Aiden Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Energy, Exercise 3: Exercise 3
Aiden Gill Science Solutions for Exercise - Aiden Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Energy, Exercise 3: Exercise 3
Attempt the practice questions on Chapter 11: Energy, Exercise 3: Exercise 3 with hints and solutions to strengthen your understanding. Cambridge Lower Secondary Science Stage 9: Workbook solutions are prepared by Experienced Embibe Experts.
Questions from Aiden Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Energy, Exercise 3: Exercise 3 with Hints & Solutions
The figure below shows the inside of an electric kettle.
The kettle heats the water at the bottom. Name the process by which the hotter air moves around the kettle.
The figure below shows the inside of an electric kettle.
Draw arrows on the diagram to show the directions in which the water moves as it heats up.
Modern office buildings use large amounts of glass to make the room more brightly lit. The glass has a special coating so that the outer surface is shiny but still allows visible light through the glass.
A room with a large amount of glass can get very hot. What is the process by which heat enters the room?
Modern office buildings use large amounts of glass to make the room more brightly lit. The glass has a special coating so that the outer surface is shiny but still allows visible light through the glass.
State the source of this thermal energy.
Modern office buildings use large amounts of glass to make the room more brightly lit. The glass has a special coating so that the outer surface is shiny but still allows visible light through the glass.
Explain why the outer surface of modern office glass has a special coating.
The figure below shows a pan used for cooking.
Explain the three labelled features of the pan in terms of how they affect thermal energy transfer.
In hot weather, your skin sweats. It produces water that rests on the surface of your skin.
Use your knowledge of heat transfers to explain why sweating helps your body to cool down.
In hot weather, your skin sweats. It produces water that rests on the surface of your skin.
If you direct a stream of air over your skin, it can help your body to cool further still. Explain why this happens.
