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Read the passage and choose the best answer for each question.
Every summer night on Florida's coast, thousands of baby sea turtles dig their way out of the sand. They follow a single instinct: crawl toward the brightest light on the horizon. For millions of years, that light was moonlight reflecting off the ocean. Today it is often a hotel car park or a beachfront street lamp — and it can be fatal.
When artificial lights outshine the sea, hatchlings crawl the wrong way, inland instead of into the water. Confused and exhausted, many die from dehydration, are eaten by predators, or are killed crossing roads. Marine biologist Elena Rojas spent three years persuading coastal towns to try a simple fix: replace ordinary white streetlights with turtle-safe LED lights. These bulbs glow amber or red and shine only downward. A sea turtle's eyes are far less sensitive to long-wavelength light like this than to the blue-white glow of a normal bulb.
The change costs a town very little, but the results have been dramatic. On beaches that switched to turtle-safe lighting, far more hatchlings reach the water on their first night. Adult females return to nest too, because a dark beach still feels safe. Elena's project shows that protecting an endangered species does not always need dramatic action — sometimes it just needs the right colour of light bulb.
This B1 English reading tells a real conservation story: how a simple change in streetlight colour is helping baby sea turtles survive their first, most dangerous night. It explains the science in plain language — why hatchlings follow light, and why the wrong colour of light can be fatal.
Notice the cause-and-effect structure running through the passage: an instinct that once worked perfectly now clashes with modern lighting, and a small, cheap fix restores the balance. Spotting cause-and-effect language ('because', 'so', 'as a result') is a key B1 and IELTS reading skill.
Keep practising with related reading and grammar units at your level.
يروي هذا النص الإنجليزي للمستوى المتوسط القصة الحقيقية لكيفية مساعدة أضواء LED الكهرمانية والحمراء 'الصديقة للسلاحف' صغار سلاحف البحر على الوصول بأمان إلى المحيط. ستتعلم مفردات حماية البيئة، وتتدرب على مهارات المسح والاستنتاج، ويمكنك ترجمة أي كلمة داخل التطبيق.
جميع أسئلة القراءة لمستوى B1 لـ “كيف تنقذ أضواء LED سلاحف البحر – قراءة بالإنجليزي للمستوى المتوسط مع الأسئلة والإجابات”، كل سؤال مع الإجابة الصحيحة وشرح موجز. اقرأ النص أعلاه، وجرّب التمارين التفاعلية، ثم تحقق من إجاباتك هنا.
1. What instinct do baby sea turtles follow right after digging out of the sand?
الإجابة: They crawl toward the brightest light on the horizon
Correct. The text says hatchlings "follow a single instinct: crawl toward the brightest light on the horizon." Sound and parental guidance are never mentioned.
2. For millions of years, what natural light guided hatchlings safely to the sea?
الإجابة: Moonlight reflecting off the ocean
Correct. Paragraph 1 states this exactly: "that light was moonlight reflecting off the ocean." Hatchlings dig out at night, so sunlight is not the answer.
3. Why do artificial lights put hatchlings in danger, according to the text?
الإجابة: The lights outshine the sea, so hatchlings crawl inland by mistake
Correct. Paragraph 2 says "when artificial lights outshine the sea, hatchlings crawl the wrong way, inland." Heat and permanent eye damage are never mentioned.
4. What did Elena Rojas persuade coastal towns to do?
الإجابة: Replace ordinary white streetlights with turtle-safe LED lights
Correct. The text names her exact solution: replacing "ordinary white streetlights with turtle-safe LED lights." Moving nests or banning tourists is never mentioned.
5. Why are turtle-safe LED lights amber or red instead of white?
الإجابة: A sea turtle's eyes are far less sensitive to this long-wavelength light than to blue-white light
Correct. The text gives this exact reason. Cost, tourism, and bulb lifespan are plausible-sounding but never mentioned.
6. According to the text, what happens on beaches that switch to turtle-safe lighting?
الإجابة: More hatchlings reach the water and more adult females return to nest
Correct. Paragraph 3 states both results directly. Tourism and nesting season are never mentioned as effects of the lighting change.
7. What is the writer's main point about protecting endangered species, based on this example?
الإجابة: Sometimes a small, simple change — like the colour of a light bulb — can have a major conservation impact
Correct. The final sentence states this directly: protecting a species "does not always need dramatic action — sometimes it just needs the right colour of light bulb." This question tests the overall argument, not a single fact.
1. Which option does not belong?
الإجابة: green
The passage mentions amber and red (turtle-safe bulbs) and white (ordinary bulbs) — green is never mentioned as a streetlight colour in the text.
2. Which option does not belong?
الإجابة: old age
The text names dehydration, predators, and being killed crossing roads (traffic accidents) as the dangers confused hatchlings face. Old age is never mentioned.
3. Which option does not belong?
الإجابة: banning all beach lighting completely
Elena's solution replaces lights with turtle-safe, downward-shining, amber-or-red LEDs — the text never describes a total lighting ban.
4. Which option does not belong?
الإجابة: fly
The passage describes hatchlings digging out of the sand, crawling to the sea, and swimming once they reach the water. Sea turtles never fly.
5. Which option does not belong?
الإجابة: tourist numbers increase significantly
The text states more hatchlings survive and more adult females return to a beach that still feels dark and safe. Tourist numbers are never mentioned as a result.
6. Which option does not belong?
الإجابة: streetlight
Moonlight, starlight, and sunlight are all natural light from the sky; a streetlight is artificial — the exact contrast the passage draws between safe natural light and dangerous artificial light.