Science Experiment - Help PLEASE!!! I really need someone's help with this!?

Question

Okay, first of all, I want to say thanks for reading this question, and answering it. Now here's the problem. My science teacher wants us to: Design an experiment to solve the following problem. Include the following: problem statement, hypothesis, variables, a procedure, table or chart or graph, and your conclusion. Problem: You have a mixture of sand, water, and gravel. How can you seperate this mixture into different parts?

I don't get how I am supposed to do this experiment. Where do I get sand and gravel? How do I go about seperating them? What do I do for this experiment? Someone please help me! I really appreciate it! The person who helps the best will recieve ten points. Please, please, please, help, I beg of you!!!

Also, can anyone help me get pictures of this experiment online? Like of the sand, the water, and the gravel in a jar...If not, I'll just try and look for it myself, but the important thing is that you help me answer the question above. Please and thanks, I really appreciate it! :)

Answer 1

she is trying to get you to understand properties of different objects. the sand can be sifted through the gravel with large mesh by pouring water over it...the water can then be sifted out by puring the sand into an even finer mesh....in the end water it the ultimate changer of form....in other words a filtration process.

Answer 2

Sand and gravel can be purchased at a Home Depot or even Wal-Mart.

Hopefully you can come up with the problem statement, hypothesis, variables, and the like.

For separation, mix them all together. Then, my best solution would be to put it all into an old pan and boil most of the water off, then take it off the heat until it dries the rest of the way. Stir it up again to loosen the sand from the gravel and pour through a sieve (strainer). The sand will fall through. Collect it and youll have the gravel in the sieve. I hope your conclusion matches your hypothesis. If it doesn't, there's something wrong with your scientific thought process.

Answer 3

Hi there, I found some websites that might help you.

How Does Water Carry Particles Of Rock And Soil?
Mix some gravel, sand, mud, silt, and clay in a large jar. Add water to the jar. Cover the jar with the lid; then shake the jar vigorously. Have students observe the jar over a period of time and note how long it takes for the different materials to settle on the bottom. Do they see different layers on the bottom? What is different about them? Have students think about different kinds of streams and rivers. Where would they expect to find a rocky or gravel bottom? Where would there be a muddy or silty bottom? Which type of material might be carried for the longest distance? (The smaller particles remain in suspension in the water for the longest time. They have a larger ratio of surface area to mass and therefore experience more resistance from the water as they sink.)

Glacier Melt

You Need:

a small cup or yogurt container
sand
small rocks or pebbles
water
freezer
piece of board, to make a slant or incline
hammer and nail
a thick rubber band
watch

What to Do:
Place a one inch layer of sand and gravel in the cup, followed by a few inches of water. Place it in the freezer. When frozen solid, repeat the process, adding sand, gravel, and water, then freezing. The cup should be filled to the top.
Next, carefully hammer a nail part way into the middle of one end of the board. Place that end against something immovable to form an incline or slant. Now you are ready.
Remove your model glacier from the freezer. Warm the sides of the container under warm tap water just enough to get your model glacier to slide down when tapped. With the rock/sand side down, place the glacier at the top of the incline and fasten the rubber band around its middle and around the nail. How long will it take your glacier to melt, move and leave rock and sand deposits? Time it.

What Happens:

Depending on the weather, melting should begin immediately, even on cooler days. Rock and sand deposits will fall off in clumps, some will slide down the board, while other separate bits amd pieces will form along the board surface in strange patterns, much like moraine or glacial matter.

Answer 4

Okay...you do not need to get the sand and gravel...it is a hypothetical situation. My prediction is that you will do the experiment in class tomorrow or Monday.

Problem Statement: How do I separate sand, gravel and water?

Hypothesis: I think I can separate them using my knowledge that they have different densities.

Variables: Using different materials such as water, vegetable oil, syrup, etc. to try to let them be separated by using density differentiation.

Procedure:

1. Get supplies: Sand, Gravel, Water, Syrup, and Vegetable oil.

2. Fill a glass or beaker with 200 mL of water

3. Repeat step 2 with Vegetable oil and syrup

4. Put the mixture of water sand and gravel into each glass and observe.

----What should happen is that these objects will separate. DO NOT COPY THIS WORD FOR WORD (that is called plagarism) add your own variables and make the procedure longer...

Table: drawings or efficiency of separation

Answer 5

ok. getting it. sand, the beach of course.!! the gravel. go to a construction site. around the sidewalk, there's some.


when you say separating, do you mean grouping?

or put it together and separate it?

if so. .

put it in a jar and take your hand and cover the opening, but not all the way. pour into something, then, wait for the sand to dry. get a filter with small holes. The sand should go out,

There you are! For the problem statement, hypothesis, variables, a procedure, table, and conclusion, you have to do yourself. I didn't do the experiment.. YOU DID!!

Good luck!

Answer 6

To separate these three items you will need wire mesh filters of different grades. One with large openings to catch the gravel and let the sand and water pass through. Then a second, finer one to filter the sand from the water.

For the scientific method, see: http://teacher.pas.rochester.edu/phy_labs/AppendixE/AppendixE.html

Answer 7

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