1.3 - Mass, Weight & Density

Flashcards on Mass, Weight, and Density based on IGCSE Physics notes.

Mass

A measure of the quantity of matter in an object at rest relative to the observer.

Inertia

The property of an object that resists change in motion.

Weight

A gravitational force on an object with mass.

Weight

The effect of a gravitational field on a mass.

Gravitational Field Strength

The force per unit mass acting on an object in a gravitational field.

Density

The mass per unit volume of a material.

Upthrust

A force that pushes upwards on an object submerged in a fluid.

Floating and Sinking

If the object is denser than the fluid, it will sink. If the object is less dense than the fluid, it will float.

Density and Floating

Whether an object floats or sinks depends on the relative densities of the object and the fluid it is submerged in.

Floating Liquids

Liquids that do not mix, a liquid with a lower density will float on a liquid with a higher density.