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Week 17 - Natural Sources, Heating Systems and Insulation

Week 17 - Natural Sources, Heating Systems and Insulation

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Course: Science 7 LearnNet
Book: Week 17 - Natural Sources, Heating Systems and Insulation
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Date: Thursday, 25 April 2019, 8:41 PM

Tab: Exercise 3.1


Lesson 3.1: Natural Sources of Thermal Energy


ACTIVITY A:



Required Readings

Science in Action 7
pages 222 to 226
or

Science Focus 7
pages 238 to 241


The Earth is a natural source of thermal energy. We see this when volcanoes erupt, geysers spew hot water, and thermal hot springs form.

The Sun is also a natural source of thermal energy. It can be used to actively or passively heat our homes and offices. With solar power collectors it can even power our homes.


Thermal energy can also be generated by taping into natural renewable resources such as wind energy and hydropower. Wind energy could be developed by using the power of the chinook winds that prevail in southern Alberta. The winds would be harnessed by using large fields of windmills. Solar power could be harnessed again on the prairies especially during the summer months when the temperatures are intense. Hydropower could be developed by using the waves coming towards the beaches on the west and eastern coasts of Canada.



Complete your textbook readings prior to doing the activity below.
Exercise 3.1: Natural Sources of Thermal Energy

Copyright © 2001, the Crown in Right of Alberta, as represented by the Minister of Learning, Alberta Learning, 11160 Jasper Avenue, Edmonton, Alberta T5K 0L2

Picture and Photos:( For specific picture reference view page source.)
Copyright © 2000-2001 www.arttoday.com, Copyright © 2001 Jeannie Charrois

Tab: Exercise 3.2


Lesson 3.2: Heating Systems Technologies


ACTIVITY A



Required Readings

Science in Action 7
pages 229 to 232
or

Science Focus 7
page 199

Technology in the home is very important to our well being. Heating systems are what provides the comfort within the shell we call a house. Without systems to send the heat throughout the building we would have a tendency to stay near the source of heat. One can think back to the cave man days when the fire was the only focal point within their community. We also use systems to provide further home comforts such as refrigeration and air conditioning. Heating systems help cook our food such as the stove, microwave oven and the toaster.

Exercise 3.2: Heating Technology

Copyright © 2001, the Crown in Right of Alberta, as represented by the Minister of Learning, Alberta Learning, 11160 Jasper Avenue, Edmonton, Alberta T5K 0L2

Picture and Photos:( For specific picture reference view page source.)
Copyright © 2000-2001 www.arttoday.com, Copyright © 2001 Jeannie Charrois

Tab: Exercise 3.3


Lesson 3.3: Heat Loss and Insulation




Insulation has been a very important component of civilization for thousands of years. There is a need for suitable clothing for hot or cold climates. Hot climate demands clothing that can be cool and breezy. Cold climates involve a need for clothing layers that will be comfortable but warm. Homes also have similar problems to the clothing aspect. In the tropics homes do not need the insulation provided at greater latitudes. The insulation in homes in Canada provide a warm and stable environment for its people, all year round.


Exercise 3.3: Uses of Insulation

 

Copyright © 2001, the Crown in Right of Alberta, as represented by the Minister of Learning, Alberta Learning, 11160 Jasper Avenue, Edmonton, Alberta T5K 0L2

Picture and Photos:( For specific picture reference view page source.)
Copyright © 2000-2001 www.arttoday.com, Copyright © 2001 Jeannie Charrois

Section 3 Notes

You will have two opportunities to write this section quiz. This quiz consists of 10 questions. Use the results from your 1st attempt to help you prepare for your second attempt. Your best score will be taken as your assessment mark. You have 10 minutes to complete this multiple choice quiz. Remember to do this quiz under testing conditions without texts, aids, or help.

Click the icon to go to the quiz.