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# Drop height affecting Depth of sand

Extracts from this document...

Introduction

Practical #25

General Information

Title: Drop height affecting Depth of sand

Date: 23-03-05

Planning Stage

Aim: To investigate the depth of the sand depending on the height at which the ball is dropped from.

Variables:

Independent variable chosen: The height at which the ball is dropped

Dependent variable chosen: The depth of the sand after removing the fallen ball from it.

Constant variables and how they will be controlled:

 Variable How we will keep it constant Amount of sand We leave the sand in the bucket and make sure that none spills over. Type of sand Use the same one for each trials Ball Use the same ball for each trial, with the same size, volume, material and brand. Height of sand, compression Flatten or compress the sand back to how it was, as accurately as possible, by using a flat surface.

Research Question

How does the height of the drop affect the depth of the sand?

Hypothesis

Middle

Recover the sand so that it again, levels up to about 2/3 of the tray, using the same amount of compression as the previous one, with the plank of wood.Add 10cm to the drop height and drop for 3 trials, repeating steps 4-8 until you’ve reached a drop height of 60cm.You should record your information in the table shown below and then make a line graph, plotting height versus average depth.
 Independent variable:HEIGHT (cm) Dependent Variable: DEPTH (cm) Trials Average Observations 1 2 3 10 20 30 40 50 60

Conclusion

Evaluation

Materials

 What worked well? What didn’t work well? Suggested improvements The marble. It didn’t sink in too much or “float” too much at the surface of the sand, enabling us to have not too small of a measurement as we would have with a tennis ball and also, not too much of a hassle when retrieving it from the sand. The sand. It was too moist

This student written piece of work is one of many that can be found in our GCSE Height and Weight of Pupils and other Mayfield High School investigations section.

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