OOBLECK
Oobleck is made of only these two ingredients
Cornstarch and Water
Oil always floats on water because it has less of this property
Density
There are 3 types of fingerprints — name all 3
Loops, Whorls, Arches
What is density
How much stuff or mass is packed into a space
True or False: Oil sinks to the bottom of water
False — oil always floats on top
When you punch oobleck hard it acts like this
A solid
This tablet we dropped in created CO2 bubbles that carried the water up through the oil
Alka Seltzer
This is the most common type of fingerprint — about 60-65% of people have it
Loops
What is Non-Newtonian Fluid
A fluid that doesn't follow normal liquid rules like oobleck
True or False: Oobleck is solid AND liquid at the same time
When you move slowly through oobleck it acts like this
A liquid
Oil and water never mix because their molecules are structured differently — water molecules do this to oil molecules
Repel them / push them out
This is the rarest type of fingerprint — only 5% of people have it
Arches
The science of solving crimes using physical evidence like fingerprints
True or False: Everyone in the world has different fingerprints
True
What is a non-Newtonian fluid
something that is liquid and solid
When the CO2 bubbles popped at the top of the lava lamp the colored water did this
Sank back down
We used pencil graphite and this to lift fingerprints — the same basic method real forensic teams use
Clear Tape
CO2 bubbles in the lava lamp carried water through the oil — what force brought the water back down
gravity
True or False: Identical twins have the same fingerprints
False — even identical twins have different fingerprints
Scientists are designing body armor using this same concept as oobleck — what is the material called
Shear Thickening Fluid
Submarines go up and down underwater by changing this — the same property that makes our lava lamp work
Density / using ballast tanks
Even these two people who look exactly alike still have different fingerprints
Identical Twins
The name for the patterns magnetic field lines make around a magnet — we saw a version of this with magnetic sand
Magnetic Field Lines
True or False: Ketchup is also a non-Newtonian fluid just like oobleck
True — that is why it flows easier when you shake it