Attribution and License

The following resources were consulted in the making of this study unit:

• OpenStax. (2022). Physical Quantities and Units. Available here. CC BY
• OpenStax. (2023).  Units and Standards. Available here. CCA 4.0
• OpenStax (2022). Density. Available here.  CC BY 4.0
• Najam Academy. You tube video. What are physical quantities. Available here.
• Knowledge Seeker. You tube video. Important Basic Physics Lab Equipment.  Available here. 
• The Sci Guys. You tube video. Layer Liquid Density Tower. Available here. 
• FuseSchool - Global Education. You tube video. Density Of Different States. Available here. 
• The Visual Mastering. You tube video. Relative density. Available here. 

Images:

speed of light	openstax	https://openstax.org/books/university-physics-volume-1/pages/1-2-units-and-standards	CCA
mass equipment	Emma Harrage		CC BY
Length equipment	Emma Harrage		CC BY
resistor	open prints	http://www.opensprints.com/howto_hub_assembly.php	CC BY
voltmeter	Electronics lab	https://www.electronics-lab.com/project/arduino-voltmeter-using-sh1106-oled-display/	CC BY SA
Ammeter	Rouslan Nabioullin	https://www.electronics-lab.com/project/arduino-voltmeter-using-sh1106-oled-display/	CC BY SA 4.0
compass	Evan-Amos		public domain
magnet	science stock photos	http://www.sciencestockphotos.com/free/physics/slides/horseshoe_magnet.html	CC BY 4.0
prism	Spigget		CCA SA 3.0
thermometer	kit lab	https://kitlab.exa.unicen.edu.ar/termmetro_de_laboratorio.html	CC BY SA 4.0
spring balance	embarcados	https://embarcados.com.br/calibracao-de-sensores-na-pratica/	CC BY SA 4.0
	clip ground	https://clipground.com/pics/getsecond	public domain
All density diagrams	Emma Harrage		CC BY