Pressure

Marshmallows making funny faces

Marshmallows making funny faces With this experiment we'll cause marshmallows to make funny faces and demonstrate a scien-terrific principle called pressure. Draw a face on both ends of a large marshmallow (the flat end). Draw 'em to look like Dad if possible - it'll make the experiment much more humorous. Drop the marshmallow into a glass bottle. You'll have to make sure and use a bottle that has a opening slightly larger than the marshmallow. Take the straw and wrap the clay about 1 inch from the end in such a manner that the clay forms a 'ring' around the straw. Place the short end of the straw into the bottle. The clay should stop the straw from dropping all the way into the bottle.…
Tell me more Reeko! »
Pressure

Extracting life from a plant

Extracting life from a plant Plants are living creatures just like Dad (OK, so plants are a little smarter). Plants need food and water just like people. But how do plants get food? Plants get their nutrients via the water they take in. Nutrients from the soil get mixed up with the ground water. The plant takes in the ground water with the sneaky nutrients concealed inside. OK Reeko, so how do plants take in water, I've never seen them slurping it up with a straw? This experiment should shed some light on this question. Fill the bottle with water. Take a freshly cut leaf or flower, wrap clay around the stem and place the stem into the bottle. Make sure the clay fits snugly…
Tell me more Reeko! »
Pressure

Can we please lower the pressure in here?

Can we please lower the pressure in here? Named after Daniel Bernoulli, the Bernoulli Principle states that as the velocity of a fluid increases, a decrease in pressure occurs. The mathematician Daniel discovered many new ideas regarding fluids and pressure. For instance, Bernoulli, who had earlier begun to study medicine, wanted to know about the relationship between the rate of blood flow and its pressure. He poked a hole in a pipe and stuck a straw in it and noticed that when the fluid sped up, the liquid rose higher in the straw. Soon doctors all over Europe were poking holes in patient’s arms and sticking little glass tubes in them to test their blood pressure. Ouch! This practice continued for nearly 200 years until…
Tell me more Reeko! »
Pressure

A sucker’s bet – atmospheric pressure experiment

A sucker's bet Funny how we take every-day activities for granted. Take for instance - sucking through a straw. Have you ever stopped to think about how we are able to suck liquids through a straw. What exactly makes the liquid climb up the straw and into our mouths. Well, I know you're just itching to know so here we Fill the jar with water. Poke a hole in the lid just big enough for the straw to fit through. Put the straw through the hole. Seal the hole with clay. Make sure it is sealed tight! Try to suck water through the straw. What happens? When you drink from an open glass of water, air pressure allows the water to travel up the straw.…
Tell me more Reeko! »
Atomic/Electric

Magical Attracting Tape

Magical Attracting Tape In this experiment we will magically force electrons from Scotch Tape to pass to and from a table (note - we'd use Dad in this experiment but you know how stingy Dad is with things like, Ohhh, his tools for instance.  So if you think Dad's stingy with tools try asking him if you can transfer some of his ).  Of course, you won't be able to actually see the electrons transfer but you will definitely see the affects of the hopping electrons.  The device we will create can further be used to test the charge of any object you want. Fill the 2 film cans about 3/4 full of clay. Place 2 straws, side by side, in each of the film…
Tell me more Reeko! »