8th Grade Online Quiz
This quiz covers Heat Transfer and Electricity
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1 Match these metals with their conductivity
Best conductor
Better conductor
Good conductor
Steel
Aluminium
Copper
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2 Match these instruments with their function
Ammeter
Voltmeter
Current
Voltage
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3 How does the energy from the sun get to us?
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4 Smoke rises in a chimney. What is this process called?
5 Expalin how the process in question 4 happens in terms of density
6 What voltage do three 1.5 V cells produce when arranged in series?
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7 The property of a material that resists the flow of electrons is called ...
8 In what unit is this property measured?
9 What is the advantage of parallel circuit connection?
10 Give one practical application of this advantage
11 Match these equipment with their arrangement in a circuit
Voltmeter
Ammeter
Series
Parallel
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12 Explain why the handle of cooking pots are made of plastics or wooden materials
13 What scientific name are these types of handles called?
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14 In terms of heat transfer explain why the freezer compartment is mostly in the upper part of a refrigerator
15 Why would you wear a white shirt during summer rather than a black one?
16 Where is the store of electrical energy in a circuit?
17 Explain the energy transformation in a buzzer
18 What tiny particles move around a circuit when the switch is closed and make the current of electricity?
19 If a series circuit has 3 cells and 1 lamp, and a parallel circuit has same materials. Which circuit would have the brighter lamp?
20 Would a longer wire have more resistance? Explain
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