Science · Classes 9
Where did the energy go?
Can a slower cart still conserve energy?
Source context checked · detailed mapping provisionalOpen investigation →Opening your next discovery…
Opening your next discovery…
Change one variable, observe carefully and build an explanation from evidence.
The full inspected title inventory includes chapters and concepts still awaiting activities. Inspect this class and subject in the coverage matrix
MORE QUESTIONS TO TEST
3 working activities. Source context and detailed mapping status are shown separately.
Can a slower cart still conserve energy?
Source context checked · detailed mapping provisionalOpen investigation →How can a longer effort arm reduce the effort force?
Source context checked · detailed mapping provisionalOpen investigation →Must two bodies settle at the simple average of their temperatures?
Mapping provisionalOpen investigation →Open a chapter to see its learning path and the availability of every experience.
Original preparation pathway: control a variable, observe a result and evaluate a model. The newly audited IX science chapters now have separate subject pathways.
Compare enlarged plant and animal cells, relating selected structures to their functions.
Distinguish position, displacement and distance, and test a constant-acceleration model.
Investigate net force, mass and acceleration through controlled cargo trials.
Connect a pressure trace, longitudinal movement, frequency and wavelength.
Build particle-count representations and distinguish isotope changes from charge changes.
Plan and perform a multi-stage separation while retaining and accounting for every fraction.
What must be connected for the bulb to light?
Connect the components, close the switch and investigate a continuous electrical path.
What do these plant and animal cells share, and what differs?
Compare enlarged plant and animal cutaways and test the function of a distinguishing structure.
How can a selective membrane change water movement while solute stays on its own side?
Compare a selective membrane with a blocked control and track water separately from solute.
How does a change in velocity change position over time?
Move between a position, a measurement and a graph while changing one parameter at a time.
How does changing only the load change acceleration at the same net force?
Run a rover cargo experiment, record fair comparisons and predict how net force moves a different load.
When a source changes frequency in the same medium, what must happen to wavelength?
Investigate a pressure signal, track material markers and compare frequency without confusing it with speed.
How can you change mass or charge without changing the element?
Build an isotope and an ion by changing the correct particles, with both dragging and keyboard controls.
Which sequence recovers all components, and why can another sequence leave a mixture?
Plan a multi-stage separation and account for sand, dissolved salt and water in every resulting container.
Concepts connect across chapters, classes and subjects.
Open the learning mapProgress stays in this browser. Interacting records an attempt; completion requires a prediction, required workspace tasks, a passed check and a reflection. Earlier completions are not automatically upgraded.
Suggested next: Light the circuitOpen a lab and change a variable. Your learning trail will begin here.
Official title list inspected. Objectives below are original planning proposals unless a chapter or syllabus section is separately inspected. Inspected scope: contents.
New IX-specific course inspected successfully. Biology topics include Cell, Tissues, Reproduction, Diversity. Broad stage competencies on preceding pages are not treated as Grade IX topic placement. Inspected scope: curriculum.
Current body inspected for mixture properties, filtration criteria, distillation, crystallisation and chromatography. Three-component cargo, exact masses, apparatus choices and all illustrations are original; only a bounded separation objective is addressed. SHA-256 aad4f4a0a9bcfd429f95454daebaba1ecd10c3e73ce2595250120af60b74b396.
Current body inspected for net force, friction, second law and controlled investigations. Original rover experiment simplifies friction to an independently chosen constant force threshold. Newton’s third law, momentum and full chapter coverage are not claimed. SHA-256 29b329c7508ffa12ef5114ebe0c9f5602414981aacb7075de37a7869c12351b9.
Current body inspected for particle identities, atomic/mass number, first-18 electron distributions and isotopes. Ion construction is an explicitly identified application of charge accounting; arbitrary allowed nuclei are not claimed stable. No figure or wording copied. SHA-256 b400e01b4d4f045c97c2bfee4508cc1dd1d1f43fa455dc0758e6f21b42d10124.
Current body inspected for longitudinal sound, pressure graphs, frequency, wavelength, amplitude, speed and pitch. Original numerical sound wave does not claim measured loudness, real material speed or coverage of reflection and hearing. SHA-256 0ac97e4f2c0a983147f3d5a4e34df5f776f26de88fa8f4ec4e4eda2272e5f49e.
Official index inspected. Class IX and Class X have separate documents; subject structures must not be copied between them.
Original activities, questions, reading passages and fictional archives. A curricular connection does not make a Bodhi activity an official NCERT exercise. Broader grade adaptation awaits educator review.