| |
| More
scientists at work |
|
Experimenting
with Heat |
|
Taking readings and recording results
|
Today we did an experiment with Mr. Crowley. It
was really good. I was in a group with Edmund and Peter.We had
9 different containers and we had to find out which was the
best to keep water warm. The containers were a china cup,a tin
can,a paper cup,a PVC cup,a PET cup(these are plastic cups), a
flask cover,a drinking glass,a polystyrene cup,a styrofoam cup
and and an enamel mug.It had to be a fair test. We kept 2
things the same. We used the same volume of water-125ml- and
the same type of Spirit thermometer. The only thing to be
changed was the container used.
Mr.Crowley had the hot water in a flask. We took a temperature
reading straight away and then after 5 minutes. We made sure
to take the reading when the spirit stopped rising. We found
that the PVC cup had the highest reading at 56°C after 5
minutes.
Patrick L.in 5th Class |
|
Testing fot the best insulator
|
|
We did an experiment to find out which was the
best insulator.We used cotton wool,tin foil,bubble wrap and
left one tin unwrapped. This was the control.We put the hot
water into the cans. We put the same volume in
each-125millitres. Then we got our thermometers and we tested
staright away. We took the temperature readings. Then after 10
minutes we took a second reading and the readings were much
lower than the first reading.Cotton wool was the best
insulator out of the four naterials we used as it kept the
water warmest.These are the results. |
| Material |
Time 0 |
Temp |
Time10 |
Temp |
| Tinfoil |
0 |
61°C |
10 |
46°C |
| Bubble Wrap |
0 |
60°C |
10 |
48°C |
| Cotton Wool |
0 |
61°C |
10 |
49°C |
| Unwrapped can |
0 |
60°C |
10 |
44°C |
|
by Rory O'H.(5th Class)
|
Pinhole
Camera |
|
Laurence and David
|
We made a pinhole camera. First we got a toilet tube from
home.Then we got tinfoil and put it on one end of the tube.Next we put
tracing paper on the other end. We put an elastic band around both ends.
Then we wrapped it in black sugar paper.We put a small hole in the tinfoil
with a needle.We lit a candle and looked through the camera and the
flame was upside down.
David G. (4th class Sept.03) |
|
Please
return to Pupils' Work |
|
|
