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Exploring Diversity of Matter
Success Criteria - Chap 2.pdf
Physical Properties of Common Materials
Physical Properties of Common Materials
Test Yourself:
Can you recall the physical properties of each material?
Can you relate these properties to their common uses?
Definitions of Physical Properties
Definitions of Physical Properties
Test Yourself: Can you recall each definition?
Tip: Learn to differentiate "hardness" from "strength"
Materials for Making a Car
Materials for Making a Car
Test Yourself: Answer the questions
Tip: You must be confident in justifying why certain materials are more suitable for making specific parts
How to Use a Digital Caliper
How to Use a Digital Caliper
- Matt's Metalworking
Tip: Learn how to measure the external diameter, internal diameter, and depth of an object
Volume Displacement Method
Volume Displacement Method
- Mark Drollinger
Tip: Learn how to determine the volume of an irregular object with this method
Density Column
Density Column
Test Yourself: Based on what you see, rank the materials from the least dense to the most dense
Density Column
Density Column
- The Sci Guys
Try This Out: Make your very own density column at home or with a group of friends!
Density Formula
Density Formula
Tip: Be familiar with this formula and watch out for the units! (g/cm3 or kg/m3)
Why Does Ice Float on Water?
Why Does Ice Float on Water?
- TED-Ed
Think: Is ice less dense or more dense than water? Why?
Why Does Everyone Float In The Dead Sea?
Why Does Everyone Float In The Dead Sea?
- Science ABC
Think: Use the density formula to explain how the Dead Sea's salinity causes people to float easily
How Do Metal Ships Float?
How Do Metal Ships Float?
- ScienceWorld
Think:
1. What are the different forces exerting on a ship?
2. Why did the Titanic sink?
3. How do submarines dive deep into the ocean?
Real-World Application (I)
Below are 3 interesting videos about plastic waste:
How plastic bags were supposed to help the planet
How plastic bags were supposed to help the planet
- BBC News
The plastic bag has become a symbol for the problems caused by pollution - But according to the family of the man who created it, his design was supposed to help the planet
Which bag should you use?
Which bag should you use?
- TED-Ed
It might seem obvious that plastic is bad for the environment, and that a paper bag or a cotton tote would be the better option. But is that really true?
Recall the life cycle of a product - Production, Transportation, Usage, and End-of-Life
Made in Singapore
Made in Singapore
- CNA insider
Scientists from Singapore have found a way to turn waste PET into aerogels - a super material used by the likes of NASA to soak up oil spills at sea faster
Real-World Application (II)
Below are 3 fascinating case studies about how different countries are reducing waste production:
Tokyo Olympics - Medals Made From Recycled Mobile Phones
Tokyo Olympics - Medals Made From Recycled Mobile Phones
- Diehard Engineering
The medals were created through the efforts of the people of Japan who donated their unwanted mobile phones to fund the materials needed to create approximately 5000 medals
Kamikatsu Village - The Town With No Waste
Kamikatsu Village - The Town With No Waste
- Great Big Story
After becoming aware of the dangers of carbon monoxide associated with burning garbage, the town instated the Zero Waste Declaration with the goal of being completely waste-free by 2020
Hilton Hotel - How Used Soaps Gets Recycled
Hilton Hotel - How Used Soaps Gets Recycled
- Tech Insider
'Clean the World' is a nonprofit organization that recycles used soaps, lotions, and other toiletries from hotels. Its partners include Hilton, Marriott, and Walt Disney World Resorts, among others
Real-World Application (III)
Below are 6 examples of unique 'green' buildings / projects in Singapore:
Punggol Northshore - A Smart and Sustainable District
Punggol Northshore - A Smart and Sustainable District
- HDB
HDB's first Smart and eco-friendly district - Find out more about ideas such as using solar irradiance, wind flow and sun shade for designing here!
Jewel Changi Airport
Jewel Changi Airport
- Changi Airport
(1) A special roof that contains air gaps to insulate noise from aircraft + glass panels that allow high light transmittance
(2) Staggered floors to allow 'displacement ventilation' which helps cool the lower levels
(3) Rain vortex that provides cooling to different floors + harvest rainwater
Find out more here!
Gardens By The Bay
Gardens By The Bay
- Landscape Architects Network
Learn more about how GBTB plan and design for sustainable cycles (of energy and water) throughout their gardens and lakes here!
National Gallery
National Gallery
- TODAYOnline
Two early 20th-century classical landmarks (City Hall and the Supreme Court) are merged using a complicated veil of glass and steel.
The canopy with its tree-like structure softens, filters, and controls the natural light entering the building.
The courtyards are also encased in glass atriums that allow light to filter through the reflective pools on the rooftop level to keep temperatures down.
Asia Square Building
Asia Square Building
- CapitaLand
Apart from solar panels and a smart roof that maximises natural sunlight:
(i) elevators convert kinetic energy back to electrical energy which are redistributed in the building
(ii) waste oil collected from eateries are used to generate electricity (e.g. cooking oil from hotel kitchens in The Westin is used as biodiesel for the hotel's limousines)
Kampung Admiralty
Kampung Admiralty
- WOHAarchitects
In his National Day Message, Prime Minister Lee held up this integrated housing estate as a “model for future public housing”.
The building’s roofscape is notable for its staggered terraces filled with lush plants. The housing units are also designed for natural ventilation and optimum daylight.
Sketchnote - Topical Summary
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