Weeks 4 and 5 Energy Transfer and Transformation
Task 1 Complete Text Work
o Science Aspects 1 Focus 3.2 Complete Questions 1 to 9 Energy Transfer
o Science Aspects 1 Focus 3.3 Complete Questions 1 to 9 Energy Transformation
o Science Aspects 1 Focus 3.3 Complete Questions 1 to 9 Energy Transformation
Task 2 Energy Transformation and Transfer
- The Polar Bear (Ursus maritimus) is a mammal. List the adaptations that are common to all mammals.
- One adaptation that is common to all mammals is that they maintain a constant body temperature even though their environmental temperature changes. Draw a flow chart to show how chemical potential energy from food is transformed into heat energy in the mammal body.
- Heat is transferred from regions which are hotter to regions that are cooler. Show on the image all of the places that heat is lost from the polar bear body. The arrow indicates the direction of heat flow.
- Different environmental conditions call for different methods of heat transfer. List the three different ways that heat may be transferred from regions of high heat to regions of low heat. Define each of these four methods of heat transfer.
- Label the arrows on the polar bears with the four different methods of heat transfer.
- Adaptations to heat transfer may be classified into three types;
- Structural adaptation - physical features of an organism
- Physiological adaptation - permits the organism to perform special internal functions
- Behavioural adaptation - inherited behaviour chains and/or the ability to learn.
If you are absent from class download the file below, save and complete it.
3.2_3.3_polar_bear_energy.docx | |
File Size: | 563 kb |
File Type: | docx |
Radiation - Infra-red
Thermographic cameras detect radiation in the infrared range of the electromagnetic spectrum (roughly 9,000–14,000 nanometers or 9–14 µm) and produce images of that radiation, called thermograms. (https://en.wikipedia.org/wiki/Thermography)
What do the colours on the images represent?
For each image explain what the colours are showing.
Find one more thermogram that is interesting to you and explain why it is interesting.
What do the colours on the images represent?
For each image explain what the colours are showing.
Find one more thermogram that is interesting to you and explain why it is interesting.
Thermograms
Conduction.
Describe the changes in the image below.
Explain these changes using the terms; conductor, insulator.
Explain these changes using the Kinetic Particle model of matter.
Explain these changes using the terms; conductor, insulator.
Explain these changes using the Kinetic Particle model of matter.
Temperature
Explain the meaning of temperature.
Task 3 Does size matter in relation to heat transfer?
Does colour of the surface matter in relation to heat transfer?
In your white laboratory books plan, conduct, gather data and evaluate an investigation to answer on of the problems above. You can complete this on Monday.