Combined assessments + per-course quick quizzes (with answer keys) + 3 rubrics. All quiz facts are based on NASA official data.
Quiz A · Grades 3–5 (10 questions)
- What planet do we live on? 2. How many major planets are in the solar system? 3. The Sun is a (planet/star/moon)? 4. Day and night alternate because of (Earth's rotation/Moon's rotation)? 5. What is the fourth planet from the Sun?
- About what percentage of Earth's surface is covered by ocean (~71%)? 7. What mainly causes tides? 8. What protects us from the Sun's harmful rays (atmosphere)? 9. The main reason for seasons is (Earth's axial tilt)? 10. Write one small thing you can do to protect Earth's environment.
Answer Key: 1 Earth; 2 Eight; 3 Star; 4 Earth's rotation; 5 Mars; 6 About 71%; 7 The Moon; 8 Atmosphere; 9 Earth's axial tilt of about 23.5°; 10 Open-ended (reasonable answer accepted).
Quiz B · Grades 6–8 (10 questions)
- Write the eight planets in order. 2. What is the essential difference between terrestrial and giant planets? 3. Which planet has the hottest surface and why? 4. Between which two planets is the asteroid belt? 5. What powers the Perseverance Mars rover?
- About how fast do low-Earth-orbit objects travel? 7. About how long does the space station take to orbit Earth? 8. About how many km is 1 AU? 9. Why do water rockets need fins (center of pressure/center of gravity)? 10. What is the accurate reason astronauts "float" on the space station?
Answer Key: 1 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune; 2 Rocky/metal vs. gas-dominated, huge difference in size and mass; 3 Venus: thick CO₂ greenhouse effect (surface about 465°C); 4 Between Mars and Jupiter; 5 MMRTG nuclear power (plutonium-238 decay heat); 6 About 7.8 km/s; 7 About 92 minutes; 8 About 150 million km; 9 Move center of pressure behind center of gravity for stable flight; 10 Continuous free fall, not "no gravity."
Quiz C · Grades 9–12 (8 questions)
- Write and explain the thrust equation. 2. Calculate: ṁ = 250 kg/s, ve = 3,000 m/s, find thrust. 3. What is the physical meaning of specific impulse Isp? 4. Calculate: Isp = 300 s, m₀/mf = 12, find Δv.
- Concept: Why can multistage rockets increase final speed? 6. Where does the difference between the 9.4 km/s orbital delta-v budget and 7.8 km/s orbital speed go? 7. Earth's escape velocity? 8. GEO altitude and characteristics?
Answer Key: 1 F = ṁ·ve (mass flow × effective exhaust velocity, from momentum conservation/Newton's third law); 2 750 kN; 3 Impulse per unit of propellant (seconds), measuring fuel efficiency; 4 Δv = 300×9.81×ln12 ≈ 7.3 km/s; 5 Discarding empty tanks reduces dry mass, raising mass ratio and thus ln(m₀/mf); 6 Gravity and aerodynamic losses ~1.5–2 km/s; 7 About 11.2 km/s; 8 About 35,786 km, period synchronized with Earth's rotation, stationary relative to the ground.
Rubric 1 · Student Projects (4 dimensions × 4 levels, each 1–4 points)
| Dimension | 4 · Exemplary | 3 · Proficient | 2 · Developing | 1 · Beginning |
|---|---|---|---|---|
| Scientific Explanation | Uses core concepts accurately (e.g., free fall, center of pressure) and can correct errors | Concepts correct, explanation complete | Partially correct, with gaps | Major conceptual errors |
| Engineering Implementation | Meets criteria with innovative iteration records | Completed as required | Basically complete, many issues | Not completed / off target |
| Data & Records | Complete records, variable analysis, conclusions drawn | Records complete, analysis mostly adequate | Records incomplete | Almost no records |
| Safety & Collaboration | Fully compliant and proactively reminds teammates | Compliant | Corrects after reminder | Violation or refuses to cooperate |
For water-rocket projects, full compliance with Safety Notes is a prerequisite for scoring 2 or above on Safety & Collaboration.
Rubric 2 · Classroom Presentations (4 dimensions × 4 levels)
| Dimension | 4 | 3 | 2 | 1 |
|---|---|---|---|---|
| Content Accuracy | All facts correct and sourced | Mostly accurate | Minor factual errors | Many errors |
| Structure & Delivery | Clear logic, good time control | Complete | Disconnected | Hard to follow |
| Data Use | Cites real data and explains meaning | Cites data | Cites but does not explain | No data |
| Team Roles | Roles clear, smooth transitions | Balanced participation | One person does most | One person does everything |
Per-Course Quizzes · 5-question quick checks for each course (with answer keys)
Q · The Solar System (pairs with the-solar-system)
- Write the eight planets from closest to farthest from the Sun. 2. About what percentage of the solar system's total mass does the Sun contain? 3. Which planet has the hottest surface and why? 4. About how many Earths could fit inside Jupiter by volume? 5. About how many km is 1 AU? How long does light take to travel from the Sun to Earth?
Answer Key: 1 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune; 2 About 99.8%; 3 Venus: thick CO₂ greenhouse effect (surface about 465°C); 4 About 1,300; 5 About 150 million km, about 8 minutes 20 seconds.
Q · Rocket Science Basics (pairs with rocket-science-basics)
- What is the direct principle that moves a rocket forward? 2. Which fuel combination has the highest specific impulse (~450 s)? 3. Write the Tsiolkovsky rocket equation. 4. Where does the difference between the 7.8 km/s orbital speed and 9.4 km/s delta-v budget go? 5. What is Earth's escape velocity?
Answer Key: 1 Newton's third law: expelling mass backward produces a reaction force (not "pushing against air"); 2 Liquid hydrogen / liquid oxygen; 3 Δv = Isp·g₀·ln(m₀/mf); 4 Gravity and aerodynamic losses ~1.5–2 km/s; 5 About 11.2 km/s.
Q · Life in Space (pairs with life-in-space)
- About what altitude and speed does the ISS fly? 2. About how long is one orbit, and how many sunrises per day? 3. Without exercise, about how much bone density is lost per month at most? What is the countermeasure? 4. The space station recycles more than what percentage of water? 5. What is the accurate reason for "weightlessness"?
Answer Key: 1 About 400 km / 7.7 km/s; 2 About 92 minutes / about 16 times; 3 About 1%, addressed by about 2 hours of daily exercise; 4 90% (cabin humidity and urine recycling); 5 Continuous free fall, not "no gravity."
Q · Our Amazing Earth (pairs with our-amazing-earth)
- How long does Earth rotate once? 2. What are the two most abundant gases in the atmosphere? 3. About what percentage of Earth's surface is covered by ocean? What percentage of all water is saline? 4. What is the main cause of seasons? 5. About how far is the Moon from Earth?
Answer Key: 1 About 24 hours; 2 Nitrogen ~78%, oxygen ~21%; 3 About 71% / about 97%; 4 Earth's axial tilt of about 23.5°; 5 About 384,000 km.
Leveled comprehensive quizzes are shown above as Quiz A/B/C (for start/end-of-term diagnostics); the four tables above are in-class 5-question quick checks. Teachers can mix and match to build their own quizzes.
Rubric 3 · Course Unit Implementation (teacher self-assessment, 4 dimensions × 4 levels)
| Dimension | 4 | 3 | 2 | 1 |
|---|---|---|---|---|
| Objective Achievement | Students can independently restate core concepts and apply them to new contexts | Mostly achieved | Half achieved | Few achieved |
| Real Data Use | Uses real launch/celestial data from this site and explains it | Uses real data | Uses only textbook data | No data component |
| Safety Execution | Follows Safety Notes throughout and students are aware | Compliant | Corrects after reminder | Violation occurred |
| Assessment Loop | Pre-, quick and post-assessments compared | Two assessments | One assessment | No assessment |
Rubric mapping: Rubric 1 → 4 student projects (with water-rocket safety prerequisite); Rubric 2 → any team presentation; Rubric 3 → unit implementation self-assessment for the 4 courses.
Verification Sources: All questions and answers are based on NASA public data. Rubric dimensions reference NGSS science practices (nextgenscience.org).