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Capacitor
charge/discharge - Experiment with different component values.
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Fridges
and Freezers - Plot temperature inside a fridge or freezer. Also plot
temperature of the heat exchanger on the back. How is temperature affected
by opening the door or by adding something hot to the fridge. Can you
see the effect of the thermostat?
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Fruit
Power - Make a fruit battery. Experiment with different fruits and
electrodes.
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Global
Warming - Show how CO2 can effect warming. Heat two bottles using
a lamp. One contains air and the other CO2.
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Heat
Insulation - Wrap test tubes in different insulating materials. Compare
wet and dry insulation
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Heat
Loss Through Windows - Compare temperature inside and outside a window
over 24 hours. If possible compare single and double glazing.
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Infra
red remote controls - Use a photo diode to view the invisible.
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Investigating
the effects of wheel imbalance
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Light
decay (inverse square law) - How does light level decay with distance
from source
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Light
Insulation - Experiment with different materials to see which cuts
out the most light. Does using two bits of insulation have twice the effect?
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Measuring
the speed of sound - Using 2 microphones or musical recorder
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Output
of a solar cell - What factors affect the output voltage and power
available.
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Response
time comparison of two types of heat sensor
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Sound
Decay - Use a sound source with a constant level and plot how it decays
with distance.
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Sound
Insulation - Use a sound source with a constant level and experiment
with different insulating materials.
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Sound
waveforms - Use oscilloscope to show the sound waveforms produced
by someone whisting, speaking or singing. Switch on the spectrum analyser
to see the frequency components (e.g. who's whistle has the highest frequency,
who can whistle the loudest?)
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Sound
waveforms of musical Instruments - Look at the scope waveform and
FFT spectrum of different musical instruments.
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