DensityIB MYP Physics: Flashcards

What these 14 flashcards ask

What is the equation for density?
What are the units of density?
Convert 1 g/cm³ to kg/m³.
How do you find the volume of a regular solid?
How do you find the volume of an irregular solid?
How do you find the density of a liquid?
When does an object float?
When does an object sink?
What is the density of water?
Why does a steel ship float?
Why is a gas much less dense than the same substance as a liquid?
What does a displacement can measure?
Which common substance is less dense as a solid than as a liquid?
Calculate the mass of 50 cm³ of a material with density 0.60 g/cm³.

Exam questions on Density

A jeweller in Jaipur is testing a solid rectangular metal block. The block has a mass of 324 g and measures 4.0 cm by 5.0 cm by 6.0 cm.
The density of the block is 2.7 g/cm³. Convert this to kg/m³.2 marks
A ship designer in Busan tests three materials in fresh water, which has a density of 1.0 g/cm³. The density of the wood is 0.60 g/cm³, the density of the plastic is 1.2 g/cm³ and the density of the steel is 7.8 g/cm³.
Calculate the mass of 50 cm³ of the wood.2 marks
A student in Accra wants to find the density of a small irregular stone. She has a balance, a displacement can filled to the spout with water, a measuring cylinder and some string. She finds that the stone has a mass of 84 g and that the water displaced by the stone measures 30 cm³.
Outline how the student could have obtained the mass and the volume of the stone.3 marks

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).