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TUGASAN 2 : PERBENGKELAN

MATA PELAJARAN : SAINS

TINGKATAN : LIMA

TAJUK : SISTEM HIDRAULIK

WAKTU : 2 WAKTU

OBJEKTIF :

1 . Mengaplikasikan Prinsip Sistem Hidraulik dalam kehidupan harian.

HASIL PEMBELAJARAN :

1. Menyatakan Prinsip Pemindahan tekanan dalam cecair.2. Mengaitkan tekanan pada omboh kecil kepada omboh besar di dalam operasi sistem

hidraulik.3. Jelaskan dengan contoh aplikasi sistem hidraulik dalam kehidupan seharian

LANGKAH AKTIVITI SOALAN SET INDUKSI Pelajar diberikan alat kelalang

plastik berlubang untuk memperkenalkan konsep Pemindahan tekanan dalam cecair.

PERKEMBANGAN 1 Prinsip pemindahan tekanan melalui penggunaan picagari yang diisi dengan air dan penutupnya dihalang jari.

Tayangan animasi berkenaan sistem hidraulik

Apakah prinsip operasi bagi jek hidraulik?Prinsip PascalLOTS : Mengingati

PERKEMBANGAN 2 Penerangan melalui ‘power point’ berkenaan sistem hidraulik.

Penerangan aplikasi sistem hidraulik melalui contoh powerpoint.http://www.slideshare.net/caden05/hydraulic-system-8030035?from_search=2

Terangkan apa yang akan berlaku apabila pedal brek dilepaskan.

Cecair brek mengalir balik ke silinder utama.

Spring memisahkan kekasut brek daripada dram pada roda belakang

Pelapik brek dipisahkan daripada disk brekpada roda hadapan

HOTS:Analisis

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PENUTUP Latihan WAJA WAJA 2010

12.6 Sistem Hidraulik

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Name: ………………………………………… Class : ……

Chapter 5

Exercise 7

Learning Area: Motion.

Learning Objective: Applying the principle of hydraulic system in every day life.

1. Diagram below shows a glass sphere with holes filled with water.

Draw the direction of the water shooting out from the holes when the piston is pushed inwards.

Complete the text below.

When the …………….. is pushed into the glass sphere, the water is ……………

out in ………. directions with the same ……………… This shows that the …………..

applied on the water is transmitted ……………….. in all directions. This principle of

………………. of pressure in liquids is called …………………………….

Water

Piston

pushed

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Pascal’s principle states that a change in …………….. applied to a fluid is

transmitted ……………….. in …………… directions.

2. Diagram below shows a simple hydraulic system.

(a) State relationship between pressure on piston X and pressure on piston Y.

………………………………………………………………………………………………….

(b) Complete the equation below:

3. State applications of the Pascal’s principle or hydraulic principle.

(a) …………………………………………………………………………………………………..

(b) …………………………………………………………………………………………………..

4. Diagram below shows a simple hydraulic jack. Write the correct label in the boxes

provided.

Piston X Piston Y

Liquid

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5. Diagram below shows the hydraulic brakes system in a car. Write the correct label in the boxes provided.

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Exercise 7

1.

Text: piston, pushed , all, force, pressure, equally, transmission, Pascal’s principle// Hydraulic principle , pressure, equally , all

2. (a) Pressure on piston X = Pressure on piston Y

(b)

3. (a) & (b) Hydraulic brake , Hydraulic jack.

4.

Water

Piston

pushed

Force on X = Force on Y

Area on X Area on Y

Small piston

Small cylinder

Large piston

Oil

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5.

Master cylinder

Wheel cylinder

Brake shoe Brake pad

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