SAASTE Technology/Activities/Hydraulics

SAASTE Technology
Key Concepts
Grade 4 - Grade 5 - Grade 6 - Grade 7 - Grade 8 - Grade 9
Modules
Processing Grade 8/9 - Mechanical Systems Grade 9 - Structures Grade 5 - Structures Grade 8
Activities
Conductors & Insulators - Electronic Circuits - AND & OR Gates - Circuit/Systems Diagram - Hydraulics - Hydraulics & Pneumatics - Technological Products - Preservation-1 - Identifying Materials - Properties of Materials - Preservation-2 - Electroplating - Conditioning-Strengthening/Waterproofing-1 - Conditioning-Strengthening\Waterproofing-2 - Shaping - Forming - Forces - Types of Structures - Mechanisms Worksheet

Systems & Control

Grade 8

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Hydraulics

Syringes can be used to change the type & size of an input movement into a different output movement

File:SA NC Saaste Activities 14.png

ACTIVITY 1

Set up the investigation illustrated by the drawing above:

• Use two 10-ml syringes with approximately 200 mm length of plastic tubing.
• Use water in the system.
• Use syringes A as the master cylinder.

1. Observe and write down what happens at syringe B:

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2. Compare the distances

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ACTIVITY 2

Repeat the investigation using a 60-ml syringe as the master and a 10-ml syringe as the slave.

2. Observe and note what happens.

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3. Choose the correct options. If the plunger of the master syringe is pushed down 10 mm, the plunger of the slave will have moved:

A. 10 mm B. less than 10 mm C. more than 10 mm

Complete the system diagram below:

File:SA NC Saaste Activities 15.png

1. How is the input size changed?

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2. How is the input type changed?

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3. How would you describe the mechanical advantage that we get from a hydraulic system?

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Author: Deon Kahn Editor: Osman Sadeck