Class 7 Science Notes

Science as a growing body of knowledge, revising ideas with new evidence, and the journey from Grade 6 to Grade 7.

Acids, bases and neutral substances, natural and synthetic indicators, neutralisation and its uses in daily life.

Electric cells, lamps and LEDs, circuit symbols, switches, conductors and insulators, and closed and open circuits.

Physical properties of metals and non-metals, reactions with oxygen, water and acids, rusting and uses.

Physical and chemical changes, combustion, rusting, crystallisation, weathering and erosion.

Puberty, physical and emotional changes, hormones, nutrition, hygiene and health during adolescence.

Conduction, convection and radiation, conductors and insulators, sea and land breezes and the water cycle.

Measuring time with the simple pendulum, units of time, speed, uniform and non-uniform motion.

Nutrition and digestion in humans and other animals, ruminants, breathing and respiration in humans, fish and other animals.

Photosynthesis, the starch test, stomata, transport of water and minerals, and respiration in plants.

Light travels in straight lines, shadows, the pinhole camera, reflection, plane mirrors and images.

Rotation and revolution of the Earth, day and night, seasons, and solar and lunar eclipses.