Print bookPrint book

Week 25 - Material Properties, Joining Materials and Natural Structures

Site: MoodleHUB.ca 🍁
Course: Science 7 LearnNet
Book: Week 25 - Material Properties, Joining Materials and Natural Structures
Printed by: Guest user
Date: Thursday, 18 September 2025, 3:16 PM

Description

Week 25 - Material Properties, Joining Materials and Natural Structures

Table of contents

Exercise 3.1


Lesson 3.1: Materials and their Properties


ACTIVITY A: Classifying Material Properties



Required Readings

Science in Action 7
pages 308 to 312
or
Science Focus 7
pages 282 to 289


As people, we are affected each day by decisions that people have made about materials. Whether we are in a school building constructed from brick or a mall using the latest in building materials. The decisions involve design, practicality and environment awareness. Later on in life you will likely make decisions in the type of materials to be used in the development of new homes.

Things to consider when making decisions about what materials to use for a particular job as adapted from Science in Action 7 page 309.



Properties of Materials
Other Considerations
colour aesthetics
brittleness consumer demand
ductility availability
hardness cost
plasticity effect on the environment
resistance to heat effect on the environment
resistance to water disposal of waste
resistance to wind
compression
tensile strength

 
Exercise 3.1: Bridge Designer


Exercise 3.2


Lesson 3.2: Joining Structural Components


ACTIVITY A: Joining Materials



Required Readings

Science in Action 7
pages 313 to 318
or
Science Focus 7
pages 290 to 296


To complete wood projects the cabinetmaker must use various joints to stabilize his project. Other everyday examples using joints are bridges and railroad tracks. These examples use expansion joints to overcome problems with expansion and contraction of materials.

The joining of Prince Edward Island to the rest of Canada with a bridge was a huge undertaking in the 1990's. Watch the 6 sections of the Confederation Bridging Building.
Exercise 3.2: Joining Materials

Exercise 3.3


Lesson 3.3: Properties of Materials in Plant and Animal Structures


ACTIVITY A: Plant and Animal Structures



Required Readings

Science in Action 7
pages 319 to 321
or
Science Focus 7
pages none
Plants and animals have a variety of similar and dissimilar structures. The structures have various functions such as getting rid of waste, obtaining food and adapting to the environment. Even though there is differences the majority of these structures involve the same elements oxygen, carbon and hydrogen.


Structure and function go together in nature and man-made design. Take a close look at the design of the human body and you will see that form follows function.

               

Exercise 2.2: Animal Structures

Section 3 Notes

You have two options for your Section 1 Quiz - a multiple choice quiz or a written response quiz. You may choose to write the multiple choice or the written response. You only need to write one of them, so the choice is up to you! You are allowed to try both quizzes if you want, but it is not required.

The quiz attempt with the highest grade will be the one that is recorded on your report card.

The multiple choice quiz has 10 multiple choice, matching, and true/false questions. You have 15 minutes to complete it. As soon as the quiz submitted it will be auto-graded and you will receive a grade immediately.

Click the image above to start your quiz

The written response quiz has 5 short answer questions. Your responses must give a complete and detailed answer to the question. You have 20 minutes to complete the quiz. This quiz needs to be manually marked by your teacher, so you may have to wait a few days to get feedback and a grade.

Click the image above to start your quiz