BrightRed Publishing. Bright Red Study Guide National 5 Practical Woodworking

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All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher or under licence from the Copyright Licensing Agency. Name the types of energy involved in each of the following situations. What is meant by an energy transfer?

Describe the main energy transfer in each of the following situations. Give three ways of conserving energy: a in the house; b in transport. State the principle of conservation of energy. Electricity and Energy 1 Potential and National 5 Woodwork Revision Video kinetic energy 1. Use the national 5 woodwork revision questions for each quantity in the expression. A 52 kg bag of rubble is raised 1.

Calculate the potential energy gained by the bag of rubble. A skier has a total mass of kg. The skier starts from rest on a slope at a height of m. The skier travels down the slope and then back up the next slope to come to rest at a height of 75 m. Calculate the loss in potential energy as a result of the run. Four tonnes of water every National 5 Woodwork Revision Job second are allowed to fall through a height of 50 m from behind a dam in a hydro-electric power scheme.

Calculate the energy available every second from this water. What type of energy does an object have because of its motion? Copy National 5 Woodwork Revision Online and complete the following sentence. Calculate the kinetic energy of a trolley of mass 0. A car of mass kg is travelling at 26 m s-1 about 60 mph. A lorry of mass kg is travelling at 13 m s-1 about 30 mph. Show by calculation which vehicle has the greater kinetic energy. A child has a mass of 38 kg. The child sits at the top of a chute at a height of 5.

On sliding down, the speed of the child at the bottom is 5. Calculate the energy transferred by friction. Show that, if air resistance can be ignored, the speed of a falling object is independent of its mass and depends only on the height through which it falls. A stone falls from a cliff which is 80 m high. Other than kinetic energy, what is the main form of energy produced? Electricity and Energy 3 Electrical charge carriers and electric fields Electrical charge and electrical current 1.

What is the difference between an electrical conductor and an insulator? Name each of the two types of electrical charge. Explain why most objects are normally uncharged. Write a statement about: a the attraction of charges; b the repulsion of charges.

Which kind of charge is carried on an electron? What is an electrical current? State the relationship between charge, current and time.

Calculate the current in a circuit when a charge of C is transferred in 1 minute. Calculate the charge transferred in a circuit that has a current of 0. A capacitor stores 20 mC of charge. During discharge there is an average current of 0. Calculate the time taken to discharge the capacitor. State what is meant by: a an alternating current a.

What is the purpose of the mains supply or a battery in an electrical circuit? State which of the two types of electricity, a. Draw the pattern that would be seen on a suitably adjusted oscilloscope when it is connected to: a a source obtained from the national 5 woodwork revision questions supply; b a battery.

Electricity National 5 Woodwork Revision Value and Energy 5 Electric fields 1. What is an electric field? What effect does an electric field have on charges? What happens to free electric charges in a national 5 woodwork revision questions when an electric field is applied to the conductor?

What is meant by potential difference voltage? What happens to the brightness of a lamp when the potential difference across it is increased? National 5 woodwork revision questions quantities in electricity that are often confused are voltage and current. Show that you understand the differences between these quantities by explaining what is meant by each of them.

What is meant by the electrical resistance of a resistor? What energy transfer takes place in a resistor? State what happens to the current in a circuit when the resistance in it is increased. Describe a way to show the relationship between resistance, current and voltage in a simple circuit. Your description should include: the circuit diagram s ; the steps taken to show the relationship.

A student sets up the circuit shown to measure national 5 woodwork revision questions resistance of resistor R. The following results are obtained. A R Reading on voltmeter V 0. State the relationship between the temperature and the resistance of a conductor.

Electricity and Energy 9 Calculations 1. A student sets up the circuit shown to investigate the resistance of a filament lamp. V a i Plot a graph of the voltmeter readings against the ammeter readings for the results. A car headlight lamp is connected across a 12 V car battery. The current in the lamp is 3 A. Calculate the resistance of the lamp. A resistor of resistance !

Calculate the current in the resistor. Electricity and Energy 5. Calculate the resistance of resistor R in the circuit shown, from the information given. Draw a diagram to show the way that: a an ammeter is connected into a circuit; b a voltmeter is connected into a circuit; c an ohmmeter is used. Redraw the following circuit to include: a a meter to measure the current in the resistor National 5 woodwork revision questions b a meter to measure the potential difference across the resistor R.

Redraw the following circuit to include a meter to measure the current in resistor R1 and a meter to measure the potential difference across resistor R3. Draw the circuit symbol for: a i a cell; national 5 woodwork revision questions a battery; iii a lamp; iv a switch; v a resistor; vi a fuse. Starting at the source of energy and working clockwise, name the components in each of the following circuits. Name two electrical components that have a resistance that changes due national 5 woodwork revision questions a change in the physical conditions.

An LED is connected in a circuit and it emits light.

The Assignment in the National 5 Course is worth 70% of the course award in the subject, with the exam question paper worth 30%. National 5 Practical Woodwork Exemplar Exam Paper. Practical Woodwork S3 Exam Revision Notes. National 5 Practical Woodwork Paper COURSE OUTLINE. The National 5 Practical Woodwork course is assessed in two main areas. External written exam paper – 1 hour, 60 marks (scaled to 30 marks) Internal practical model – 70 marks The National 5 Practical Woodworking course provides opportunities for candidates to gain a range of theoretical and practical woodworking skills relating to tools, equipment, processes and materials. The National 5 Practical Woodworking course provides opportunities for candidates to gain a range of theoretical and practical woodworking skills relating to tools, equipment, processes and materials. They also develop skills in reading and interpreting working drawings and related documents as well as an understanding of health and safety.

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