Investigate This 1 by Jasmine Ngu

Ms Ngu - Instructions

jasmine_yimei — 2014-03-12 13:36:14 UTC

Each group is to give at least 1 response each for the questions:

1: “How can we prevent inaccuracies of data collection?”

(Comment on field site conditions, safety measures taken, weather, groupings etc)

2: “How can we improve on data collection method?”

(Comment on how you handled the equipments)

Group 1

2014-03-13 02:27:24 UTC

1) During high tide, the readings measured might be inaccurate especially for wave height readings. It was very windy and the height measured could be inaccurate due to previous wave crest measured.(water mark(eg.1st crest height:90cm,2nd crest height:80cm.)

2) use marker to indicate the wave through and wave crest.Also put a weight on the meter rule to stabilise it.

Group 4

2014-03-13 02:27:53 UTC

1) Take many readings and take the average of the readings, each member can also participate in recording down the readings to make comparisons as the recorder may have made a mistake while recording. The weather and tide level may have affected the readings as different groups took readings at different point of time and places.

2) We could have had waterproof equipments so we would not have had to worry we would wet the equipments and spoil them. We could have been more gentle and careful in handling them, for example, not to have left the equipments all over the place without anyone taking care of them.

Group 7

2014-03-13 02:28:11 UTC

Qn 1 : We can get something that is more stable than the meter rule as it always shakes due to the swash. It is very hard to get an accurate reading of the wave crest and wave trough.

Qn 2 : go to eye level when you read the wave crest and wave trough

Group 2

2014-03-13 02:28:55 UTC

1.) We can do the experiments several times so as to ensure an average, accurate readings.

2.) We can handle the equipments with care so as not to damage them in turn this allows us to get the most accurate readings possible.

Group 8

2014-03-13 02:29:41 UTC

1) the ruler must be straight. The wave is very strong and the ruler cannot stand properly. Someone must hold the ruler more properly.

2) we can improve it by using a stronger material ruler so it won't move when a wave come.

Group 6

2014-03-13 02:29:52 UTC

1) we had to deal with parallax error. We did not read the readings at eye level. This causes an in accurate reading. There was a parrallax error because we were standing on rocks and if we had bend down to read the readings, it would be very dangerous. - Asyraf

2) we can try our best to bend over to read the readings at eye level. We will try our best to ensure our safety. We can get two people to hold the person who is reading at the eye level so that the person will not fall over.

Group 9

2014-03-13 02:30:38 UTC

1) - Repeat the experiment at least 3 times and do average reading.

- Exclude freak readings

- Some of the waves crashes too fast and hence resulting in unclear readings.

2) - When the waves crash against the ruler, the ruler bend due to the force of the wave against the ruler, hence a inaccurate reading may be read.

- The reading shouted ou by the group member is unclear and too fast

Group 3

2014-03-13 02:34:58 UTC

1) we can try to take the readings on another beach which is not so rocky, so that readings could be effectively measured.

2) we can take more readings and average them. The meter rule used to measure the wave crests and wave trough is not vertically straight to the ground, hence the readings that we take May not be accurate.

Group 5

2014-03-13 02:37:07 UTC

Read the readings at eye level to get more accurate readings and prevent parallax error