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HIA International — Grade 6

Unit 1: Cells and organisms

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Unit 2: States of matter, atoms and compounds

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Unit 3: The Solar System and energy

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Unit 4: Living organisms and classification

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Unit 5: Metals, non-metals, acids and alkalis

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Unit 6: Sound, the Earth and eclipses

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Unit 7: Microorganisms and food webs

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Unit 8: Chemical reactions

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Unit 9: Electricity and circuits

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Quiz

Checkpoint Grade 6 Unit 9 – 9.1 Flow Of Electricity

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Flow Of Electricity Checkpoint Physics quiz: free practice for Cambridge Checkpoint Physics 0893. Work through this Flow Of Electricity Checkpoint Physics quiz and get instant feedback on every answer. If you get stuck, review the 1.1 Flow of electricity lesson. More practice: Cambridge Checkpoint Physics 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 50
  • Passing grade: B+
  • Time limit:
Start Quiz
1.
Why is an electric current in a copper wire described as a flow of charge?
Because the copper atoms move along the wire
Because the moving electrons each carry a negative charge
Because the wire becomes positive when it is touched
Because the cell adds charge to the copper
2.
Which practical work belongs to Flow Of Electricity?
Measure current at different points in a series circuit and compare readings
Test materials in a simple circuit and classify them from evidence
Translate between a real circuit and a labelled circuit diagram
Use a complete circuit model and distinguish electron flow from conventional current direction
3.
Match each situation to what the free electrons in the metal are doing. Which pairing is correct?
Metal in a complete circuit – drifting in one direction
Metal not in a circuit – no electrons present
Circuit with an open switch – drifting in one direction
Metal in a complete circuit – not moving at all
4.
The diagram shows the free electrons in two pieces of copper wire, P and Q. One wire is lying loose in a drawer; the other is part of a closed circuit with a cell. Which option identifies the wire in the circuit and gives the correct reason?
Dr Dabour Hub Academy - figure 1
Wire P, because its electrons are moving and Q's are not
Wire P, because its electrons move in more directions
Wire Q, because its electrons all drift the same way
Wire Q, because only a circuit contains free electrons
5.
Match each pair of charges to what they do to each other. Which pairing is correct?
Positive and negative – push apart
Negative and negative – pull together
Negative and positive – pull together
Positive and positive – pull together
6.
What is the least a circuit needs for a current to flow?
A lamp and a switch joined by wire
A cell and a switch, with no wire
A cell and a complete loop of wire
A lamp, a cell and an open switch
7.
A class uses a loop of string to model a circuit. The diagram shows the moment Student E lets go. What happens to mark X, on the far side of the loop, and what does this tell us about a real circuit?
Dr Dabour Hub Academy - figure 2
It keeps moving, as only the string near E is affected
It stops too: a break anywhere stops all the electrons
It speeds up, as the electrons are no longer held back
It moves backwards, as the push from E is removed
8.
Kofi measured the current through the same lamp using different numbers of cells joined the right way round. What pattern do his results show?
More cells gave a smaller current
More cells gave a bigger current
The current stayed the same each time
Only the third cell changed the current
9.
Four students built circuits as described in the table. Whose circuit will have a current flowing in it?
Ana's circuit
Ben's circuit
Chen's circuit
Dev's circuit
10.
The battery pack of an electric car is made from hundreds of separate units joined together. What is each of those units called?
A single battery
A single terminal
A single electron
A single cell
11.
Which definition should be paired with electrons?
the rate of flow of electric charge
negatively charged particles
the type of charge carried by an electron
connection points of a cell or battery
12.
Tariq placed different materials in a gap in a circuit containing a cell and a lamp. Which statement best explains his result for the copper strip?
Copper has electrons that are free to move through it
Copper makes new electrons when the cell pushes on it
Copper has electrons, but wood and glass have none
Copper stores electrical energy and passes it to the lamp
13.
Which of these is a weakness of the string model of a circuit?
The whole string stops moving when one person lets go
The string keeps moving round in one continuous loop
The coloured marks all move in the same direction
Everyone pulls the string, but only a cell pushes electrons
14.
Omar built the four circuits A to D shown in the diagram. In which circuit will a current flow?
Dr Dabour Hub Academy - figure 3
Circuit A
Circuit B
Circuit C
Circuit D
15.
Look at the circuit. The lamp has one side marked L and the other marked R. In which direction do electrons pass through the lamp when the switch is closed?
Dr Dabour Hub Academy - figure 4
From R to L, towards the + terminal
From L to R, away from the + terminal
From L to R, because current starts at +
In both directions, half each way round
16.
Nadia is designing a simple torch. Which set of parts is the smallest set that will make its lamp light?
Lamp, switch and wire in one complete loop
Cell and lamp, with the lamp touching one terminal
Cell, lamp and switch with no connecting wire
Cell, lamp and wire in one complete loop
17.
Which statement correctly describes negative charge?
negatively charged particles
the rate of flow of electric charge
the type of charge carried by an electron
connection points of a cell or battery
18.
Which statement correctly describes electrons?
the type of charge carried by an electron
connection points of a cell or battery
the rate of flow of electric charge
negatively charged particles
19.
Which statement correctly describes terminals?
negatively charged particles
the type of charge carried by an electron
the rate of flow of electric charge
connection points of a cell or battery
20.
Rania set up a single-loop circuit with two ammeters, one next to the cell and one on the far side of the loop. She opened the switch part-way through and recorded both readings every 5 seconds. What do her results show?
Dr Dabour Hub Academy - figure 5
Only the reading nearer the switch fell to 0 A
The far ammeter reached 0 A about 5 s after the other one
Both currents fell slowly and steadily over the 60 s
Both readings fell to 0 A together, between 25 s and 30 s
21.
The lamp in a circuit goes off when the switch is opened. Three students explain why. Which explanation is best?
Zara: "The loop is broken, so no electrons can flow"
Leo: "The switch soaks up the electrons as they arrive"
Ivy: "The electrons in the wire stop existing"
Sam: "Only the lamp runs out of electrons"
22.
A student drew four pairs of hanging charged balls and added arrows to show how they moved. Which pair has been drawn incorrectly?
Dr Dabour Hub Academy - figure 6
The pair labelled A
The pair labelled B
The pair labelled C
The pair labelled D
23.
Match each part of the string model to what it represents in a real circuit. Which pairing is correct?
The coloured marks – the cell
A person letting go – a lamp lighting
The people pulling – the wires
The moving string – the electrons
24.
Match a key term to its meaning. Which pairing is correct?
Terminal – a very small particle inside an atom
Cell – a store of chemical energy that can become electrical energy
Electron – one of the two connections on a cell
Component – the flow of electrons around a circuit
25.
Amir made the table shown about what flows around a circuit. Which row contains a mistake?
The Current row – current is not a flow
The Wires row – the wires stay where they are
The Electrons row – electrons stay in the cell
The Heat row – heat travels round with electrons
26.
A cell is connected into a complete circuit. Which terminal pushes electrons out into the wire, and why?
The positive terminal, as it is stronger
The negative terminal, as like charges repel
The positive terminal, as opposites repel
Both terminals push equally into the wire
27.
Layla expected lamps on long wires to take longer to light. Her results are shown in the table. Which explanation best fits her results?
Electrons travel from the cell faster than light does
The long wires were thicker, so electrons arrived sooner
The lamps light from the voltage flowing along the wire
Every part of the wire already has electrons in it
28.
Which statement best expresses the lesson objective about Flow of electricity?
Describe how electrons move in circuits
The terms attract and battery are always interchangeable
Evidence is unnecessary when studying Flow of electricity
Every model is an exact copy of reality
29.
Which term is described as: connection points of a cell or battery?
electrons
current
terminals
negative charge
30.
Which term is described as: the type of charge carried by an electron?
electrons
current
negative charge
terminals
31.
Which term is described as: negatively charged particles?
negative charge
current
electrons
terminals
32.
Which term is described as: the push a cell gives to the charge, measured in volts?
charge
electrostatic charging
voltage
potential difference
33.
When a metal wire is joined into a complete circuit with a cell, its free electrons stop moving _____ and start moving in the same direction.
towards the negative terminal
in the same direction
backwards and then forwards
randomly in all directions
34.
Using the table, the wristwatch is powered by a _____, whereas each of the other devices is powered by a battery.
single cell
single battery
single terminal
single component
35.
Electrons carry a _____, so they travel towards the positive terminal of a cell.
positive charge
neutral charge
negative charge
magnetic charge
36.
In a metal wire, the electrons that carry the current are the ones that are _____.
free to move through the metal
held tightly to one atom
made inside the cell
positively charged
37.
In a single-loop circuit the wire is cut at one point. Electrons keep flowing in the parts of the loop far away from the cut. True or false?
True – only electrons close to the cut are stopped
False – all the electrons stop, not just those at the cut
True – electrons far away still feel the cell pushing
False – the electrons near the cut start moving faster
38.
A larger current means less charge passes each second. - True or false?
True
False
39.
Opening a switch makes a deliberate break in a circuit. True or false?
False – a switch only makes the current smaller
False – a switch stores electrons until it closes
True, but the current still flows through the lamp
True – that is how a switch stops the current
40.
Current in a metal is carried by moving electrons. - True or false?
True
False
41.
Plastic contains electrons, even though it does not let a current pass through it. True or false?
True – all materials contain electrons in their atoms
False – plastic stops current because it has no electrons
False – only metals are made of atoms
True, but only after the plastic has been heated
42.
When two or more cells are joined together they form a battery. True or false?
True – that is what a battery is
False – a battery is always just one cell
False – joined cells are called terminals
True, but only when there are six or more cells
43.
Voltage is the thing that travels around a circuit from the cell to the lamp. True or false?
True – voltage carries the electrons along the wire
True – voltage flows while the current stays still
False – electrons flow; voltage is not a thing that flows
False – it is the wires that travel round the circuit
44.
Hana looks at the two power supplies X and Y in the diagram and says: "X and Y are both batteries." True or false?
Dr Dabour Hub Academy - figure 7
False – X is one cell; only Y is a battery
True – anything with + and − terminals is a battery
True – X and Y both store chemical energy
False – Y is a cell because it is in one case
45.
Two electrons placed close together would push each other apart. True or false?
False – both are negative, so they attract
False – electrons have no charge of their own
True – both are negative, and like charges repel
True, but only when they are inside a cell
46.
A buzzer has two terminals, just like a cell does. True or false?
False – only cells and batteries have terminals
False – a buzzer has one terminal for each wire pair
True, but only when the buzzer is switched on
True – many components have two connections
47.
An electron near a cell is repelled by the positive terminal. True or false?
False – it is attracted to the positive terminal
True – positive terminals repel all particles
True – the electron and terminal are both positive
False – terminals have no effect on electrons
48.
Sara says: "When a lamp is lit, it uses up electrons, so fewer electrons return to the cell than left it." True or false?
True – the lamp turns electrons into light
False – electrons are not used up by the lamp
True – half the electrons stay inside the lamp
False – more electrons return than left the cell
49.
Mia predicted: "Only the lamp next to the disconnected wire will go off." Her results are in the table. Her results support her prediction. True or false?
True – lamp 1 went off when wire a was removed
True – both lamps were on when no wire was removed
False – both lamps went off whichever wire was removed
False – neither lamp went off in any of her tests
50.
The free electrons in a copper wire lying on a desk, not connected to anything, are completely still. True or false?
False – they are moving randomly in all directions
True – electrons only move when a cell is connected
True – a loose wire contains no free electrons
False – they all drift slowly in one direction
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Part of Unit 9: Electricity and circuits — see every lesson and quiz in this unit.
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