Can air lift people?
Tuesday in science we did a new fun experiment! I love the
breaks in our lectures when we are able to do some hands on learning. Today we
were testing whether air can lift heavy things. We blew up 4 balloons, put them
under a table upside down, then saw how many people can stand on the table!
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yes somehow there are still balloons not popped under this table! So YES it can! |
What happens to a gingerbread man in the water?
The ginger break man initially floats. It will expand as it
absorbs water and then begin to sink. As it loses its color and the water
becomes yellow, the cookie becomes less dense and rises back to the top of the
water.
How about an M&M?
The color spreads throughout the water and then the white
candy shell disperses eventually leaving just the chocolate in the midst of
colored water.
Cookies = a chemical change in science
Well first off what is a chemical change? It is producing
one or more new substances; in this case it is through absorption of energy
through heat. We had the opportunity this morning to teach to science to our
group of 4 in class. In order to teach to NZ curriculum I taught to objectives
L 1-4 comparing the differences in physical and chemical change that occur when
materials are mixed, heated and cooled. Every ingredient serves s purpose for
how the cookies turn out. The sugar melts, crystallizing and browning, creating
the hard texture. The flour absorbs the liquid helping the cookie to keep its
structure or shape. The butter is necessary to allow the cookie to spread and
most importantly the baking powder that causes the cookies to rise. The baking
powder lets off CO2 in the heat, which creates those tiny air bubbles in
cookies. Well that is all the science lesson, not I will get to the fun!
No snickerdoodles?
So since they do not have snickerdoodles in New Zealand I
decided to bake some. Michael (my little host brother) and I began to make the
dough. (It was great because Michael bakes desserts about every night!) It’s
can be pretty tricky here because they use a metric measuring system, so either
I am not sure how much a measurement is, or I google a US recipe and don’t have
the conversions. Luckily they have measuring cups and spoons that worked to
follow the US recipe. We cooked about half the cookies last night and I saved
half the dough to bring to school today. The ovens heat up in Celsius, so I
found out I must use 180 degrees, not 350!
So the church building we meet in for school is pretty old
and the kitchen smells horrendous! We toughed it out though in order to get our
food made. We switched on the power supply to the circuit for the over, but
when we turned that oven dial, nothing happened! Can you believe that? The
stovetop worked, but the oven was done for! We decided since we are supposed to
be doing a science experiment we need to try to be resourceful. We searched
around for what we could possibly use in order to create an oven. All we had
was a roll of aluminum foil (no pans or trays), a plastic with cookie dough and
a plastic with cinnamon and sugar in it.
Little Burnt! |
While I was busy with the Microwave Amanda was busy building
an over on the stovetop. She pulled out the metal racks from the oven and paced
them over the stove, balancing on a hunk of brick and some bark! We used the
foil to make a bottom and also create a top to allow the heat to travel. We put
sticks around the side of the newly created over in order to keep the heat
within it.
These cookies took a little longer than 45 seconds and did require
flipping about half way through, but about 8 minutes later we had more cookies!
Science is amazing! These tasted a little more like the oven, but not the exact
same! Both were delicious. Some preferred the microwave ones, while others
liked the stovetop. I was so impressed how creative we could be! Yes I do not
think my major could be more fitting for me, I just love it!
Well tomorrow is the last day of school! I cannot believe
how the time has flown! I have already been here 24 days! That is crazy!
Tomorrow we will be headed to school with all our camping gear and all us girls
will be heading out to Cormandle just after school. I am so excited for camping
on the beach! We will be back Sunday night and take off at 5am Monday morning
for the South Island!
Oh and I am planning to do the half marathon February 25th!
I have been training like no other, endurance, speed, hill repeats, etc!
Hopefully that will help balance out all the treats I have been eating since I
got here! Wish me luck!