🇬🇧 English Vocabulary Crossword Puzzle

15 Across & 15 Down words · Instant green check when a letter is correct

CEFR B2 Astrophysics and Cosmology

Solved: 0 / 30 Words

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➡ Across 15 Words

2. A rapidly rotating neutron star that emits regular pulses of radiation
3. The unknown force causing the accelerating expansion of the universe
6. A powerful stellar explosion that occurs at the end of a massive star's life
8. The rhythmic expansion and contraction of a variable star
10. Preposition: light ___ distant stars takes years to reach us
15. Past tense: researchers ___ the mass of the exoplanet using transit data
16. A nearly massless particle that rarely interacts with matter and comes from the Sun
17. Preposition: astronomers know ___ the composition of stars from their spectra
18. A small rocky body orbiting the Sun, mainly found in the belt between Mars and Jupiter
21. The total amount of energy emitted by a star or galaxy per unit time
22. The range of wavelengths of electromagnetic radiation from a celestial object
24. Preposition: the asteroid belt lies ___ Mars and Jupiter
26. A mysterious form of matter that does not emit light but affects galactic motion
27. Present participle: the universe is ___ faster than previously thought
28. Past tense: astronomers ___ a distant galaxy through the telescope

⬇ Down 15 Words

1. The increase in wavelength of light from objects moving away, indicating cosmic expansion
2. The apparent shift in position of a star due to Earth's motion around the Sun
4. A planet that orbits a star outside our solar system
5. Past tense: the massive star ___ into a black hole after the supernova
6. A point in space-time where gravitational forces are thought to become infinite
7. The rapid expansion of the early universe just after the Big Bang
9. Past tense: the new images ___ thousands of previously unknown galaxies
11. A measure of the brightness of a celestial object
12. An instrument used to observe distant celestial objects
13. Past tense: scientists ___ the redshift of the quasar to determine its distance
14. Past tense: the team ___ gravitational waves from merging black holes
19. Past tense: astronomers ___ a new moon orbiting Jupiter
20. Past tense: the pulsar ___ regular radio pulses
23. The universe seen as a well-ordered whole
25. Past tense: astronomers ___ the age of the universe at 13.8 billion years

📚 Study Guide: CEFR B2 (Upper-Intermediate) Vocabulary Focus

This CEFR B2 (Upper-Intermediate) English crossword challenges you with nuanced academic, professional, and analytical English vocabulary around "Astrophysics and Cosmology". Use intersecting Across and Down letters to deduce advanced words from their precise definitions.

1. Active Recall Strategy

Read the Across and Down clues in English first and try to picture the concept before typing. Guessing even 2 or 3 intersecting letters activates deeper lexical memory.

2. Instant Green Orthographic Check

Every correct letter turns green immediately and locks in place. Use these confirmed anchor letters to unlock crossing words without needing a dictionary.

3. Reinforce with Graded Stories

After completing all 30 words, click Next Random B2 Quiz or read our CEFR B2 English Stories to see these words in natural sentences.

🧠 Master English Vocabulary with Interactive CEFR Crossword Puzzles (A1 to B2)

Building a strong, active English vocabulary requires more than memorizing isolated word lists. When you solve an English vocabulary crossword puzzle on StudyWithStory, your brain engages in active retrieval—reading a clear English definition and reconstructing the exact word letter by letter. Each puzzle is structured with 15 Across and 15 Down words (30 target words per quiz) carefully graded to the Common European Framework of Reference for Languages (CEFR).

Why Solving English Crosswords Accelerates Language Fluency

Thinking Directly in English: All clues are written in clear, level-appropriate English definitions without native-language crutches, training you to understand meaning from context.
Spelling & Letter-Pattern Mastery: Intersecting words highlight common English roots, prefixes, vowel combinations, and suffixes while instant green letter validation prevents spelling errors from becoming habits.
Unlimited Topic Variety: Practice hundreds of pre-built quizzes using the Next Random Quiz button, or enter any custom subject—from Airport & Travel to Science & Technology—to generate a brand-new AI crossword in seconds.

Choose Your CEFR English Crossword Level (A1, A2, B1, B2)

🌱 CEFR A1 · Beginner Crosswords

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🚀 CEFR A2 · Elementary Crosswords

Ideal for learners expanding into daily routines, travel & airports, shopping, hobbies, weather, health, and practical communication vocabulary.

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📘 CEFR B1 · Intermediate Crosswords

Focused on independent English users practicing career, education, environment, media, relationships, and expressive vocabulary for work and study.

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🎓 CEFR B2 · Upper-Intermediate Crosswords

Built for advanced learners preparing for IELTS, TOEFL, or professional fluency with abstract concepts, business strategy, science, and academic vocabulary.

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Frequently Asked Questions (FAQ)

How do English crossword puzzles improve vocabulary retention?

Crossword puzzles use active recall and orthographic mapping. Instead of passively recognizing a word in a multiple-choice list, your brain retrieves the exact English word from a definition clue and verifies its spelling letter by letter, strengthening long-term memory.

Which CEFR English level (A1, A2, B1, or B2) should I choose?

Choose A1 (Beginner) if you know 500–1,000 basic everyday words; A2 (Elementary) for daily life, travel, and routine conversations; B1 (Intermediate) for work, school, and descriptive topics; or B2 (Upper-Intermediate) for academic, business, and abstract vocabulary.

How does the Next Random Quiz button work?

Clicking the "Next Random Crossword / Quiz" button immediately loads an unseen crossword puzzle from our database matching your selected CEFR level (A1, A2, B1, or B2), allowing you to practice hundreds of unique vocabulary sets without repetition.

What happens when I type a letter in the crossword grid?

Every square uses instant letter validation. As soon as you type the correct letter, the square turns bright green (#22c55e) and locks in place. If you type a wrong letter, no distracting red error is shown—simply type over it or press Backspace.

Can I create a custom English crossword puzzle on my own topic?

Yes! Select your CEFR level (A1–B2), type any educational topic (such as Airport, Kitchen, Space, or Medicine) into the topic box, and click "Create with AI". Our system generates 15 Across and 15 Down words tailored to your topic and saves the puzzle to the community library.

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