Physics & Earth Science
A middle-school science track for motion, forces, energy, waves, Earth systems, weather, climate, astronomy, and human impact using models and evidence.
Physics & Earth Science
A middle-school science track for motion, forces, energy, waves, Earth systems, weather, climate, astronomy, and human impact using models and evidence.
- Explain motion, force, energy, and waves with diagrams, data, and units.
- Use Earth-system models to connect rocks, water, atmosphere, weather, climate, and space.
- Write evidence-based science explanations instead of memorized definitions.
Study links
Unit sequence
Start at unit 1. Move forward only after the checks are clean.
- 01
Motion, forces, and graph evidence
80 checks- Use position, speed, velocity, acceleration, and force correctly.
- Read motion graphs and connect slope to meaning.
Practice: Analyze a motion graph and write what the object is doing in each interval.
Open practice checks
Sequenced original practice checksMove in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
6 shown / 80 checked answersExercise pathFoundation: 25Developing: 25Proficient: 24Advanced: 6Start the next sequenced check: #1 Speed. Do not jump ahead until this one is correct.
Learning analysis0/80Tried0Correct0%MasteryWeakest facet: Concept
#1SpeedFluencyfoundationNextSet 2: an object travels 28 m in 4 s. What is its speed?
#2AccelerationFluencydevelopingSet 2: speed changes from 7 m/s to 12 m/s in 5 s. What is acceleration?
#3SpeedFluencyfoundationSet 1: an object travels 12 m in 2 s. What is its speed?
#4AccelerationFluencydevelopingSet 1: speed changes from 6 m/s to 9 m/s in 3 s. What is acceleration?
#5ForceApplicationdevelopingSet 1: mass 6 kg, acceleration 4 m/s^2. What is net force?
#6Wave speedApplicationdevelopingSet 1: frequency 5 Hz, wavelength 6 m. What is wave speed?
- 02
Energy, waves, and transfers
80 checks- Track kinetic, potential, thermal, sound, and light energy transfers.
- Describe wave properties and interactions.
Practice: Build an energy-transfer diagram for one everyday system and label evidence for each transfer.
Open practice checks
Sequenced original practice checksMove in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
6 shown / 80 checked answersExercise pathProficient: 24Developing: 25Foundation: 25Advanced: 6Start the next sequenced check: #1 Climate. Do not jump ahead until this one is correct.
Learning analysis0/80Tried0Correct0%MasteryWeakest facet: Concept
#1ClimateAnalysisproficientNextSet 3: which evidence best supports a climate claim?
#2Moon cycleApplicationdevelopingSet 3: about how many days are in 5 lunar cycles if one cycle is 29 days?
#3ForceApplicationdevelopingSet 1: mass 7 kg, acceleration 4 m/s^2. What is net force?
#4Wave speedApplicationdevelopingSet 1: frequency 5 Hz, wavelength 7 m. What is wave speed?
#5Energy transferConceptfoundationSet 2: a lamp changing electrical energy into light and thermal energy shows:
#6Scale modelExam ReadinessadvancedSet 2: a model uses 1 cm for 8 km. How many km does 5 cm represent?
- 03
Earth systems, rocks, and geologic change
80 checks- Model the geosphere, hydrosphere, atmosphere, and biosphere as interacting systems.
- Explain rocks, plate motion, erosion, and geologic time with evidence.
Practice: Create a systems diagram for one Earth process and annotate cause-effect arrows.
Open practice checks
Sequenced original practice checksMove in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
6 shown / 80 checked answersExercise pathProficient: 24Foundation: 25Developing: 25Advanced: 6Start the next sequenced check: #1 Potential energy. Do not jump ahead until this one is correct.
Learning analysis0/80Tried0Correct0%MasteryWeakest facet: Concept
#1Potential energyFluencyproficientNextSet 5: using g = 10, what is mgh for mass 4 kg and height 12 m?
#2Graph slopeConceptfoundationSet 5: on a position-time graph, a steeper line means:
#3Potential energyFluencyproficientSet 1: using g = 10, what is mgh for mass 6 kg and height 8 m?
#4Graph slopeConceptfoundationSet 1: on a position-time graph, a steeper line means:
#5Erosion rateApplicationproficientSet 4: a river erodes 44 cm over 4 years. What is the yearly rate?
#6Weather averageAnalysisproficientSet 4: temperatures are 71, 73, 75. What is the average?
- 04
Weather, climate, and human impact
80 checks- Use atmosphere, water cycle, ocean, and climate data to explain patterns.
- Separate weather observations from climate trends.
Practice: Compare two weather or climate data displays and write a claim with one limitation.
Open practice checks
Sequenced original practice checksMove in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
6 shown / 80 checked answersExercise pathFoundation: 25Developing: 25Proficient: 24Advanced: 6Start the next sequenced check: #1 Speed. Do not jump ahead until this one is correct.
Learning analysis0/80Tried0Correct0%MasteryWeakest facet: Concept
#1SpeedFluencyfoundationNextSet 7: an object travels 60 m in 4 s. What is its speed?
#2AccelerationFluencydevelopingSet 7: speed changes from 15 m/s to 20 m/s in 5 s. What is acceleration?
#3Erosion rateApplicationproficientSet 1: a river erodes 27 cm over 3 years. What is the yearly rate?
#4Weather averageAnalysisproficientSet 1: temperatures are 69, 71, 73. What is the average?
#5ForceApplicationdevelopingSet 6: mass 14 kg, acceleration 4 m/s^2. What is net force?
#6Wave speedApplicationdevelopingSet 6: frequency 5 Hz, wavelength 14 m. What is wave speed?
- 05
Astronomy and science explanation portfolio
80 checks- Use scale, gravity, seasons, moon phases, and solar-system models.
- Write complete explanations using models, data, and uncertainty.
Practice: Submit a science portfolio with one physics explanation and one Earth/space explanation.
Open practice checks
Sequenced original practice checksMove in order: foundation, transfer, analysis, timed readiness, then metacognitive repair.
6 shown / 80 checked answersExercise pathProficient: 24Developing: 25Foundation: 25Advanced: 6Start the next sequenced check: #1 Climate. Do not jump ahead until this one is correct.
Learning analysis0/80Tried0Correct0%MasteryWeakest facet: Concept
#1ClimateAnalysisproficientNextSet 8: which evidence best supports a climate claim?
#2Moon cycleApplicationdevelopingSet 8: about how many days are in 5 lunar cycles if one cycle is 29 days?
#3ClimateAnalysisproficientSet 1: which evidence best supports a climate claim?
#4Moon cycleApplicationdevelopingSet 1: about how many days are in 6 lunar cycles if one cycle is 29 days?
#5Energy transferConceptfoundationSet 7: a lamp changing electrical energy into light and thermal energy shows:
#6Scale modelExam ReadinessadvancedSet 7: a model uses 1 cm for 16 km. How many km does 5 cm represent?