An Example Lab Report Page 5

Velocity vs. Temperature

3500

3000

2500

2000

1500

CCCD

1000

500

125

Degrees C

Graph 1.1

Variation of Velocity with Temperature, by Material

Answers to Exercise Questions

1. Is the velocity of sound unaffected by temperature?

No. Graph 1.1 shows that in some cases (SB and CCCD) the velocity is directly

proportional to temperature although it may be inversely proportional (GA).

2. If the CCCD material had also been subjected to 175C, what would you expect?

It is unlikely that a velocity at 175C could have been measured as the entire bar probably

would have been consumed by the lab team before the transducers could be applied.

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