Forces and Fluids

Front

What are fluids?

Back

Fluids are substances that can flow and take the shape of their container. This includes both liquids and gases.

Front

What two factors affect pressure on an object?

Back

The amount of pressure acting on an object is affected by force and surface area.

Front

What must an object be in order to sink in water?

Back

An object must be more dense than water to sink.

Front

What principle explains how airplane wings allow flight?

Back

Brenoulli's principle explains how airplane wings create lift.

Front

What substance can flow and take the shape of its container without changing volume?

Back

A liquid can flow and take the shape of its container, but its volume remains constant.

Front

What is Pascal's principle?

Back

Pascal's principle states that when pressure is applied to a confined fluid, the pressure change occurs throughout the fluid.

Front

What is Archimedes' principle?

Back

Archimedes' principle states that an object submerged in a fluid experiences a buoyant force equal to the weight of the fluid displaced.

Front

What is the relationship between density and buoyancy?

Back

An object will float if it is less dense than the fluid it is in, and sink if it is more dense.

Front

What is the formula for calculating pressure?

Back

Pressure is calculated using the formula: Pressure = Force / Area.

Front

What is the difference between a liquid and a gas?

Back

Liquids have a definite volume but take the shape of their container, while gases have neither a definite shape nor a definite volume.