Discovery Express
  • Welcome!
  • Blog
  • Ask Dr. E!
  • Check out our store!
  • 9 Apples Math Game
  • Your questions answered!
  • Events and Announcements
  • About/Contact

Oil spill cleanup!

11/8/2015

1 Comment

 
Author: Maddie Van Beek

You may have heard the saying “oil and water don’t mix.” It’s true! If you’ve never seen oil and water together in the same container, you will soon! The reason oil and water don’t mix is because they have different densities. Oil is less dense than water, which means that it weighs less. Because water is more dense, it sinks to the bottom of the container. Because oil is less dense, it will always float to the surface of the water.
​
Test it out!

Fill an empty water bottle about three-fourths full with water. Add about a half-cup of oil to the bottle. What happens? The oil just sits right on the surface. Tip the bottle upside-down. The oil rises to the top and the water sinks to the bottom. What do you think will happen when you shake up the bottle? Try it out! It may look like the oil and water have mixed, but it’s only temporary. You probably see that the bottle looks to be filled with a bunch of bubbles. This is the oil broken up by the vigorous shaking. Eventually, all the oil will rise back to the top.


We took this demonstration a step further a few weeks ago when we made our own lava lamps out of colored water and vegetable oil: http://discoveryexpress.weebly.com/blog/make-your-own-lava-lamp.


You just saw a small example of how oil is insoluble in water. Insoluble means that the oil does not dissolve or mix in with water. Why would this matter in real life? Oil is a commodity that is always being shipped across the ocean to different areas. Sometimes, there are mistakes and oil is spilled into the ocean, possibly because of a leak in an oil tanker. Why would this matter? While oil sits on top of the water because it’s insoluble, it is extremely difficult to remove from the water. That’s what we are going to focus on today!


Check out this link to learn more about oil spills and why they are a BIG DEAL: http://www.kidzworld.com/article/24170-oil-spills-sad-but-true


How do we deal with oil spills? Read this article about how oil is removed from water: http://www.livescience.com/32524-how-are-oil-spills-cleaned.html


The question of the day: What is the most effective way to remove oil from water? In this experiment, you will use different materials to act as surface skimmers, the first of the four oil spill cleanup methods you just read about on livescience.com.


YOU WILL NEED:
  • Water
  • Vegetable oil
  • Clear container
  • Dry-erase marker
  • Tools: Cotton balls, gauze, polypropylene cloth


Here’s what to do!
1. Fill your clear container half full with water.
2. Add vegetable oil to the container of water until you have at least a half-inch layer of oil sitting on the top. This is your oil slick.
3. Use a dry-erase marker to mark the where the surface of the oil is. This is your reference point to see how much oil you can remove with your materials.
4. Make a prediction about which tool will work best for removing the oil from the water. Why do you think this will work the best?
5. Make a chart to record your observations. It may look something like this:
Picture
6. Test out each material individually and record your observations in your table. Try to remove all the oil with the cotton balls. Is it possible? How long does it take? Stop after 10 minutes and see where you’re at. Look at the reference point to see how much oil you were able to remove. 

7. Add more oil to the container until the level is the same as it was before you used the cotton balls. Now, test out the polypropylene cloth. How effective is this material? Does it take more or less time to remove the oil? Were you able to remove more oil? 


8. Last, try out the gauze. Record your observations as you did with the first two materials. 


​9. Draw conclusions and record your final thoughts. Which tool worked the best to remove the oil?  


Extension: You’ve tried removing oil from water, but sometimes when oil spills occur, the oil that spilled in the ocean makes it to shore and coats the sand. How difficult is it to remove oil from sand? Will the same techniques work? Fill a cup with sand and then dump half a cup of vegetable oil into it. Use a spoon to stir the oil into the sand until its well blended. Now, test all the methods out to see how much oil you can remove. You could even try to use soap! Which method was most effective in removing the oil from the sand? 


References: 
  • http://www.funology.com/oil-spill-clean-it-up/
  • http://weirdsciencekids.com/Oilspillexperiment.html
  • http://www.mmaiche.org/Experiments/OilSpill.pdf
1 Comment
Cheap Essay Writing Service link
10/16/2020 11:16:11 pm

While prevention seems to not fit, it's a crucial part. Oil spills or leaks can happen on little scale, but if you've got created a back-up system of containment, the leaking oil won't have an opportunity to flee into the environment. Finally, the oil must be cleaned up. this suggests that it'll be absorbed in how and removed. There are a good range of tools available to wash up oil spills, including a spread of absorbents. during a ll|one among|one in every of one among the key tools for an oil spill cleanup in a large body of water are going to be oil absorbent booms. they will absorb a powerful amount of water, while repelling water. Once they're full, they will be pulled out and get replaced with fresh booms until all the oil is absorbed.

Reply

Your comment will be posted after it is approved.


Leave a Reply.

    Follow us on Pinterest!
    Picture
    Check out our new game for math education, grades 1-7!

    Archives

    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014
    June 2014
    May 2014
    April 2014
    March 2014
    February 2014
    January 2014

      Tell us what interests you most, and we'll send you a free PDF of a lesson in that subject!

    Submit

    Categories

    All
    Age 10 12
    Age 12 14
    Age 14 16
    Age 16+
    Age 8 10
    Anatomy/Physiology
    Biology
    Chemistry
    Engineering
    Food Science
    Geology/Earth Science
    Health Science
    Math
    Microbiology
    Physics
    Plant Science
    Psychology
    Weather Science

Proudly powered by Weebly