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streamlined

Primary Information
Secondary Information

Definition

Streamlined is a term used to describe an object that has been designed to minimise drag as it moves through a fluid. Drag is the force that opposes the motion of an object through a fluid, such as air or water. Streamlined objects have a smooth, curved shape that helps to reduce drag.

The amount of drag that an object experiences depends on its shape, size, and speed. Streamlined objects have less drag than non-streamlined objects because the smooth, curved shape allows the fluid to flow around the object more easily.

Streamlining is important for objects that need to move through a fluid efficiently. For example, aeroplanes, cars, and boats are all designed to be streamlined in order to reduce drag and improve fuel efficiency.

How can the word be used?

The company streamlined its operations in order to save money.

streamlined

Different forms of the word

Adjective: streamlined.

Verb: to streamline.

Etymology

The word "streamlined" comes from the noun "streamline", which means "a line that follows the direction of fluid flow". It was first used in English in the 1920s.

The verb "to streamline" means "to make something more efficient by simplifying its design".

Question

What things are streamlined?

AQA Science Exam Question and Answer

Question:

Explain the concept of streamlined design and its significance in fluid dynamics. Describe how streamlined shapes reduce drag and enhance efficiency in various objects and organisms.

Answer:

Streamlined design refers to a shape that minimises resistance or drag when moving through a fluid, such as air or water. It is essential in fluid dynamics as it reduces energy loss and enhances efficiency. Streamlined shapes are characterised by smooth, curved surfaces that allow the fluid to flow easily around the object.

Objects and organisms with streamlined shapes experience less resistance as they move through the fluid. This is crucial for improving speed and manoeuvrability. Aircraft, for instance, are designed with streamlined wings and bodies to reduce air resistance, enabling efficient flight. Aquatic animals like dolphins and fish possess streamlined body shapes that reduce water drag, allowing them to move swiftly and efficiently through their environment.

Streamlined designs are also applied in various engineering and transportation applications. High-speed trains, submarines, and even Olympic swimwear are designed with streamlined shapes to minimise drag and optimise performance.