A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

drain

Primary Information
Secondary Information

Definition

A drain is a pipe or channel that carries away water or other liquids. Drains are an important part of our infrastructure, and they help to keep our homes, businesses, and cities clean and safe.

There are many different types of drains, including floor drains, sink drains, and bathtub drains. Floor drains are typically found in basements and bathrooms, and they are used to carry away water that has leaked or spilt. Sink drains are found in kitchens and bathrooms, and they are used to carry away water from sinks. Bathtub drains are found in bathtubs, and they are used to carry away water from bathtubs.

Drains work by gravity. Water flows down the drain because of the force of gravity. The slope of the drain helps to ensure that the water flows in the right direction.

Drains are an important part of our infrastructure, and they help to keep our homes, businesses, and cities clean and safe. They also help to prevent flooding and other problems caused by water buildup.

How can the word be used?

The rain drained the lake.

drain

Different forms of the word

Noun: drain.

Verb: drain.

Adjective: draining.

Adverb: drainingly.

Synonym: deplete, exhaust, sap.

Antonym: fill, replenish, sate.

Etymology

The word "drain" comes from the Old English word drēan, which means "to dry up". It is made up of the two Old English words drēosan (to dry up) and -an (verb ending).

Question

Write two different sentences which show the different uses of the word drain.

AQA Science Exam Question and Answer

Question:

Explain the importance of drainage systems in urban environments and their role in managing excess water. Describe the concept of surface water drainage and how it helps prevent flooding in cities. Provide examples of measures taken to improve drainage efficiency and their significance in urban planning and environmental protection.

Answer:

  • Drainage systems are essential in urban environments to manage excess water effectively. Surface water drainage is a crucial aspect of these systems, as it deals with rainwater runoff from roads, buildings, and other impermeable surfaces. Without proper drainage, cities are at risk of flooding during heavy rainfall or snowmelt.
  • Surface water drainage works by collecting rainwater through a network of drains, gutters, and underground pipes, which then channels the water to natural water bodies or treatment plants. This prevents water from pooling on roads and urban areas, reducing flood risk and preventing damage to infrastructure and property.
  • To improve drainage efficiency, cities often incorporate measures such as permeable pavements, green roofs, and retention ponds. Permeable pavements allow water to infiltrate the ground, reducing surface runoff. Green roofs absorb rainwater, while retention ponds store excess water and release it gradually to avoid overwhelming drainage systems during heavy rain events.
  • Efficient drainage systems are crucial in urban planning to create resilient and sustainable cities, protecting communities from flooding and safeguarding the environment by reducing pollution and erosion caused by runoff.