Speed up geologic time | Squeeze Box – Science Snack Activity
Speed up geologic time | Squeeze Box – Science Snack Activity

What do you think it would be like if
you are the earth experiencing compressional forces ? Well you can find
out with a Squeeze box, a snack by the Exploratorium Teacher Institute. Hi, my name is Eric Muller of the Exploratorium Teacher Institute and i’m going to show you how to build a Squeeze box. You’re gonna need some safety goggles about three feet of two-by-fours two pieces that are seven inches long, one piece that is five-and-a-half inches long and one piece that is twelve inches long some sandpaper, you’re gonna need a saw, a ruler, pencil, masking tape, an impact driver or a drill, a spade bit or a Forstner bit that’s a diameter of seven eight inches, a Phillips head screwdriver that you could put in your drill, six
wood screws that are about two and a half inches long , 22 wood screws that are about three quarters of an inch long and 22 washers. You’re gonna need some
plastic and I highly recommend getting your plastic cut to the right
measurements by the person you buy it from. The dimensions are gonna need are fourteen inches by six and a half inches for two plastic sheets. A wood clamp, a
piece of PVC that’s cut to about 11inches. I highly recommend getting a
variety of sediments, such as baking soda or flour or salt or even such things
as coffee just to kind of give it more color. What you do have to get is several
pounds or kilograms of sand. After you’ve cut your pieces now you need to join the seven inch pieces to the 12 inch piece to make the frame. Make sure that when
you do it, all the pieces are flush. To build your rammer you’re gonna have to make sure you drill directly in the center of the five and a half inch piece.
It also needs to pass through the seven inch side. Make sure you measure
accordingly. When you drill you’re gonna have to drill all the way through the
seven inch piece and only halfway through into the five and a half inch
piece. Sand the edges of your wooden rammer sixteenth of an inch to an eighth
of an inch you have a power sander I recommend
using that. To make the handle on your rammer, wrap the end of your piece of PVC with some masking tape. Make sure it fits nice and snugly and make sure the piece of PVC passes through the frame. Now it’s time to mount the windows on your Squeeze box . What I recommend is drilling through the plastic but you’re gonna
need a plastic bit I recommend putting 11 screws with washers around the edge
of the window. Make sure that your windows fit nice and flush . Now you’re
ready to start squeezing. So it’s time to use your Squeeze box. What we’re gonna do is we’re gonna fill up our Squeeze box with several layers of sediments. These
will represent sediments that were laid down flat in an ocean environment or a
lake environment. Most sediments are laid down flat and then we’re gonna deform
them. So what we’re gonna do is we’re gonna start layering our Squeeze box and
the first layer of sand should be several centimeters thick. So now that I
have one layer down I’m gonna add a different layer down. It’s really
important that when you put your layers down do you make sure they’re exposed in
the window because that’s what you’re going to see I’m gonna put another layer
of sand just to let you know probably three maybe four layers is probably good
also what’s really important is to make sure you don’t go above about halfway in
your Squeeze box with your layering so there’s my third layer and that one is
of sand representing another sedimentation event and now I’m gonna
put you know what I’m gonna put another layer of baking soda. Let’s put a layer
of coffee in there, it doesn’t matter what the layers are is long as you can
see that the layers are different make sure the layers lay down flat and I’m gonna top this off with one more layer of sand Now it’s time to squeeze so what I’m
gonna do is I’m gonna slowly squeeze this and I’m gonna take observations as
I squeeze to see what’s happening to the sediments in the Squeeze box.
So these compressional forces will smash them together and let’s see how they
react okay So on this side I see some reverse
faults starting, let me see what’s on the other side…. yeah there’s a reverse faults
right over here. So the sediments are actually going over each other that’s
one way that they can react. We have another series…we have
another reverse fault on my side let’s see what’s coming on your side too.
Yeah So these sediment layers are making this
gorgeous type of formations. So you might want to try this again and you might want to try different materials, maybe salt, maybe flour, maybe corn starch, maybe something else will give it different results. Maybe if one of the layers is
moist or all the layers are moist maybe you’ll get a different result too. So you might be saying well so what’s going on here ? So it turns out when these flat layers undergo compressional forces they have to respond one way or the other and
on earth there’s two main ways they respond, either by faulting -where one of
them will crack and go above the other one usually in a thrust or reverse fault
formation or they fold and either they fold up or they fold down this is called
an anticline and this is called a syncline and you might get one or both
of those events happening on your Squeeze box. These compressional features
might take thousands to even millions of years to make but you could do it in
just a few minutes so go ahead play with your Squeeze box see what develops and
see what might be going on underneath your feet.

2 thoughts on “Speed up geologic time | Squeeze Box – Science Snack Activity”

  1. The Gayest Person on YouTube says:

    A very simple way to communicate a complex idea!

  2. Pak Science Club says:


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