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# How does temperature affect the viscosity of oils?

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Introduction

How does temperature affect the viscosity of oils? Prediction I predict that as the temperature of the oil increases the viscosity will increase. This means that the ball bearing will drop down quicker as the oil is heated. I think this because when the oil is heated the molecules will vibrate because they are given energy by the heat. This causes the molecules to move apart leaving gaps in between which the ball bearing will be able to move through easily. Method Take a glass tube and hold it in a clamp stand. Mark up to where you want to put the oil. Fill up to the mark with C6 oil at room temperature. Then drop a ball bearing from the rim of the glass tube. Make sure you start the watch at the exact same time as you drop the ball bearing. Stop the watch as soon as the ball bearing touches the bottom of the tube and put the time of this in the results table. ...read more.

Middle

However at 0� to the table the ball bearing didn't move at all, that's why I chose a position between the two. This meant it would move down fairly quickly but not too fast as that we couldn't time it. Here are some of our results Tube angled at Tube angled at Tube angled at 90� 0� 35� 1st time recorded 0.35 sec's N/A* 1.96 sec's 2nd time recorded 0.39 sec's N/A* 1.92 sec's Variable Factors One of many variable factors would be the gradient of the tube. This must be kept at the same angle - 35�. An easy way to do this is to leave the clamp alone and only open and close the claw part of the clamp. Another factor is the temperature of the oils. To do this you must measure the oils temperature and make sure that you measure the oil, not just the water they are being heated in. The height of which the ball bearing is dropped should be kept the same so that it doesn't gather more momentum before it hits the oil. ...read more.

Conclusion

Time 1.59 1.39 1.1 0.99 0.8 2nd Time 1.71 1.31 1.21 1.08 0.93 3rd Time 1.61 1.49 1.1 1.1 0.94 4th Time 1.81 1.51 1.12 1.23 0.98 5th Time 1.54 1.56 1.15 1.09 0.89 Average 1.652 1.452 1.136 1.098 0.908 C10 1st Time 2.14 1.86 1.44 1.61 1.04 2nd Time 2.17 1.88 1.55 1.14 0.97 3rd Time 2.13 1.84 1.5 1.16 1.01 4th Time 1.19 2.01 1.49 1.12 1.01 5th Time 2.32 1.99 1.54 1.15 0.98 Average 1.99 1.916 1.504 1.236 1.002 C12 1st Time 2.7 1.92 1.57 1.16 1 2nd Time 2.67 2.18 1.66 1.25 1.05 3rd Time 2.67 2.01 1.63 1.15 0.97 4th Time 2.81 1.96 1.64 1.15 1.02 5th Time 2.69 1.95 1.62 1.29 1.1 Average 2.708 2.004 1.624 1.2 1.028 C16 1st Time 4.81 3.36 2.77 2.49 1.81 2nd Time 4.71 3.36 2.79 2.22 1.56 3rd Time 4.92 3.56 2.68 2.43 1.64 4th Time 4.75 3.52 3.14 2.31 1.57 5th Time 4.9 3.61 3.08 2.42 1.74 Average 4.818 3.482 2.892 2.374 1.664 Analysis From my table and graph I can see that ...read more.

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