Page 21 - Softcopy for Teachers buku kerja + nota Nilam Publications

MODUL • Fizik TINGKATAN 5

Rajah / Diagram:
• Gelombang bunyi mempunyai gelombang yang panjang.
Sound wave has a long wavelength. Dinding
Wall
• Belauan gelombang bunyi menyebabkan bunyi masih boleh didengar di penjuru dinding
bangunan. Pendengar
Diffraction of sound waves enables sound to ‘go around a corner’. Listener Radio
Radio

Eksperimen / Experiment
Pembelauan gelombang air / Diffraction of water waves

Inferens Sudut bengkokan gelombang air bergantung kepada saiz celah
UNIT 1
Inference The angle of bending of the waves depends on the size of the slit

Hipotesis Sudut bengkokan gelombang air meningkat apabila saiz celah berkurang
Hypothesis The angle of bending of the waves increases as the size of slit decreases

Tujuan
eksperimen Mengkaji hubungan antara sudut bengkokan gelombang air dan saiz celah
Aim of the To investigate the relationship between the angle of bending of the waves and the size of the slit
experiment
Pemboleh ubah dimanipulasikan / Manipulated variable:
Saiz celah, a, / Size of slit, a

Pemboleh ubah Pemboleh ubah bergerak balas / Responding variable:
Variables Sudut bengkokan gelombang air, θ° / Angle of bending of the water waves, θ°
Pemboleh ubah dimalarkan / Constant variable:
Frekuensi penggetar / Frequency of vibrator

Senarai bahan Tangki riak, lampu, motor, bar kayu, bekalan kuasa, kertas putih, dua batang bar besi, pembaris meter,
dan radas protraktor dan stroboskop mekanikal
List of materials Ripple tank, lamp, motor, wooden bar, power supply, white paper, two pieces metal bar, metre rule, protractor and
and apparatus mechanical stroboscope

Lampu
Lamp
Motor
Motor
Air
Water Bar logam
Metal bar
Celahan
Susunan radas Aperture slit
Arrangement of the Stroboskop
apparatus mekanikal
Mechanical
stroboscope
Bar getaran
Vibrating bar

Kertas putih (skrin)
White paper (screen)

© Nilam Publication Sdn. Bhd. 22