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Class 7

Science: Curiosity

90 lessons in 12 chapters, explained in plain words.

The Ever-Evolving World of Science

  1. Science is a way of thinking
  2. The journey through this book
  3. Science and responsibility
  4. Question the Answer

Exploring Substances: Acidic, Basic, and Neutral

  1. Litmus tells us three things
  2. Sour, slippery and bitter
  3. Red rose as an indicator
  4. Turmeric as an indicator
  5. Indicators you can smell
  6. When an acid meets a base
  7. Neutralisation in daily life

Electricity: Circuits and their Components

  1. Electricity all around us
  2. The electric cell
  3. Making a battery from cells
  4. Inside an incandescent lamp
  5. The LED and its one direction
  6. A complete circuit
  7. Switches and circuit diagrams
  8. Conductors and insulators

The World of Metals and Non-metals

  1. The ironsmith and malleability
  2. Ductility: drawn into wires
  3. Sonority: the ringing sound
  4. Metals carry heat
  5. Metals carry electricity
  6. Rusting and corrosion
  7. Metal oxides and non-metal oxides
  8. Non-metals in everyday life

Changes Around Us: Physical and Chemical

  1. Noticing changes
  2. Physical changes
  3. Chemical changes
  4. Rusting and combustion
  5. Ignition temperature
  6. A burning candle
  7. Reversible and desirable changes
  8. Weathering and erosion

Adolescence: A Stage of Growth and Change

  1. The stages of life
  2. Physical changes in adolescence
  3. Secondary sexual characteristics
  4. The menstrual cycle
  5. Emotional and behavioural changes
  6. Eating well and keeping clean
  7. Being active and being safe online
  8. Saying no, and why the changes happen

Heat Transfer in Nature

  1. Conduction
  2. Good and poor conductors
  3. Hot air rises
  4. Convection in liquids
  5. Land and sea breeze
  6. Radiation
  7. The water cycle
  8. Water beneath the ground

Measurement of Time and Motion

  1. Keeping time before clocks
  2. The simple pendulum
  3. What the time period depends on
  4. The unit of time
  5. Who is faster?
  6. Speed, distance and time
  7. Uniform and non-uniform motion

Life Processes in Animals

  1. The journey begins in the mouth
  2. Food pipe and stomach
  3. The small intestine
  4. The large intestine
  5. Ruminants and birds
  6. How we breathe
  7. Breathing is not respiration
  8. Breathing in other animals

Life Processes in Plants

  1. What plants need to grow
  2. Leaves are food factories
  3. Sunlight and the green patches
  4. Carbon dioxide from the air
  5. Photosynthesis
  6. Stomata
  7. Xylem and phloem
  8. Plants respire too

Light: Shadows and Reflections

  1. Luminous and non-luminous
  2. Light travels in a straight line
  3. Transparent, translucent and opaque
  4. Shadows
  5. Reflection of light
  6. Images in a plane mirror
  7. The pinhole camera
  8. Periscope and kaleidoscope

Earth, Moon, and the Sun

  1. The Earth rotates
  2. Day and night
  3. The Pole Star stands still
  4. The Earth's revolution
  5. Why we have seasons
  6. Solar eclipse
  7. Watching an eclipse safely
  8. Lunar eclipse