CXC Integrated Science exam guide: Section D: Energy



CXC Integrated Science exam guide: Energy


CXC Integrated Science Exam Guide

Section D - Transportation

 

General objectives of the section:

Candidates should demonstrate an understanding of:

1. The basic principals involved in motion on land and in water and flight through air and space;
2.

The scientific principals of road safety practices;

3. The nature of the gravitational force;
4. The motions taking place within our solar system ; .

5. The characteristics of space;
6. Earth and air movements and their effects ;
7. The principals of conservation of mass energy and momentum;
8. The methods used in transferring energy.

UNIT I - ENERGY

Specific Objectives

Students should be able to:

 

Explanatory notes
Suggested Practical Activities

1

Discuss the concept of energy;

 

Energy as an ability to produce a change

Activities involving change of state
(chemical composition, temperature, and motion)

2

Discuss the interconversion and conservation of mass energy;

 

Consideration that energy can be interconverted, stored by physical or chemical means, put into motion, or used to do war, for example, in the sun: nuclear reactors, bombs;

energy supply in space;

discuss photosynthesis;

methods used to solve energy supply to vehicles and measures that may be taken to minimize the ill-effects of use of internal combustion engine on life and the environment;

(see also Unit on electricity)

Demonstrate by using- telephones; springs; lamps; shock absorbers in vehicles; batteries; electric motor

3

Discuss the transport and transfer of energy;

Vehicular collision; transfer of energy by a wave method; energy reflected and brought into focus

Moving stationary objectives by means of rolling on swinging spheres.

Use of ripple tank, shaking rope or slinky as demonstration; use of dish aerials, mirrors, headlamps

4

 

Discuss the principles of momentum conservation;

Consider conservation of linear momentum

(refer to vehicular collision)

Use the momentum conservation principle to predict the outcomes of collision;

use simple qualitative trolley experiments

 

 

 


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