Pages

Tuesday, November 1, 2011

Erosion: A Flowing River

This is a good one to do outside, if you can swing it.  If not, it can be done inside, you'll just need to work harder to contain the water.

Materials:
--Paper cup
--Drinking straw
--Clay
-- Cookie sheet
--Loose soil or sand
--Jug filled with water (or other water source)

Prep Work:
Poke a hole in the side of the paper cup, near the bottom. 
Cut the straw in half and place one half in the hole.
Seal the hole, around the straw, with the clay.

For the Demonstration:
Lay the cookie sheet upside down on the ground and raise one end about 2 inches, using scrap wood, a brick, a pile of soil, whatever's convenient. 

Cover the cookie sheet with a thin layer of soil or sand. Place the cup at the raised end of the cookie sheet.

Hold your finger over the straw as you fill the cup with water. Remove your finger and watch the way path of the water.

Raise the end of the cookie sheet to about 6 inches, recover the sheet with soil and repeat.

What differences did the slope make in the erosion?

Cover the cookie sheet with a layer of soil again.  This time, place a small rock  in the soil in front of the straw. 

Fill the cup and watch what happens to the water as it encounters the rock.  You can place additional rocks along the way to change the direction of the river.

3 comments:

  1. Awesome erosion experiments! I have been looking for erosion experiments all over the web. Your site is super cool! I reposted a couple of your experiments over at my blog E is for Explore, if that's okay? I give your photo credit and link back to you. My site is basically cool stuff from around the web for kids to do. Your ideas are stellar!

    ReplyDelete
  2. I has suffered for Human papillomavirus HPV) for 2years, I was given some tablets at the hospital but I refused to take it, They said I have to be on it for life so I don't want take a drugs everyday for life. No point in taking medicine everyday when u won't get cure from it and I was advice to seek for natural herbal cure, after some time I found dr onokun is the most trustful herbalist that have herbs to cure wicked symptom's,I emailed dr onokun, for 2weeks been his patient he cured my (HPV) with his herbal. I only used his natural herbs for two weeks it was 100% cure. I'm not (HPV) patient anymore. I'm happy about it i finally got cured out of this mess been in my body for 2years. I also recommend you if you're living with (HPV) or herpes symptoms i also want you to be free contact dr onokun with the email attach to my post. Dronokunherbalcure@gmail.com

    ReplyDelete
  3. Can't still believe that i got cured from Genital Herpes through herbal treatment from Dr LUCKY  who I met through the internet, I actually couldn't believe it at first because it sounded impossible to me knowing how far I have gone just to get rid of it. Dr LUCKY send me his medicine which I took as instructed and here I am living a happy life once again, a big thanks to Dr LUCKY , I am sure there are many herbal doctors out there but Dr LUCKY did it for me, contact him on Email him; { drluckyherbalcure@gmail.com }  

    ReplyDelete

Note: Only a member of this blog may post a comment.