book

 

Learn English  
  Blue Level  
  Red Level  
  Yellow Level  
  Green Level  
  Purple Level  
  Orange Level  
  Violet Level  
  Video Lessons  
  Links  
  American Speech  
  Chat  
  How to Learn  
  Vocabulary  
  U.S. Citizenship  
  Reading  

 

 


 
 

February 22, 2015 - Word of the Day

valve

 

A valve is a device that controls the flow of liquid, gas, or air.

valve

  • An open valve allows liquid, gas, or air to move through pipes easily.
  • When the valve is closed, nothing flows through.

large valve

  • Valves are found on industrial equipment, in factories and plants.

trumpet

  • The valves on a trumpet are controlled by a musician who blows air through the instrument to create different sounds.

heart valves

  • There are valves in your heart that control the flow of blood. These are called pulmonary valves.

 

Click here to learn more words.

 

 

 

 

Home | Your Teacher | Contact | Privacy Policy | Site Map | Terms Of Use

 

 

 

© 2015 Learn American English Online. All rights reserved.