My aim is to try to find out that how much a marble (crater) would make a width and depth. And from different heights, and we are trying to find out that how much impact well it have on the sand and the effect.

And the gravity is pulling the marble down. And the speed of the marble will be fast.

Apparatus   

Clamps stand,

Meter ruler,

Marble,

Basin,

Sand,

Weighing scale,

Piece of wood,

Water,

String.

Plan

I am going to do my investigation by first weighing the marble and then we will get some sand and we will get some sand and we will put it in the basin. Then I will get the clamp and clamp the meter ruler on top of the basin and make it level. Then I will throw the marble from different heights. Then I will record our results on a table. And I think that I’m going to use the same marble.

Method

What I did was that I worked with a partner. What we did was that we got some sand and we added some water to make it softer, then got the basin and we added the sand into it. Then we set up the measuring apparatus, by first getting the clamp stand, and clamping the meter ruler. Then we got the marble and we then threw it from the first height. Then we took a smaller and we took the wood and laid it over the depth that the marble made before.  Then we took some string and we carefully put the string into the depth that the marble had made.  Then we marked the string and then we measured it.  Then we measured the width, but this time we measured along.  Then we carried along and threw each height, at a stage what was between 200mm.

Fair test

What we changed in my investigation was that we done our experiment twice to make it a fair test. We leveled our sand so that each time we done our experiment we would have a clean area. What we kept the same was that the marble. We had to weigh our marble first. The weight of the marble was 14g.We used that same marble every time. And we used the same apparatus every time. But we had to change the wood pieces because they kept on braking.

Results

   

                                                             

CONCLUSION

What I found out that how much higher you throw the marble the deeper depth you get and some times the same length. I was wrong about the length was going to the same. I can see a pattern that every 200m you go up that it only rises about 20-30mm. And how high you throw you throw the length well be bigger.

Improvements

I could have improved my investigation by using more marbles. And using a bigger ruler to measure the height. And by using a bigger marble and more sand. And by experimenting by rocks or a brick. And I could of improved by having more sand and using more marbles. And I could of used a bigger basin so I could of put some more sand.