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Class 9–10 practice
Learn each chapter in its simulator, then answer the practice questions under it. Every lab with practice has 10 questions: the first 3 are free, the rest come with SimuVeda Pro . Answers are checked instantly with a worked explanation.
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Food Web
Change species populations in a small grassland food web and follow how a change in one species ripples through the others.
Biology · Ecology
Class 6–8 · Class 9–10 · Class 11–12 Class 10 Science: Our Environment (food chains and webs); Class 12 Biology: Ecosystem
Launch simulator : Food Web
Genetic Crosses
Choose parental alleles for one or two genes, build the Punnett square, and compare expected offspring ratios with a random sample of offspring.
Biology · Evolution & Genetics
Class 9–10 · Class 11–12 Class 10 Science: Heredity; Class 12 Biology: Principles of Inheritance and Variation
Launch simulator : Genetic Crosses
Neuron Signals
Stimulate a model neuron, change stimulus strength and membrane properties, and watch threshold, action potentials, refractory periods and firing rate.
Biology · Cells & Physiology
Class 9–10 · Class 11–12 · College & beyond Class 10 Science: Control and Coordination; Class 11 Biology: Neural Control and Coordination
Launch simulator : Neuron Signals
Osmosis
Separate two solutions with a semi-permeable membrane, change concentrations and permeability, and watch net water movement and osmotic pressure.
Biology · Cells & Physiology
Class 9–10 · Class 11–12 Class 9 Science: The Fundamental Unit of Life (osmosis); Class 12 Chemistry: Solutions (osmotic pressure)
Launch simulator : Osmosis
Photosynthesis
Adjust light intensity, carbon dioxide and temperature for a leaf, and explore which factor limits the rate of photosynthesis.
Biology · Cells & Physiology
Class 6–8 · Class 9–10 · Class 11–12 Class 7 Science: nutrition in plants; Class 10 Science: Life Processes; Class 11 Biology: Photosynthesis in Higher Plants
Launch simulator : Photosynthesis
Acid–Base Titration
Add base from a burette to an acid, graph the pH curve, and identify the equivalence point, buffer region and a suitable indicator.
Chemistry · Acids & Bases
Class 9–10 · Class 11–12 Class 10 Science: Acids, Bases and Salts; Class 11 Chemistry: Equilibrium (ionic)
Launch simulator : Acid–Base Titration
Chromatography
Spot a mixture on a strip, change each dye's affinity and the solvent flow, and watch components separate by retention factor.
Chemistry · Separation
Class 6–8 · Class 9–10 · Class 11–12 Class 6 Science: separating substances; Class 11 Chemistry: methods of purification
Launch simulator : Chromatography
Molecular Diffusion
Release two gases on either side of a barrier, change temperature and particle count, and compare mixing with random-walk displacement statistics.
Chemistry · Thermochemistry & Mixtures
Class 6–8 · Class 9–10 Class 9 Science: Matter in Our Surroundings (diffusion)
Launch simulator : Molecular Diffusion
Solubility
Dissolve salts in water, change temperature and amount, and see when a solution becomes saturated and excess solid remains or crystallises out.
Chemistry · Thermochemistry & Mixtures
Class 9–10 · Class 11–12 Class 9 Science: Is Matter Around Us Pure (solutions); Class 12 Chemistry: Solutions
Launch simulator : Solubility
Rainwater Harvesting
Set rainfall pattern, roof size, tank capacity and daily use, then run a year of daily water balance and track tank level, overflow and shortages.
Earth & Environment · Water & Hydrology
Class 6–8 · Class 9–10 Class 10 Geography: Water Resources (rainwater harvesting)
Launch simulator : Rainwater Harvesting
Recycling Systems
Follow 100 tonnes of packaging through collection, sorting and reprocessing, and see how much becomes new material over repeated cycles.
Earth & Environment · Resources & Waste
Class 6–8 · Class 9–10 Class 10 Science: Our Environment (managing waste)
Launch simulator : Recycling Systems
Watershed Runoff
Change storm size and land cover for a small catchment, and compare simplified runoff curves and flood hydrographs with the SCS curve number method.
Earth & Environment · Water & Hydrology
Class 9–10 · College & beyond Class 10 Geography: Water Resources
Launch simulator : Watershed Runoff
Wind Turbine
Change wind speed, rotor size, air density and control, and explore turbine power with the cube law, the Betz limit and tip-speed ratio.
Engineering · Energy Systems
Class 9–10 · College & beyond Builds on Class 9 Science: Work and Energy (kinetic energy)
Launch simulator : Wind Turbine
Monte Carlo Estimation
Throw random points to estimate π or the area under a curve, and watch the error shrink with the square root of the sample count.
Mathematics · Probability & Statistics
Class 9–10 · Class 11–12 Class 10 Maths: Probability (estimating π with random points)
Launch simulator : Monte Carlo Estimation
Atom Lab
Build atoms by adding protons, neutrons and electrons, and see how the element, charge and isotope change.
Physics · Atomic & Nuclear, Atomic Structure
Class 9–10 · Class 11–12 Class 9 Science: Structure of the Atom; Class 11 Chemistry: Structure of Atom
Launch simulator : Atom Lab
Buoyancy
Drop blocks of different densities into different liquids, predict whether they float and how deep, and see Archimedes' principle balance the forces.
Physics · Fluids
Class 9–10 · Class 11–12 Class 9 Science: Gravitation (thrust, buoyancy, Archimedes' principle); Class 11 Physics: Fluids
Launch simulator : Buoyancy
Collisions
Collide two carts on a track, change their masses, velocities and restitution, and check momentum and kinetic energy before and after.
Physics · Mechanics
Class 9–10 · Class 11–12 Class 9 Science: Force and Laws of Motion (momentum); Class 11 Physics: Work, Energy and Power
Launch simulator : Collisions
Geometric Optics
Drag an object in front of a thin lens, change the focal length, and trace the principal rays to find the image position, size and type.
Physics · Optics
Class 9–10 · Class 11–12 Class 10 Science: Light – Reflection and Refraction; Class 12 Physics: Ray Optics
Launch simulator : Geometric Optics
Magnetic Fields
Place current-carrying wires and coils, and see the magnetic field lines, strength and direction they create, plus forces between parallel wires.
Physics · Electricity & Magnetism
Class 9–10 · Class 11–12 Class 10 Science: Magnetic Effects of Electric Current; Class 12 Physics: Moving Charges and Magnetism
Launch simulator : Magnetic Fields
Orbital Motion
Launch a satellite around a planet, change its starting speed and direction, and compare circular, elliptical and escape trajectories.
Physics · Mechanics
Class 9–10 · Class 11–12 Class 9 Science: Gravitation; Class 11 Physics: Gravitation
Launch simulator : Orbital Motion
Refraction
Shine a ray between two media, change refractive indices and incidence angle, and find the critical angle and total internal reflection.
Physics · Optics
Class 9–10 · Class 11–12 Class 10 Science: Light – Reflection and Refraction; Class 12 Physics: Ray Optics
Launch simulator : Refraction