Natural Sciences Grade 7-B
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Description
Contents
Reviews
Language
Unknown
ISBN
4209619566
SB 103_Siyavula NEW Gr7B cover ENG DBE
Gr 7_B_learner_DBE_eng
Energy and Change
Sources of energy
Renewable and non-renewable energy
Relationship of the Sun to the Earth
Solar energy and the Earth's seasons
Solar energy and life on Earth
Stored solar energy
Potential and kinetic energy
Potential energy
Kinetic energy
Law of conservation of energy
Potential and kinetic energy in systems
Heat: Energy transfer
Heating as a transfer of energy
Conduction
Convection
Radiation
Heat insulation and energy saving
Why do we need insulating materials?
Using insulating materials
Energy transfer to surroundings
Useful and wasted energy
The national electricity supply system
Energy transfers in the national grid
Conserving electricity in the home
Planet Earth and Beyond
Relationship of the Moon to the Earth
Relative positions
Gravity
Tides
Historical development of astronomy
Early indigenous knowledge
Modern developments
Image Attribution
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