CXC Integrated Science exam guide: Section B: Lighting



CXC Integrated Science exam guide: Lighting


CXC Integrated Science Exam Guide

Section B-The Home/Workplace

General objectives of the section:

Candidates should demonstrate an understanding of:

1.

the soil and the sea as two most important outdoor working environments in the Caribbean and that they are both natural resources as well as ecosystems

2.

the relationship between humans and the environment in which they work

3.

the need for appropriate physical conditions such as ventilation and sanitation in the home and the workplace

4.
the inter-conversion and conservation of the different forms of energy;
5.

the occurrence of accidents and hazardous situations and safety measures used in their prevention.

UNIT VIII-LIGHTING

Specific Objectives

Students should be able to:

Explanatory notes
Suggested Practical Activities

1

Distinguish between natural and artificial lighting;

The terms ‘natural’ and ‘artificial’; the effects of natural and artificial lighting on colors of objects.

Simple combustion experiments to show that energy is evolved from petroleum.

2

Compare and contrast the uses of  fluorescent tubes and filament lamps in providing light;

 

Shadow formation, efficiency, ease of brightness control, and similarity with daylight.

Compare the brightness of various filament lamps of different wattage.

3

Discuss the problems poor lighting may cause in any working environment;

Effect on vision, occurrence of accidents; solutions to the problems.

Investigate ways in which homes and offices are constructed to maximize natural light sources.

4

 

Explain the principles involved in the production of light in the filament lamp and the fluorescent tube.  

Investigate the effects of varying currents on nichrome wire and relate observations to the production of light in the filament lamp.

 

Go to Section B: UNIT VIIII- CHEMICALS

 


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