Grade 7 Science Games
These 74 free science games for grade 7 let kids predict what will happen, watch it play out and see why. They cover forces & motion, simple machines, matter, earth & space, chemistry, energy, weather, ecosystems, space & astronomy, geology, cells & microbiology, environment & climate, oceans & marine life, extreme weather & sky, space exploration, genetics & heredity, evolution & classification, making electricity, motion & forces, waves & vibrations, light & optics, chemistry lab, body systems, plate tectonics, science skills and run in the browser with no sign-up and no ads.
Each game shows the grade band it is written for, so you can pick the ones that fit your child.
Forces & Motion
- Newton's CradleGrades 6–8Predict how many balls swing out when you release a few — momentum passes straight through.
- InertiaGrades 4–7Predict what a rider does when the bus stops suddenly — a moving body keeps moving.
- Pendulum SwingGrades 4–7Predict what changes a swing’s speed — only the length; weight and swing size do not.
- Force FieldGrades 6–8Cargo pods fall like Missile Command — fire the battery whose force stops each one (F = m × a, then braking from speed and time, then fighting gravity); too little lands, too much bounces back up.
Simple Machines
Matter
Earth & Space
- Why We Have SeasonsGrades 5–7Predict what makes summer hot — the tilt of the Earth, not its distance from the Sun.
- Volcanoes & EarthquakesGrades 4–7Predict what moving plates do — collide, pull apart or slip for mountains, volcanoes and quakes.
- Ocean TidesGrades 5–8Predict what causes tides — the Moon’s gravity pulls the ocean into a bulge Earth spins through.
Chemistry
- Atoms & MoleculesGrades 4–7Predict what things are made of — tiny atoms that join into molecules, packed tight or flying free.
- Physical or Chemical?Grades 4–7Predict the change — reshaping the same stuff, or making a brand-new substance you can’t undo.
- SolubilityGrades 4–7Predict what dissolves and how much — some things don’t, and water fills up and saturates.
- Acids & BasesGrades 5–8Predict acid or base — sour reds and slippery greens, revealed by an indicator’s color.
- Chemical ReactionsGrades 5–8Predict if a reaction happened — fizzing gas, a color change, heat or a new solid are the clues.
- Mixtures vs CompoundsGrades 5–8Predict mixture or compound — jumbled and separable, or atoms bonded into something new.
- Element DefenseGrades 5–7Atoms march down like Space Invaders — fire each one's outer-shell electrons, its periodic group, or the ion it forms, while shielded noble gases need the 🛡 key.
- Reaction LabGrades 6–8Steer and turn falling atom capsules so each molecule gets exactly the atoms its formula needs — then balance real reactions like 2H₂ + O₂ → 2H₂O.
Energy
- Kinetic & PotentialGrades 4–7Predict the energy — stored up high or in a spring, or the energy of motion as it’s released.
- Energy TransformationsGrades 4–7Predict what energy becomes — a bulb turns electrical into light; your body turns food into motion.
- Renewable EnergyGrades 4–7Predict which sources last — sun, wind and water refill; coal, oil and gas run out.
- Energy Is Never LostGrades 5–8Predict where energy goes — it’s never destroyed; the "lost" bit became heat and sound.
Weather
Ecosystems
Space & Astronomy
- EclipsesGrades 4–7Predict solar or lunar — line up the Sun, Moon and Earth and watch the shadow fall.
- Stars & GalaxiesGrades 4–7Predict what counts as a star — the Sun is one — then zoom out to a galaxy of billions.
- Gravity & OrbitsGrades 5–8Predict what holds a planet in orbit — gravity; cut it and the planet flies off straight.
- Weight in SpaceGrades 4–7Predict where you weigh less — your mass stays the same, but gravity changes your weight.
Geology
- The Rock CycleGrades 4–7Predict what a rock becomes — melt and cool, press, or heat it, and it changes type over time.
- Earth’s LayersGrades 4–7Predict the order inward — crust, mantle, liquid outer core, solid inner core, hotter toward the center.
- Minerals & RocksGrades 4–7Predict mineral or rock — a mineral is one pure substance; a rock is a mixture of mineral grains.
Cells & Microbiology
- Plant vs Animal CellsGrades 4–7Predict which cell — both share a nucleus, but only plant cells have a wall and chloroplasts.
- VirusesGrades 4–7Predict alive or not — a virus is tinier than bacteria and needs a host cell to copy itself.
- Single-Celled LifeGrades 4–7Predict one cell or many — an amoeba does everything to live inside a single cell.
Environment & Climate
Oceans & Marine Life
Extreme Weather & Sky
Space Exploration
- SatellitesGrades 4–7Predict the job and the orbit — satellites fall around Earth while doing GPS, weather and TV.
- Orbit RiderGrades 5–7Meteors knock your ship off its orbit — fire the thrust burst that matches the ring's orbit speed (closer rings are faster), or boost to climb and brake to drop, while real gravity shows why too slow falls in and too fast flies out.
Genetics & Heredity
- DNAGrades 4–7Predict what DNA is — the twisted-ladder code inside cells that tells a body how to grow.
- Dominant & RecessiveGrades 4–7Predict which trait shows — a dominant version wins unless two recessive copies meet.
- Genes & ChromosomesGrades 5–8Predict how they nest — a gene is part of a chromosome, bundled inside the cell’s nucleus.
- MutationsGrades 5–8Predict the effect — a change in the DNA code can be helpful, harmful, or make no difference.
- Gene SquadronGrades 6–8Offspring ships dive out of a Punnett-square formation — line up under each one and fire the genotype or trait it gets from Mom's allele plus Dad's allele.
Evolution & Classification
Making Electricity
Motion & Forces
- AccelerationGrades 4–7Predict the change — speeding up, slowing down or turning all count as acceleration.
- MomentumGrades 5–8Predict the hit — heavier or faster things carry more momentum and are harder to stop.
- Action & ReactionGrades 4–7Predict the push back — every push has an equal, opposite push in return.
- Circular MotionGrades 5–8Predict the pull — a thing moving in a circle is pulled to the center; let go and it flies straight.
- Terminal VelocityGrades 4–7Predict the top speed — a falling thing stops speeding up when air resistance balances gravity.
Waves & Vibrations
- Amplitude & EnergyGrades 4–7Predict the energy — a taller wave carries more; louder sound, bigger splash.
- Wavelength & FrequencyGrades 4–7Predict the trade — crests close together mean high frequency and a short wavelength.
- Light Is a WaveGrades 4–7Predict the spectrum — radio, visible color and X-rays are all light waves of different lengths.
Light & Optics
- LensesGrades 4–7Predict the bend — a bulging lens focuses and magnifies; a caved-in one spreads light out.
- Mixing Light ColorsGrades 4–7Predict the mix — red, green and blue light add up to white, unlike mixing paint.
- Why the Sky Is BlueGrades 4–7Predict the color — air scatters blue light across the sky, and red at sunset.
Chemistry Lab
- The Periodic TableGrades 5–8Predict the spot — all the elements are arranged by their properties, metals to non-metals.
- ElementsGrades 4–7Predict pure or not — an element is made of just one kind of atom, with its own symbol.
- Metals & Non-metalsGrades 4–7Predict the property — metals are shiny and conduct; non-metals are dull and insulate.
- Chemical FormulasGrades 5–8Predict the atoms — a formula like H₂O tells you which atoms and how many.
Body Systems
- BloodGrades 4–7Predict the job — red cells carry oxygen, white cells fight germs, platelets clot a cut.
- The LiverGrades 4–7Predict the job — the liver cleans the blood of toxins and helps process your food.
- Body SystemsGrades 4–7Predict the system — heart and vessels circulate, lungs breathe, and they all work together.
Plate Tectonics
- Plate TectonicsGrades 4–7Predict the motion — Earth’s crust is broken into giant plates that slowly drift on the mantle.
- Continental DriftGrades 4–7Predict the past — the continents were once one landmass, Pangaea, and have drifted apart.
- Faults & EarthquakesGrades 4–7Predict the slip — stress builds where plates grind, then a sudden slip shakes the ground.
- Seafloor SpreadingGrades 5–8Predict the new crust — magma rises at mid-ocean ridges and spreads the seafloor outward.
Science Skills
Common Questions
What science do kids learn in grade 7?
These 74 grade 7 science games cover Forces & Motion, Simple Machines, Matter, Earth & Space, Chemistry, Energy, Weather, Ecosystems, Space & Astronomy, Geology, Cells & Microbiology, Environment & Climate, Oceans & Marine Life, Extreme Weather & Sky, Space Exploration, Genetics & Heredity, Evolution & Classification, Making Electricity, Motion & Forces, Waves & Vibrations, Light & Optics, Chemistry Lab, Body Systems, Plate Tectonics and Science Skills. Each game isolates one big idea, such as why a heavy and a light object fall together or what makes a circuit light a bulb.
How do the predict-observe-explain games work?
The child first predicts what will happen, then watches the real thing play out, then reads a short explanation of why. Checking a guess against the result is what corrects common misconceptions, and it takes only a minute or two per round.
Are these grade 7 science games free?
Yes. Every game is free with no ads, no in-app purchases and no sign-up, and runs in any browser on a phone, tablet or computer.
How long should my child play each day?
Ten to fifteen minutes is plenty. One or two games per sitting, ideally followed by a quick chat about what surprised them or a real-life experiment at home, helps the idea stick.
Science Games for Other Grades
Grade 1 · Grade 2 · Grade 3 · Grade 4 · Grade 5 · Grade 6 · Grade 8
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