Hydraulics

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/hydraulics

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the etymological origin?From Ancient Greek 'húdōr' (water) and 'aulós' (pipe)
2. What is the theoretical foundation?Fluid mechanics, particularly the behavior of liquids under pressure and Pascal's Principle
3. What is hydraulics and how does it use liquids to move heavy objects?Hydraulics is a way of using liquids like water or oil to move heavy things. When you push on a small piston, the liquid transmits the pressure to a bigger piston, making a lot of force.
4. Why can't gases be used the same way as liquids in hydraulics?Gases can compress, so the pressure can change. Liquids are almost incompressible, so the pressure stays the same everywhere and moves the force efficiently.

Fluid Mechanics: The study of fluids (liquids and gases) and the forces on them.
Pascal's Principle: Pressure applied to a confined fluid is transmitted equally in all directions.
Hydraulic Actuator: A device that converts hydraulic energy into mechanical force and motion.
Free Surface Hydraulics: The study of liquid flow with a free surface, like in rivers and lakes.