This is the original source. Aristo Educational Press provides a password-protected section. Your science teacher has access to the complete marking scheme. Politely ask your teacher if they can:

"Energy is transferred from the hot coffee (higher temperature) to the surrounding air particles (lower temperature) via conduction and convection . The average kinetic energy of the coffee particles decreases, causing the temperature to drop." (3 marks – keywords underlined)

Examples include electrical, light, thermal, sound, kinetic, chemical, and potential energy.

You have the assignment book and you have found the answers. Now, maximize your results:

Look for the ISBN matching your exact assignment book version (e.g., 978-962-1234-56-7). Do not buy the teacher's edition without permission.

The 1B assignment book is structured to challenge students across three primary scientific domains: