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4. Density of objects
You can float on the surface of the
Dead Sea with no effort, and even In Unit 3 you learnt about:
relax and read a book while floating! ✔ different types of motion
There are also lakes in Kazakhstan ✔ how to calculate the speed of an object, Physics
textbooks nis edu kz
with similar characteristics. Why can average speed and acceleration
you float easily on the Dead Sea but
✔ graphic ways of describing non-uniform motion
not in a swimming pool?
In this unit you will learn:
✔ methods of determining the mass of an object
✔ methods of determining the volume of objects
of regular and irregular shapes
✔ how to calculate density of solids, liquids
and gases
Key phrases:
✔ If you know the mass and volume of an object,
you can …
✔ The greater the mass of an object, the …
its speed
✔ An object has less inertia if …
✔ Objects have maximum density if …
✔ Objects have minimum density if …
CCL In Maths classes you have learnt how to
determine the volume of a solid body of regular
geometric shape. You also learnt how to plot and
analyze graphs in Unit 3 here. You know how to
record numbers in standard form. This knowledge
will help you in problem-solving when calculating
volume, mass and density of objects. In Chemistry
you have also learnt about atoms and molecules.
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