that the other e devices. If you leave a light bulb s on when you are not using it, you will end up paying for more units of electrical e The u of power is the watt or kilowatt.

18 In some power stations an energy source is used to heat water. The steam produced drives a turbine that is coupled to an electrical generator. The photograph shows a power station. Complete the sentences by using the words from the box below. steam electrical oil turbine generator heat The energy source usually coal, o or gas is set alight. The energy released is used to h the water which produces the s. This drives the t which then turns the g which produces e energy.

19 Homework 6 L.O. What is energy efficiency? Part 1 When energy is transferred, only part of it may be usefully transferred, the rest is wasted. Fill in the blanks in the table. Each missing word is a type of energy. Devices Useful energy Wasted energy Light bulb L from the H from glowing filament. the filament to the surroundings. Radio S H Television L and H S Hair dryer H and K S and H of the motor. A hot iron H L Food mixer K S H Kettle H of the water. H transfer from the element to the kettle and S Heater H energy L from of the surroundings. the glowing element. Loudspeaker S H

20 Wasted energy is eventually transferred to the surroundings, which become warmer. Where might the wasted heat energy be in these examples? Cycling As the cyclist pedals her energy turns the wheels. Friction between tyre and the road changes some of the energy into wasted h energy which is lost to its surroundings. Driving a car C energy from the burning fuel powers the car engine. However some of the chemical energy increases the temperature of the engine. This wasted h energy is lost to its surroundings. Light bulb in torch Chemical energy from the torch s battery is transformed to e energy. The filament in the light bulb glows as useful light energy and wasted h energy. The wasted heat energy is lost to its surroundings. The wasted energy becomes increasingly spread out and so becomes less useful.

21 Choose the correct word from each pair in the sentences below. Heat from barbeque The further the light travels from the lighthouse the more spread out it becomes so the (more / less) useful it is. Sound from police siren The further the heat travels from the barbeque to the food, the more spread out it becomes so the (more / less) useful it is. The further the sound the police siren travels the more spread out it becomes so the (more / less) useful it is.

22 Homework 7 L.O. Why are some things more efficient than others? Part 2 The greater the percentage of the energy that is usefully transformed in a device, the more efficient the device is, e.g. the comparison between filament lamps and fluorescent tubes. Complete the following sentences. When devices transfer e, only part of it is usefully transferred to where it is wanted. The rest of the e is transferred in some non-useful way or wasted. Usually the e is wasted to the surrounding as h Concept of energy conservation: The energy that is w does not disappear; it is changed into a non-useful form. The non-useful energy in a light bulb is h. The non-useful energy in a liquidiser is h. Efficiency of some energy transfers. Energy is measured in units called joules (J). Device and amount of energy supplied to it Useful energy produced Wasted energy Filament light bulb 100 J 20 J as L J as heat Low energy light bulb 25 J J as light 5 J as heat Electric kettle 2000 J Electric drill 500 J 1800 J to h the water 300 J as kinetic (movement) energy 100 J to h the element 200 J as h Television 200 J 20 J as light and sound 150 J as h

23 The greater the proportion of e supplied to a device that is usefully transferred, the m efficient the device is. A car engine is 20% e. This means that a lot more energy is w than is used to drive the car forward. A microwave is 60% efficient. This means that out of every 100 joules of electrical energy supplied, 60 joules are used to heat the food. What happens to the other 40 joules? Extension of Deep Learning: In 2012 the European Union made it compulsory for the UK to only sell energy efficient light bulbs. Can you explain why they may have done this, using the ideas above?

24 Homework 8: Revision Quiz 1. Which radiation transfers heat? a) Infrared b) Ultraviolet c) Visible Light 2. Which surfaces are good absorbers of heat? a) Dark surfaces b) Shiny surfaces c) Both 3. In which substance are the particles packed closest together? a) Solid b) Liquid c) Gas 4. In which substance do the particles have the most energy? a) Solid b) Liquid c) Gas 5. If a gas is cooled to a liquid, what change of state occurs? a) Evaporation b) Condensation c) Freezing 6. Which object will transfer the most heat to the surroundings? a) Large surface area and large volume b) Small surface area and large volume c) Large surface area and small volume 7. What does a U-value measure? a) The electrical conductivity of a substance. b) How good a heat insulator the substance is. c) The mass of the substance 8. What is the useful energy from a light bulb? a) Heat b) Light c) Sound 9. What is the wasted energy from a light bulb? d) Heat e) Light f) Sound 10. What does efficient mean? a) The amount of useful energy generated by an appliance compared to the overall total energy. b) The total amount of energy generated. c) The cost of running the appliance.

25 11. What unit is electricity measured in by power companies? a) Kilowatt hours b) Volts c) Amps 12. What is the unit for power? a) Amps b) Watts or Kilowatts c) Volts 13. In coal, oil and gas power stations, what turns the turbines? a) Men b) Waves c) Steam 14. What does a turbine work? a) Battery b) Generator c) Wires 15. Which of these are a renewable energy source? a) Coal b) Gas c) Wind 16. Which of these power stations does not release carbon dioxide gas? a) Coal b) Tidal Power c) Biofuel 17. Which of these is not a type of wave? a) Transverse b) Inverse c) Longitudinal 18. Which of these has the longest wavelength in the EM spectrum? a) Gamma b) UV c) Radio 19. Which of these EM waves are used in mobile phones? a) Infrared b) Radiowaves c) Microwaves 20. Which of these provides evidence for the Big Bang? a) Green shift b) Blue shift c) Red shift