CXC Integrated Science exam guide: Section C: Audio Visual Acitivites



CXC Integrated Science exam guide: Audio-visual Activities


CXC Integrated Science Exam Guide

Section C- Recreation

 

General objectives of the section:

Candidates should demonstrate an understanding of:

1.

The scientific concepts , principals and skills involved in recreational activities;

2.

The scientific concepts, principals and skills involved in the handling of equipment;

3. The positive and negative aspects of leisure and recreational activities as regards the well-being of the individual and of the society;
4. The basic principals and functioning of audio visual aids used during leisure.

UNIT IV- AUDIO-VISUAL ACTIVITIES

Specific Objectives

Students should be able to:

 

Explanatory notes
Suggested Practical Activities

1

*identify the applications of rectilinear propagation, reflection and refraction in simple optical devices and  natural phenomenon

 

Simple qualitative treatment only; image formation by projector; headlamps, reflector, mirrors; image formation

Activities using plane and curved mirror and lenses. simple qualitative treatment only

2

Describe how to separate white  light into its component colours;

 

 

Glass or water prisms can be used.

3

Differentiate between primary and secondary colours;

 

 

4

 

Discuss the effects produced by mixing various combinations of primary pigments;  

Separation of different coloured inks by chromatography.

 

 

5 Discuss the effects produced by mixing various combinations of primary coloured lights Stage lighting, colour TV and  colour photography, painting and dyeing Colour wheel or ray boxes with filters.
6 Discuss the application of color mixing principles;   Perform solvent extraction , use of alcohol
7 *describe techniques for extracting products such as dyes from the natural sources   Perform simple experiments to demonstrate photochemical reactions
8 Describe photochemical reactions such as occur in photosynthesis and photography ‘blueprint’ paper, or paper treated with silver chloride placed in sunlight  
9 * compare notes (frequencies) produced by different types of musical instruments “Quality” (timbre) Use stringed, wind and percussion instruments with special emphasis on Caribbean instruments for example, steel drum. Carry out and describe simple investigation on pitch and loudness
10 Describe the factors affecting pitch and loudness;    
11 Identify the position of radio waves in the electromagnetic spectrum;   Use chart of electromagnetic spectrum
12 Explain the  use of medium and short waves in broadcasting The consequences of using AM or FM broadcasting;  
13 Distinguish between AM and FM Quality of broadcast and range of reception.  
14 Discuss the hazards of radios, television sets and other equipment that operate from the mains Radiation and voltage hazards.  

Go to Section D: TRANSPORTATION

 


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