It is week 8 and tomorrow, you begin your first paper. All the best for your Mathematics and please do well. For those who are struggling with the subject, make sure you pass the subject. Have faith and self belief. Highlight key words and do not rely too much on the calculator. Remember to work on your mental calculation and manual calculation.
A recap of today's learning points:
- We focused on Science, finishing up the corrections and going through of the Energy practice paper.
- Tomorrow, we will focus on Situational Writing and Synthesis and Transformation for English Paper on Wednesday.
We learnt about energy loss today as part of our new concept/knowledge. Here is a recap of energy loss. Energy loss occurs when excess forms of energy is being converted into besides the main source of energy.
Example 1:
The main function of a lightbulb is to light up, thus the main energy is light energy. However, the electrical energy is converted into light energy + heat energy. As a result, the heat energy is taking away percentages of energy from the light energy. Energy is lost here in the form of heat energy.
Example 2:
The main function of a vacuum cleaner is to use the suction power of the machine to get rid of dirt. Electrical energy (from the socket) is converted into sound energy + heat energy + kinetic energy. The main form of energy needed is the kinetic energy. But, energy is lost during the conversion in the form of sound energy + heat energy.
Concept:
Energy can be lost during energy conversions.
Reminders:
- Sign the parents' acknowledgement for the heritage tour
- those who have not passed up the files and science revision worksheet to submit tomorrow
Thank you,
Sincerely,
Mr Nelson Ong
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