Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Exoplanet Hunt
A star dimming slightly or wobbling is enough to reveal a planet no telescope can see.
Atmospheric Stability and Cloud Formation
Whether rising air is warmer than its surroundings decides if clouds tower up or spread flat.
Hubble’s Law and Cosmic Expansion
See how galaxies’ distances relate to their spectral-line shifts, then explore the straight-line slope H₀ and how 1/H₀ reveals the universe’s age.
El Niño and the Southern Oscillation
See how changing trade-wind strength affects upwelling and eastern Pacific temperatures, shifting rain clouds—and the locations of droughts and floods.
Dating Rocks
Use half-lives to find absolute ages, rock layers and cross-cutting relationships to compare relative ages, and index fossils to identify geologic periods.
Kepler’s Laws and Planetary Motion
Stretch the eccentricity to 0.8 and check that the swept area stays constant while all eight planets fall on one T²∝a³ line.
Stellar Evolution & the H-R Diagram
Plot stars by surface temperature and luminosity on the H-R diagram to see how mass determines a star's life cycle.
The Greenhouse Effect
Adjust sunlight strength and greenhouse gas levels to see how the radiative equilibrium temperature shifts and why Earth stays 33°C warmer.
Climate Change and Our Life
Slide through the years and switch emission sources off to see how temperature, glaciers, and sea level change.
Solar System & Eclipses Explorer
Compare radius and density across all eight planets, then step through drifting sunspots and the alignments behind solar and lunar eclipses.
Earth and Sea
Change the wave strength and seafloor material to find out whether a cliff, a sandy beach, or a mudflat takes shape.
The Rock Cycle
Sort rocks as igneous, sedimentary or metamorphic, trace one full cycle from magma, and raise temperature swings and rainfall to compare weathering rates.
Carbon Cycle & Climate Models
Compare the sizes of the carbon reservoirs and change the level of emissions cuts to see how far the temperatures of 2050 and 2100 diverge.
Plate Tectonics and Seismic Waves
Push and pull the plates to form divergent, convergent and transform boundaries, then use the P–S arrival time gap from three stations to pinpoint the epicentre.
Moon Phase Simulator
Move the Moon around Earth to see how the Sun–Earth–Moon positions create the eight lunar phases.
Volcanoes & Earthquakes
Push plates together, slide them past each other, or pull them apart to see how mountains, volcanoes, and earthquakes form.
Air Masses and Fronts
Pick a birthplace to form Korea's four air masses, then stand ahead of and behind a front to see how the weather changes as it passes.
Ocean Salinity and Temperature
Adjust evaporation, rainfall, and wind to see how sea temperature, the mixed layer, and the constant ratio of dissolved salts respond.
Parallax and Stellar Distance
Adjust parallax, brightness, and distance to see how star distances are found and why the expanding universe has no center.
Erosion and Deposition
Change slope, rainfall, or grass cover one at a time to see where soil is eroded and where it piles up.
Humidity & Clouds
Read the humidity from the dry- and wet-bulb temperature difference, then cool the air to watch dew, fog and clouds form.
Air Pressure and Wind
Change the temperature of sea and land to see how air flows from high to low pressure as sea and land breezes.
Rock Layers and Fossils
Stack gravel, sand, and mud into layers and clear the dirt to uncover fossils, discovering that the deeper a layer sits, the older it is.
The Solar System
Tap each of the eight planets to compare its order from the Sun, size against Earth, and year length.