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SILABUS

Level of Education : Junior High School Class/Semester : VIII/2Subject : ScienceStandard Competence : Understand the concept and the application of the vibration, wave and optic in the technology product in daily life

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Describe the vibration and the wave concept and their parameters

LP 6.1

Vibration and WavesVibration

1. explain the concept of vibration by connecting relevant nature phenomenon.

2. measure the period of a vibration of something hung with a rope or spring.

3. investigate that the period of a vibration does not depend on its amplitude, but depends on the length of its rope.

4. use the concept and principle of vibration to calculate the frequency or period. (T = 1/f; f = 11T).

Cooperative pair thinking and sharing

2 Period 1. Chapter 6 in Student's Book: Vibration and Waves.

2. SAW 6.1 (investigation Activity): Making a Sound with a Ruler.

3. SAW Guide 6.1 (Special for the Teacher).

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LP 6.2


1. apply the concept of vibration by connecting the relevant natural phenomena.

2. measure the period of a vibration of something being hung by a rope or a spring.

3. investigate that the period of a vibration does not depends on the amplitude, but depends on the length of the rope.

4. use the concept and principle of vibration to calculate the frequency or the period. (T = 1/f, f = 1/T).


1 Period 1. Student's Book Chapter 6: Vibration and Waves.

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LP. 6.3


1. apply the concept of vibration by connecting the relevant natural phenomena.

2. measure the period of a vibration of something being hung by a rope or a spring.

3. investigate that the period of a vibration does not depends on the amplitude, but depends on the length of the rope.

4. use the concept and principle of vibration to calculate the frequency or the period. (T = 1/f, f = 1/T).

Contextual Teaching and Learning, Observation, discussion


2. SAW 6.3 (The Period and Frequency of a Swing).

3. SAW Guide 6.3 (Special for Teacher).

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LP. 6.4

Vibration and WaveWaves

1. compare the characteristics of mechanical and electromagnetic waves.

2. compare the characteristics of longitudinal and transversal waves.

3. investigate the wavelength on a rope for transversal wave and slinky for longitudinal wave.

Contextual Teaching and Learning, Observation, discussion


2. SAW 6.2: Making a Wave.


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LP. 6.5


1. compare the characteristics of mechanical and electromagnetic waves.

2. compare the characteristics of longitudinal and transversal waves.

3. investigate the wavelength on a rope for transversal wave and slinky for longitudinal wave.

4. do a simple quantitative analysis to find the spread velocity of wave : v = .f or v =/T.



2. SAW 6.2: Making a Wave.


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LP. 6.6


1. Students can do the simple quantitative analysis to find the spread velocity of wave: v = . f or v = / T


1 Period 1. Chapter 6 of Student's Book: Vibration and Waves.

2. SAW 6.3: Mathematics of a Wave.

3. SAW Guide 6.3 (Special for the Teacher).

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LP. 6.7


1. investigate the characteristics of waves reflected on the rope with the bound and free end.



2. SAW 6.4: Reflection of Waves on a Rope.

3. SAW 6.4 Guide (Special for the Teacher).

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Describe the earthquake and the tsunami processes

LP. 6.8

Earthquake 1. To differentiate between infrasonic, ultrasonic, and audio sonic.

2. To explain characteristics of sound wave.

The teaching model is inquiry

1 Period 1. Students' Textbook2. SWS 6.5 Recognizing

wave.

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Describe the earthquake and the tsunami processes

LP. 6.9

Tsunami 3. To differentiate between infrasonic, ultrasonic, and audio sonic.




wave.

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Describe sound concept in daily life

LP. 6.10

SoundsThe nature of sounds

5. To differentiate between infrasonic, ultrasonic, and audio sonic.




wave

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LP. 6.11

SoundsMedium and reflection of sound

1. To describe the medium of sound wave.

2. To give examples the usage and effect of sound reflection in everyday life.



sound.5. SWS 6.5 The cannon

of sound6. SWS Guide 6.77. SWS Guide 6.8

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LP. 6.12

SoundsResonance

1. To show resonance in everyday life.

2. To show the usage of sound wave in everyday life.


2 Period 1. Students' Textbook

2. SWS 6.9 Resonance.

3. SWS Guide 6.9

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Investigate the characteristic of light and the relation with mirror and lens

LP. 6.13

Light travels in a straight and Reflection of Light

1. recognize that light is an electromagnetic wave and know its wave length and frequency range.

2. define a ray and give an example of evidence that light travels in a straight line

3. explain the work of a pinhole camera state the law of reflection

4. distinguish between diffuse and regular reflection

Cooperative learning

2 Period 1. Student Book : Chapter 6; Light

2. worksheets: 6.10 a, and 6.10 b

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LP. 6.14

Refraction 1. Define refraction and predict whether a ray will bend toward or away from the normal when light moves from one medium into another.

2. Relate the index of refraction of a medium to the speed of light in that medium.

3. Solve problems related to these two quantities ( index of refraction of a medium and speed of light)

4. Explain the total internal reflection and the critical angle.


2 Period 1. Student Book : Chapter 6; Light

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LP. 6.15

Mirror 1. Recognize the characteristics of an image formed by a plane mirror

2. Distinguish between real and virtual images formed by a mirror

3. Locate the image by using a ray diagram

4. Design and implement activities to measure the focal length of a concave mirror

5. Find out the position of the image formed by a mirror using a formula relating on object and image distance.


2 Period 1. Student Book : Chapter 6; Mirror and Lens

2. Student Worksheet: 6.12

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LP. 6.16

Lens 1. Recognize the characteristics of an image formed by a lens

2. Distinguish between real and virtual images formed by a lens

3. Locate the image by using a ray diagram

4. Design and implement an activity to investigate the relation between image distance and object distance in a lens

5. Find out the position of the image formed by a lens using the formula relating object and


2 Period 1. Student Book : Chapter 6; Mirror and Lens

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image distance.

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Describe the optical instrument and their application in daily life

Optical InstrumentsThe Eye and the Camera

1. explain the function of eyes as optical instruments

2. describe the formation of image on the retina

3. explain several eye defects and the use of glasses

Cooperative learning Presentation and discussion

2 Period 1. Student Book : Chapter 6; Optical Instruments

2. Student's Worksheet 6.14: Making a pinhole camera.

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LP. 6.174. observe the characteristics of

the camera as an optical instrument

5. explain the similarities and differences between the eyes and camera

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Describe the optical instrument and their application in daily life

LP. 6.18

Optical InstrumentsThe magnifying Glass, Microscope, telescope and Binocular

1. explain the functions of microscopes, telescopes, and binoculars as optical instruments

2. describe the formation of the image in microscopes, telescopes, and binoculars.

3. explain the similarities and the differences among the microscopes, telescopes and binoculars.

Cooperative learning Presentation and discussion

2 Period 1. Student Book : Chapter 6; Optical Instruments

2. Student's Worksheet 6.15: Making a simple microscope

3. Student's Worksheet 6.15: Making a simple telescope

4. Student's Worksheet 6.15: Making a simple

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4. Observe the characteristics of microscopes, telescopes, and binoculars as optic instruments.

binocular

Approval, Bandung, July, 2008Head Master Science teacher’s,

Aries Triwidajati S. SPd NIP. 132 085 254

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