Curriculum
Course: IB Physics HL
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Curriculum

IB Physics HL

Theme A — Space, Time and Motion

0/125 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/105 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/73 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/77 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/89 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/43 Dr Dabour Hub Science Diagram and Course Material
Quiz

I.1.3 Controlling Variables in Physics – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
In a fair test, how many variables are deliberately changed?
two
all of them
none
one
2.
When investigating how the length of a wire affects its resistance, which must be controlled?
temperature, diameter and material
length only
the number of readings
the colour of the wire
3.
A pendulum bob is released from 10° each time. The release angle is a:
dependent variable
independent variable
control variable
random error
4.
If repeated readings under the same conditions vary a lot, it suggests that:
the model is wrong
some variable is not well controlled
the instrument is perfect
the sample size is large enough
5.
Which change would keep temperature of a resistor roughly constant in an I–V experiment?
Increase the current for faster results
Use small currents and switch off between readings
Use a longer wire
Use a thicker wire only for last readings
6.
A student changes both the mass and the angle of a pendulum together. The main problem is:
the period will be zero
the length is not measured
the cause of any change in period cannot be identified
the string stretches
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Part of Tools and Inquiry — IB Physics skills — see every lesson and quiz in this unit.
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