https://padlet.com/a_romero2/favh9nhfa2jc en-us 2019-02-06 19:16:12 UTC 2019-04-02 02:09:02 UTC hello@padlet.com a_romero2 https://padlet.com/a_romero2/favh9nhfa2jc/wish/328453467 Question: If i slide the brick a crossed fordifferent surfaces, then how will each surface affect the amount of friction.

Background: There are 4 different types of friction static, sliding, rolling, and fluid.Examples of theses type  of friction are, static friction is like a balloon rubbed  against your hair, sliding friction happens when you slide down a slide, rolling friction is like when a car is rolling and the road is still, fluid friction is like when you drink from a straw and the fluid is forced to go in the straw. In this sort of project called friction board i will be using the sliding friction and this will start happening when the brick is moving a crossed the 4 different surfaces.The 4 surfaces effect the mass of a brick is because friction is making the brick resistant to the surfaces, from rough surfaces increase friction while smooth surfaces decrease friction.

Hypothesis: If i slide four different surfaces then i think the cork surface would have the greatest amount of friction and the cardboard surface would have the least amount of friction because the cork surface is rough and has different texture and the cardboard surface is smooth and flat.]]> 2019-02-06 19:24:45 UTC https://padlet.com/a_romero2/favh9nhfa2jc/wish/328453467 a_romero2 https://padlet.com/a_romero2/favh9nhfa2jc/wish/328455029 Material: square brick, spring scales, cardboard surface, cork surface, rubber surface, sandpaper surface

Procedures: 1.Put the brick on the triple beam balance 2.Measure the mass of the block in grams 3.Take the brick off the triple beam balance 4.Get a ruler 5.Measure the length 6.Measure the width 7.Measure the height 8.Grab your cardboard surface [ like a clipboard ] 8.Lay the brick down on your cardboard surface 9.Attach the hook of the spring scale to the hook on the brick 10.Pull the brick a crossed while watching the force on the spring scale 11.Record your observations and repeat it two more times so you can have three trials for your control 12.Get your cork surface 13.Move the brick on the cork surface variable one 14.Repeat steps nine and ten for accuracy 15.Grab your rubber surface 16.Move brick to the rubber surface this will be variable two 17.Then repeat steps nine and ten 18.Get your sandpaper surface 19.Move brick to sandpaper surface this is variable three 20.Repeat steps nine and ten again 21.Use calculator to find the average [ average is the three results added together divided by three ] for three trials for each surface 22.After you get your results make a data table and graph]]> 2019-02-06 19:27:17 UTC https://padlet.com/a_romero2/favh9nhfa2jc/wish/328455029 a_romero2 https://padlet.com/a_romero2/favh9nhfa2jc/wish/328456346 Observations: When we put the brick on the cardboard surface and attached the spring scale, we tried moving it but we had a problem because we had two different boards for the surface so the brick wouldn't move nicely how it is supposed to.When we put the brick on he cork there was a lot of missing cork peaces so when we went to slide it with the spring scale it would not work very well.The rubber had a problem to because some peaces of the rubber came loose so when we pulled it the brick would flip over so it took a while for the brick to get moving properly.The sandpaper did not go so well either because when we tried to move the brick the to boards we were using were not flat so we could have gotten the data wrong.

Data table:
                        https://docs.google.com/spreadsheets/d/1xseMWa2o6wfwNQw0cFoIOU0hpsYPY9i2_7aq_QxXokk/edit?usp=sharing
Graph: ]]> 2019-02-06 19:29:40 UTC https://padlet.com/a_romero2/favh9nhfa2jc/wish/328456346 a_romero2 https://padlet.com/a_romero2/favh9nhfa2jc/wish/328457495 Conclusion: I was doing friction boards, when are group was setting up we got a brick, a spring scale, and 4 different surfaces we were testing.We had to weigh the block and measure it. Then we got to get started on putting the spring scale on the brick and move it a crossed the 4 different surfaces and record are data. The numbers showed us that there were a few errors because the cardboard/ control surface got higher numbers then the cork surface and that is wrong cause cardboard is flat and the cork surface is stiff. So are lowest average was the cork out of the cardboard, rubber, sandpaper and are highest average was the rubber out of the cardboard, cork, sandpaper. My hypothesis was incorrect because i said the cork would cause the most force but the rubber caused the most force also i said the cardboard would cause the least force but instead the cork caused the least amount of force. Some errors of my experiment was we had separate boards so that meant the brick had to switch to another board and that was a problem because the brick would flip over. Also the two different types of boards had missing cork peaces and  the rubber was loose on the two boards. As you can see there is a lot of errors that have gone wrong in my groups results.I learned that a lot can go wrong when scientists do experiments and that is why you have to have multiple trials.I also have learned that a lot can happen when you change the surfaces that i used in my experiment.This experiment applies to the real world because imagine you were pushing a couch on a hardwood floor and it suddenly switches to a carpet floor so you have to use more force because there is more mass that your pushing. My measurable question based on my experiment is, how would the mass of the block effect the amount of friction that is caused between the block and the surface.My results were the rubber surface got the most friction and the cork surface got the least amount of friction because rubber has a stronger grip to the block and cork had missing pieces so it wasn't a complete surface therefore the block had less friction.]]> 2019-02-06 19:31:48 UTC https://padlet.com/a_romero2/favh9nhfa2jc/wish/328457495