1. DATA LOGGING

2. GROUP MEMBERS
NURHAYATI AMIRUDIN
NOR HAFIZAH ISMAIL
SITI NURHAFIZA
MUHAMMAD NAWI

3. INTRODUCTION
The concept of heat transfer and the
various mechanisms that result in
heat transfer:
• a) Conduction
• b) Convection
• c) Radiation

4. ENGAGE
I can remember as a kid having one dull black
thermos bottle that came with my lunch box. One
day my mother might put grape juice in it and at
lunch, I would have nice, cold grape juice. The next
day she would put hot soup in it and I would have
hot soup for lunch. Moreover, I can remember
asking, "How does it know whether to keep stuff hot
or cold?" Where's the switch, in other words,
similarly, "You heat things up in an oven and cool
them down in a refrigerator. How come this thing
can do both?"

5. QUESTION
 How the thermos bottles keep the food
warm and cool?
 How a thermos bottle prevents heat transfer
to the outside by using a vacuum between
the walls of the bottle?
 What is a link between the colour of the flask
and how quickly the heat was lost?
 Why one coloured flask cooled more quickly
than another did?
 What made up the wall of the flask?

6. EMPOWER
Objective: To investigate
how colour can affect
the heat lost through
radiation.
Hypothesis: Black
colour absorbed more
heat than light colour.
The light colour
reflect more heat.

7. Equipment required:
- DrDAQ data logger connected to a PC
-Two external temperature probes (DD100)
-One 250 ml conical flask painted black and one with silver
foil around it
-A kettle or other resource to boil water
-Two pieces of insulating material to place over the top of
the flasks be (these will have to be made with a small hole
to let the temperature probe into the flask)
-Two clamp stands

8. Experiment Procedure
• Both the conical flasks is filled with boiling
water
• The insulating covers is placed over the top of
the flask
• The temperature probes is placed in the flasks
• The temperatures of the flasks is started
recording(15 minutes should be long enough)

9. RESULT

10. ENHANCE
Planning a further experiment.
These questions below help us to find the solution
how to improve this product to be more attractive
and funky.
 Can you design an experiment to discover if
different coloured flasks full of water would heat up
more quickly than others would? Show your
teachers your design
 Why was an insulating cover placed over the top of
the flask?

11. EXTENSION
Example of Greenhouse Plant
-Light from the sun passes through the roof of the
greenhouse to heat the plants and ground inside.
-Once the solar radiation reaches the surface of the earth,
the greenhouse structure is the next obstacles it has to
pass through.
-The roof and wall are usually opaque and absorb or reflect
of the light.
-A greenhouse is build with the glass walls and glass roof.
- It allow a visible light to enter unhindered, where it
warms the interior as it is absorbed by the material
within.