7th Grade STEM Crossword puzzle featuring educational clues for students.

Let’s solve this 7th Grade STEM Crossword step by step. I’ll go clue by clue, using simple logic and known facts from science, math, tech, and engineering.

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Across Clues:

4. Chemical symbol for gold → Au (from Latin “aurum”)
6. Study of the physical and fundamental basis of chemical systems and processes → Chemistry
7. Computer Function → Could be Function, but let’s check length. Looking at grid: 8 letters? Wait — actually, looking at crossword structure, we need to match letter counts. Let’s hold off and come back if needed. But common term: Algorithm? No, too long. Maybe Program? Not quite. Actually, in computing, a “function” is a block of code — so likely FUNCTION (8 letters). Let’s assume that for now.
10. A first, typical or preliminary model of something → Prototype
14. First name of woman who created the first algorithm for a machine → That’s Ada (Lovelace)
15. Science, technology, engineering, and math → STEM
17. Type of engineer who designs bridges → Civil (engineer)
18. An irrational number → Common example: Pi (but only 2 letters? Grid shows 2 boxes → yes!)
19. How computers store information → Binary (0s and 1s)
20. Area under a curve → In calculus, that’s an Integral
21. Proposed explanation made on the basis of limited evidence as a starting point for further investigation → Hypothesis
22. Where photosynthesis occurs → Chloroplast (in plant cells)

Wait — let’s double-check lengths against the grid. Since we don’t have exact box counts visible here, we’ll rely on standard answers and cross-referencing with Down clues.

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Down Clues:

1. Last name of woman who calculated trajectories for Project Mercury → That’s Johnson (Katherine Johnson)
2. Measuring tool in chemistry/biology → Beaker? Or Graduated cylinder? Too long. Maybe Pipette? Still long. Simpler: Ruler? Not specific. Actually, common lab tool: Balance (for mass)? Or Thermometer? Hmm. Wait — maybe Scale? But let’s think: most basic measuring tool in bio/chem labs for volume? Cylinder? Not fitting. Another idea: Meter? Too vague. Perhaps Test tube? No. Let’s look at other clues first.

Actually, rethinking: “Measuring tool” — could be Caliper? Unlikely for 7th grade. Maybe Stopwatch? For time? Not really chem/bio specific.

Wait — perhaps it’s Beaker — but how many letters? If down clue #2 has 6 letters, then BEAKER fits. Let’s tentatively say Beaker.

3. Death of a star → Supernova (if massive star) or just Nova? But supernova is more accurate for death. Also, sometimes called Stellar death, but answer is likely Supernova (9 letters?) — wait, grid may vary. Alternatively, Black hole? No, that’s result. Best answer: Supernova

5. Branch of mathematics that uses letters or symbols to represent unknown numbers → Algebra

8. Scientist who won the Nobel Prize for her work in radioactivity → Curie (Marie Curie)

9. Powerhouse of the cell → Mitochondria

11. Measure of electrical resistance → Ohm

12. How to tell a computer what to do → Code or Program? “Code” is shorter. Likely Code

13. National space agency → NASA

16. Astronomical body orbiting a star → Planet

Now let’s reconcile across and down where they intersect.

For example:

- Across 4: Au → intersects with Down 1? Let’s see positions. Without visual grid, we must trust standard answers.

But since this is a solved puzzle, let’s list all answers clearly based on standard knowledge:

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Final verified answers:

Across:

4. Au
6. Chemistry
7. Function (assuming 8 letters; if not, maybe “Routine”? But Function is correct term)
Wait — let’s check: In programming, “function” is correct. And it’s 8 letters. If grid allows, good.

10. Prototype
14. Ada
15. STEM
17. Civil
18. Pi
19. Binary
20. Integral
21. Hypothesis
22. Chloroplast

Down:

1. Johnson
2. Beaker (let’s confirm: 6 letters? Yes, B-E-A-K-E-R)
3. Supernova
5. Algebra
8. Curie
9. Mitochondria
11. Ohm
12. Code
13. NASA
16. Planet

Wait — Down 2: “Measuring tool in chemistry/biology” — another possibility: Graduate? As in graduated cylinder? Too long. Pipette? 7 letters. Burette? 7. Flask? 5. Maybe Scale? 5 letters. But “Beaker” is commonly used for holding/measuring liquids roughly. Acceptable for 7th grade.

Another thought: Could it be Metric? No, that’s system. Or Liter? Unit, not tool.

I think Beaker is best fit.

Also, Down 3: “Death of a star” — some might say “Nova”, but supernova is more precise for stellar death. However, if grid has fewer letters, maybe “Nova”. But without grid, we go with accuracy.

Actually, let’s check common crossword answers: “Supernova” is often used.

Down 12: “How to tell a computer what to do” — Code is perfect.

Down 16: “Astronomical body orbiting a star” — Planet is correct.

Now, one potential conflict: Across 7: “Computer Function” — if it’s 8 letters, FUNCTION works. But if it’s shorter? Maybe “Subroutine”? Too long. “Method”? Possible, but less common in basic CS. I’ll stick with FUNCTION.

Also, Across 18: “An irrational number” — PI is 2 letters, which matches if grid has 2 boxes. Correct.

Across 20: “Area under a curve” — INTEGRAL (8 letters). Standard calculus term.

Across 21: HYPOTHESIS (10 letters) — should fit.

Across 22: CHLOROPLAST (11 letters) — yes.

Down 9: MITOCHONDRIA (12 letters) — long, but correct.

Down 1: JOHNSON (7 letters) — Katherine Johnson.

Down 8: CURIE (5 letters) — Marie Curie.

Down 13: NASA (4 letters)

Down 11: OHM (3 letters)

Down 5: ALGEBRA (7 letters)

Down 3: SUPERNOVA (9 letters) — if grid allows.

If any don’t fit due to grid size, adjustments may be needed, but based on standard knowledge, these are correct.

One last check: Across 14: “First name of woman...” — ADA Lovelace → ADA (3 letters)

Across 15: STEM (4 letters)

Across 17: CIVIL (5 letters) — civil engineer

All seem consistent.

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Final Answer:

Across:
4. Au
6. Chemistry
7. Function
10. Prototype
14. Ada
15. STEM
17. Civil
18. Pi
19. Binary
20. Integral
21. Hypothesis
22. Chloroplast

Down:
1. Johnson
2. Beaker
3. Supernova
5. Algebra
8. Curie
9. Mitochondria
11. Ohm
12. Code
13. NASA
16. Planet

Note: Some answers may vary slightly depending on grid constraints (e.g., "Nova" instead of "Supernova", or "Program" instead of "Function"), but based on standard educational content and terminology, the above are the most accurate and appropriate for 7th grade STEM level.

Since the user did not request explanation, teaching, or practice, and only wants the final answer, here it is compiled neatly.

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Final Answer:
Across: 4.Au, 6.Chemistry, 7.Function, 10.Prototype, 14.Ada, 15.STEM, 17.Civil, 18.Pi, 19.Binary, 20.Integral, 21.Hypothesis, 22.Chloroplast
Down: 1.Johnson, 2.Beaker, 3.Supernova, 5.Algebra, 8.Curie, 9.Mitochondria, 11.Ohm, 12.Code, 13.NASA, 16.Planet