NGSS high school physical science labs you can run online
Use standards codes to choose online physical science experiments, plan fair comparisons, and connect model observations with graphs and measured quantities.
A standards code can help you find an experiment, but it does not tell you what to change first or how to interpret a graph. Once you have selected a course, you still need a testable question, a controlled comparison, and observations that answer that question. Online physical science experiments are useful places to organize those choices before or after a classroom investigation.
Scivra's public catalog lists its course alignments with NGSS codes. The standards index connects each listed code with the relevant course detail pages. Use that connection to find an experiment in the area you are studying, then read the course description for its apparatus, adjustable conditions, and measurements. An alignment label identifies a connection; it does not promise complete coverage of a standard or a particular learning outcome.
Start with the experiment's question
Choose a question that the available setup can answer. “Study motion” could mean position, acceleration, momentum, or energy. “Compare the acceleration when the cart's load changes but the hanging mass stays fixed” describes a particular trial and the quantity you will measure.
Newton's Second Law is listed with NGSS HS-PS2-1. Its cart and pulley let you investigate force and the total moving mass in separate comparisons. Moving weights from the cart to the hanger is different from adding new weights from the equipment supply. Write that difference into your plan, because it changes which quantities are controlled.
A useful experiment record starts with the setup and question rather than the result. Include the initial configuration, the variable you change, and the measurement you expect to compare. That makes the later graph easier to interpret and the investigation easier to repeat.
Compare the system before and after an interaction
Momentum & Collisions, listed with NGSS HS-PS2-2, provides bouncing, sticking, and separating carts. The experiment records the motion of each cart and of the combined system. It also lets you compare kinetic energy and the center of mass.
Before a run, choose the system you will analyze. A single cart exchanges momentum during a collision; the two-cart account asks a different question. Retain the direction signs in the velocity measurements, and identify any external effects included in the selected conditions.
Afterward, compare measured quantities across the same event. Avoid using a final animation frame as the entire evidence record. The before-and-after values and force-time observations let you examine the interaction more closely and distinguish a change in one cart from a change in the pair.
Follow energy through the apparatus
The catalog lists Energy on a Track with NGSS HS-PS3-1 and HS-PS3-2. A spring launches a cart, and the measurements follow it through changes in speed and height. Different track shapes, loads, and friction conditions provide several possible investigations.
Select a pair of trials before changing everything at once. You might compare track shapes at the same initial setting, or compare a run with and without the friction pad. Keep the spring-release condition visible in the record, because a partly released spring changes the energy available for motion.
Use the energy account alongside the measured height and speed. Name where energy is stored or transferred during that trial, and keep the system boundary consistent. A conclusion tied to those observations is more specific than an unqualified statement that the cart “lost energy.”
Investigate a reaction's progress
Physical science also includes chemical changes. Reaction Rates is listed with NGSS HS-PS1-5 and follows gas produced by magnesium reacting with acid. The available conditions include concentration, temperature, exposed surface area, and a catalyst.
Choose one of those conditions for a controlled comparison. Then examine the gas-volume curve rather than just the moment when bubbles appear. Its early slope provides a rate observation, while the end of the curve records the final collected quantity. These are related measurements with different meanings.
The particle and energy views can accompany the recorded run. Compare their representation of collisions and activation with the actual curve you observed. Keep track of the reactant amounts when interpreting whether a change affects the time course, the final quantity, or both.
Connect wave patterns with measurements
Ripple Tank Waves, listed with NGSS HS-PS4-1, uses a water surface to compare reflection, refraction, diffraction, and interference. A wall, shallow plate, gap, and paired dippers create different conditions within the same tank.
Pick the effect you want to investigate and the measurement it needs. Wavelength and frequency readings support a speed comparison. Angles describe the reflected or refracted direction. Probe positions and source distances provide evidence for the paired-source pattern. A still photograph of a striking wave pattern does not supply all of those quantities by itself.
Compare the tank observation with the inside view for that setting. Local water motion, wavefronts, and individual-source contributions provide different representations of the same trial. Recording which view and measurement you used keeps your interpretation connected to the experiment rather than to a general diagram.
Turn the activity into a record you can discuss
End with a small evidence set: your question, initial prediction, trial settings, measured comparison, and a graph or observation that supports the interpretation. Add the limitation most relevant to that trial. A model assumption, a measurement resolution, or an uncontrolled condition can each matter for a different reason.
For a parent, the record shows what the student investigated beyond opening a page. For a student, it offers something concrete to compare with class notes or bring to a teacher. If a result raises another question, plan a new trial that changes one clearly named condition. Keep the original record so the two investigations remain distinguishable.
Choose a first lab
Start with the free Newton's Second Law demonstration. After signing in, you can begin the seven-day free period for Cell Signaling, Ripple Tank Waves, and Flame Tests & Atomic Spectra. The course library brings the experiments and their listed alignments together so you can choose the next comparison.