Density Gizmo

Today in science class we worked on a density gizmo. If the density of an object is less than the density of water the object will float. If the density of an object is greater than the density of water, the object will sink. For example, if you put two objects in a beaker of water and Object A floats and Object B sinks, then Object A's density is less than the density of the water and Object B's density is greater than the density of the water.

Blog of the day! What we did today is...

Today (September 27, 2011) we worked on three density gizmos. Plus we found out if some candy bars could float. For example, KitKats float but Hershey bars do not. What the gizmos taught us is that a material, no matter what size it is, will always have the same density. They also taught us that if the density is less than 1 gram/ cm^3 then the object will float. If the density is more than that then it will sink. By the way, density=mass/volume is something we learned a while ago, but I thought I would add that. After the gizmos we had to take assessments that dealt with what was in the gizmo.

inthis experamentwe tested the effect of an underground spring. and i hypothosised that a river would form in the diatemaceous earth and the sand and it did. for the gravel i thought it would go between the rocks and it did. for our other experament we tested what flooding would do and all ofthe overflowed.

Earth Quake Experiment

Earth Quake Experiment:

Hypothesis- Our hypothesis was that earthquakes would from rivers.

Procedure- We turned the stirrer on high, and put the tub on the magnetic stirring hot plate. Once we did that we noticed the vibration of the magnets (earthquake). Then we kept the tub on the hot plate for 20 seconds. Once we did that, we turned off the hot plate, and noticed the pivots.


Conclusion- Our conclusion was that earthquakes do not form rivers, unless they are near a water source. Lastly, our hypothesis was incorrect.

Hypothesis

The hypothesis: the water will flow around the objects placed in the Diotamatios earth, some water would flow back into the the same stream, and some of it would flow into different areas making a new streams, according to the slopes

Prosedure:The prosedure was simple first the water was pured in to make a stream, the water flowed according to the slope of course, so this was recorded, then we added debrise.

Conclusion: The water flowed under it, through it, and around it, and most of the water went back into the origional stream.

Slope experiment

Hypothesis: The higher the slope, the more erosion will form, which will eventually form a river.
Procedure: First we took the tub full of diatematious earth, and filled a graduated cylinder and filled it to 100 ML. Then we slowly poured it into the tub. We had to pour the water into a coffee filter and filter it. Then we set the tub to a 10 degree angel, and repeated the process.
Conclusion: The higher the slope, causes more erosion, which formed a river. Our hypothesis was correct.

Earthquake:
Hypothsis: Earthquakes form rivers.
Proceadure: Took tub and put magnets under the diatematious earth. Then set the stir on high. Then put the tub on the magnetic stiring hot plate for 20 seconds. Notice the vibrations (Eaethquake).
Conclusion: Earthquakes do not make rivers. They make rivers only if there is a water source near by. Our hypothesis was wrong.

Earthquake Experiment

Hypothesis- Earthquakes form rivers.

Procedure- Put magnets under diatamous earth. Put stir on 60rpm. Then put tub on magnetic stirring hot plate. Notice vibration (earthquake). Keep hot plate on for about 20 seconds. Then turn off. Notice divits.

Conclucion- Earthquakes don't form rivers unless a water source is near. Our hypothesis was wrong.

Observations- No river was formed there were just divits and craters or holes.

Slope Experiment

Hypothesis-The higher the slope, the more erosion, which will form a river.

Procedure-Lay the tub of diatomceous earth flat. Fill graduated cylinder with 100ml of water. Slowly pour water into tub. Notice marks. Lift end of tub 10 degrees. Fill graduated cylinder with 100ml of water. Then slowly pour into tub. Notice marks.

Conclusion- The higher the slope the more erosion, which formed a river. Our hypothesis was correct.

Observations- With no slope it makes a lake and erodes. With a 10 degree slope it erodes and a river starts to form.

For our experiment we tested the strength of a dam. Our hypothesis was that it would stop the water from passing. We tested our hypothesis and our conclusion was that yes it did stop the water.

Dam

For are experiment we tested if a dam will stop water. Are hypothises was that yes it would stop the river flow. We tested that hypothises. Are conclusion was that yes if you build a dam that has no leaks in it then it will stop the water from flowing down a river.

River Formation/ Dam project

For Science class my table group had to do a project on the process of how dams are used to keep water in certain places. Our hypothisis was that "If we build a dam with foam blocks in a river, then it will stop the water and form a pool of water near the banks." To start out, we got a tub of sand a dug out a river. Then we placed the foam blocks in the middle of the river. Well our first experiment didnt work, because water was able to flow under the blocks. So we made a new experiment but placed play-dough under the cracks. This held the water fairly well. It leaked a little water through the play-dough and once there was too much water the wter eventually flowed right over the top. I think that the experiment was a succees because we constructed a fairly realistic dam that was able to hold the water back. If we were to do this project again I was use a bigger tub to make a larger river and dam. I was also use a more sturdy substance like cocking, to fill under the dam.

river formations

on Tuesday, September 20th, we did river formations. at first, our experiments didn't work out so great. but we eventually got the hang of it.

we had to write down the experiment, procedure, hypothesis, and our conclusions. we did 2 experiments. we tried underwater springs, and mudslide.

underwater springs: experiment #1.

Procedure: first, we took a bin of rocks, and put a small plastic tube underneath the rocks. my hypothesis was that it was going to come up from under the rocks and form a path. once we turned the water on, nothing happened for a moment. we looked closer, and saw that the water was running under the pebbles. it didn't form a path above the rocks.

mudslide: experiment #2.

Procedure: we used a container of sand/dirt, and buried the plastic hose underneath the sand. my hypothesis was that the water would flow down, carrying the mud with it. we observed it closely, and the hypothesis was right. the water flowed down the slope, carrying the mud along.

River Formation

My group and i tested how geysers effect the formation of rivers. My hypothesises that to diatomatious earth a river would form easily. To the pure gravel i though nothing would happened. And to the sand mixture i thought a river would be formed with a little resistance. When we tested on the diatomatious earth a river was formed easily. On gravel nothing happened. And with the sand mixture a river was formed with a little resistance.






We also tested overflowing lakes. My hypotheses was that in diatomatious earth the lake will be destroyed. I thought in gravel it will just leak through. And in the sand mixture a river might form. When we tested it, diatomatious earth fell apart. Gravel let watter leak through. And sand let a small river form.

River Formations

I didn't do this experiment but I got a hypothsis on how a river can be formed.

- Glaciers can form rivers cause when they slide down the earth they create valley's and then rain would fill them up.

- How to test this- Take a tub filled with diatomaceous earth then put a large ice cube in it and have it on a tilt. Then " let it rain".

Can Rivers Be Made From Slopes and Glaciers?

In my 9th grade class we began to study the formation of rivers. We were allowed to pick two ways that we thought might be the reason rivers were formed. The two that my pod had picked were Slopes and Glaciers. First we began with a hypothesis for slopes. We hypothesised that when it rained that an erosion would occur, which carries the top layer away creating a form of a valley. During the experiment we first propped a tub full of sand that resembles the earths soil and other features then gradually poured water at the top. To our astonishment our hypothesis was true. As the water poured over the sand particles the sand gradually got pulled to the bottom, pushing rocks aside as it went. Which left a path that would eventually develop into a small stream, then over time possibly a river.

For our Glacier experiment we left the box of sand at 6'' high and flattened the sand. We hypothosised that the glaicer would melt and as it melted would begin to slowly move down the hill and grab particles, while leaving a path behind it. After we hypothosised we then took an average sized bowl that had frozen water in it and placed the ice onto the top of the sand. After that we took a heater and heated a glass graduated cylinder on it until the water was nearly boiling, then carefully poured it onto the ice cube. As we observed we noticed how easily the ice melted but how it barely moved. After about thirty minutes of observing the ice had barely moved but was almost gone. We then finished our experiment and concluded that our hypothesis was wrong. Rivers arn't really formed from glaciers. It's possible that a few might be but it would make numerous years before one could begin to be formed.

River Formation

Hypothesis- In science we are studying the formations of the river. We wanted to study Glceris and how they made path in the earth. although it takes a long time for the glacier to melt we ended up doing it in less then a hour. We used Diatomaceous Earth - Kinda Like A Earth Suspences. it help work like the Earth.

Procedure- We used a block of ice and waited for it to melt and see if it left a trail. it left a little trail but ot a big one. we had to use hot water and boil the water to make it melt.

River Formation Experiments

1st experiment: Slope.
Hypothesis: The steeper the slope, the better chance of a river formation.
Procedure: Grab a tub of diatomaceous earth and set it down flat. Fill a graduated cylinder with 100mL of water. Slowly pour the water into the tub then notice the marks. Lift one end of the tub and set something under it to form a slope. Fill the graduated cylinder with 100mL of water and slowly pour it into the tub. Notice the new marks.
Data: No Slope: Lake/Crater. Slope: Erosion, River Formation.
Conclusion: The steeper the slope, the better chance of a river formation. The hypothesis was correct.
2nd experiment: Earthquake
Hypothesis: Earthquakes cause river formations.
Procedure: Grab two magnets then put magnets under diatomaceous earth. Turn the stir on high on the magnetic stirring hotplate. Put tub on magnetic stirring hotplate. Notice vibration (earthquake). Keep magnetic stirring hotplate on for 20 seconds. Turn off the magnetic stirring hotplate. Notice the divits.
Data: Divits/Craters, No River.
Conclusion: Earthquakes do not form rivers. The hypothesis was wrong.

River experiment

My groups first idea was to make a kind of geiser to start the river. so we hooked up a rubber tube to the faucet ad buried the end in the diatomaceous earth and covered it then turn on the faucet. wen the water broke through it immediately started to make the river. it also worked in the sand and took longer to work in the rocks. our second idea was to make a little lake on top of a mound of diatomaceous earth to see if it would form a river when it over filled. this one worked only in the diatomaceous earth and kinda just got soaked up by the sand and pebbles. ummm yay i suppose.

My Groups Experiment Testing Run Off Water and Glaciers!

Run Off Water

Hypothosis: For run off water was to make a slope of diatenacious earth and then pour water down it to see if it would take earth and rocks down with it. Simulating run off water, But the way we did it was a little different than the way we thought.

Procedure: So for run off water we simply tilted the bin of diatenacious earth, and then filled up a cup with water. We then proceeded by pouring the water from the cup onto the earth, simulating rain. Right when the water hit the earth is make a rather large round imprint. once the imprint filled up with water, the water started running down towards the bottom of the bin. The water was moving really fast, and taking all the earth and rocks with it. After a couple of seconds the lines of water got thicker and deeper, which then made rivers! Our experiment was successful, and clearly showed how run off water works.

Glacier

Hypothosis: We take ice and but it in a bin of diatenacious earth and see how it affects the ground.

Procedure: We took an Ice cube and set it in the earth, simulating a glacier. once the ice cube started melting we could see an indentation in the earth. once it was fully melted it made what would be a lake. Our process showed how glaciers would affect the earth

River Formation Lab

Hypo. The water will split into smaller streams and they will not merge back together.

Opservations: The water did split at the debris into two or three smaller streams, but the smaller streams and only one did not.

My original thought was not correct. My new thought is that that the water will almost always merge back together.

River Formation

In my 9th grade science class, we are working on the formation of rivers. Are teacher asked us to perform two experiments on river formation. My group chose to experiment underground springs and lake overflow these were the results

Experiment 1-Underground Springs

How to Test It-Using plastic pipping and the soil provided to us we elevated the container because rivers go down hill and, put the pipping under the soil, and connected the pipping to the faucet to create the illusion of an underground spring.

Hypotheseis-I think the water will pass through the pebbles and just become a lake at the bottom because the pebbles have enough space for water to pass through, and i think the sand and diatomaceous earth would form rivers and a lake at the bottom.

Diatomaceuos Earth- The earth made two rivers then at the bottom of the container since its elevated it made a "lake" at the bottom of the container.

Pebbles- The water didnt form any stream, instead it went under the rocks because there is enough space for water to pass through. It created a "lake" at the bottom of the container.

Sand- The water created two streams and created a "lake" at the bottom of the container.

Conclusion-I can conclude that our experiment was successful. We repeated the process of digging a hole for the tubing, packing the soil over the tubing and turn on the water and seeing what happens. From our results we can conclude that the earth and the sand make rivers and the pebbles only make a lake at the bottom.

Experiment 2- Lake Overflow

How To Test It- To create a "lake" we made a pile of the soil and made a hole in that pile to create the illusion of a lake. Then we poured water into the "lake" seeing if the water would force a opening in the "lake" making a "river"

Hypothesis- I think that the pebbles will not create a opening for water to pass through and make a river. I think the sand and the earth will make openings for water to pass through and make a river.

Diatomaceous Earth-when pouring the water into the "lake" the earth made a opening in the "lake" making a "river" going down hill.

Pebbles- In didnt even make a lake the water just passes through the pebbles.

Sand-The "lake" made a opening allowing it to make a river.

Conclusion- In my opinion i dont think this was a good experiment. We didnt elevate the container and rivers flow down hill so it was not accurate on what would actually happen. The experiment was a fail. In conclusion of our results to this experiment, the pebbles didnt even make a river when you pour the water in the "lake". The sand and earth made a opening for a river though.

Slope Formation

Slope Formation:

Hypothesis- Our hypothesis was the higher the slope, the more erosion that occurred would form a river.

Procedure- We mixed the diatomaceous earth in its' tub. Then we soaked up all its' liquid, and then we took a cup full of water and poured it on the diatomaceous earth. Once we did that we noticed the erosion, of moving the diatomaceous earth to a different spot, from the pressure of the water. After doing that we emptied the liquid out of the tub, and repeated the process again.

Conclusion- Our conclusion was the higher the slope the more erosion, which formed a river, and our hypothesis was correct.

River Expeirements

In my 9th grade class my group did an experiment with Diatomaceous earth. We raised the container and ran water down it to make a river with an erosion. Then we used sand, and also raised it up too, and made a dam in the sand and used foam to stop the water. We made it work with just little water going through the foam. In my hypothesis, i thought that the foam wouldn't work and that the water would soak through it. My hypothesis was incorrect, cause the water did not soak through it, it went under it.