C and R learned a few things about fingerprints this week:
- no two people have the same fingerprints
- fingerprints give our fingers the rough surface we need to create friction that allows us to pick up something like a pencil or a baseball bat
- fingerprints are used to identify people
- we had our fingerprints before we were born
- fingerprints can last for years on an object
We tried to look at our own fingerprints. We pressed our fingers into an ink pad and then rolled each finger from left to right to create prints on paper. Then we observed the prints with our super huge magnifying glass.
I was hoping we would be able to see the fingerprints better. The type of ink pad we used is not meant for fingerprinting, so our prints were not very clear. It was still fun and interesting. I plan on redoing this with the right type of ink pad. It would be fun to identify the type of fingerprints we each have if we can see the arches better.
I am linking this to Science Sunday at Adventures in Mommydom.
7 comments:
What a cool magnifying glass! If you make a patch of pencil graphite on a piece of paper and then put your finger first in it and then on a piece of tape you can usually get a nice clear finger print. At least last time I tried, years ago - so hopefully I'm remembering the process correctly!
That was great!
I love love love your super big magnifying glass!
I was thinking about doing fingerprints this week too! Because we were reading about Zebras, and it explained that no two zebras stripes are exactly the same, like fingerprints. Do you guys enjoy the Ed Emberley fingerprint books? you probably said when we posted about them, but I've forgotten (pregnancy brain!).
Fingerprints are really fun! One of Anna's favorite science books is called "Your Skin and Mine" - there is a similar finger printing experiment there. Love your super glass!
That is a cool magnifying glass.
Love this -- and that magnifying glass is awesome!!
Great idea! My boys would love to do this.
Post a Comment