Name:___________________________________ Grade & Sec.:_______________ Score:__________
Teacher:_________________________________ Date:______________________ Rating:_________
Activity 1
Explaining hotness or coldness
This first activity deals with one of the major effects of heat transfer, which is temperature
change. You will describe the hotness or coldness of an object in terms of its temperature. You
will also compare the changes in the temperature of water to determine the relationship between
the amount of heat transferred and the resulting temperature change.
Materials Needed:
3 identical containers
thermometer
hot water
tap water (room temperature)
cold water
Procedure:
1. Half-fill the three containers with equal amount of cold water. Arrange them next to one
another as shown in Figure 1 below.
2. Place your finger for a while into any of the containers. Try to recall your lesson on Heat
Transfer in Grade 7 and answer the following questions:
Q1. What actually transferred when you dipped your finger into the water? In what direction
did it transfer?
Q2. Was the water ‘hot’ or ‘cold’? Explain.
Discuss your answers with the group. Try to estimate the temperature of the water in the
containers.
3. Measure with a thermometer the temperature of the water in each container. Record your
measurements in Table 1 below. (Note: The initial temperature of the water in each
container should be the same as they come from the same source.)