[{"id": 1, "type": "true_false", "question": "The Earth rotates on its axis once every 24 hours, causing day and night.", "correct_answer": "True"}, {"id": 2, "type": "multiple_choice", "options": ["Light, dark, gray", "Solid, liquid, gas", "Big, medium, small", "Hot, cold, warm"], "question": "What are the three states of matter?", "correct_answer": "Solid, liquid, gas"}, {"id": 3, "type": "multiple_choice", "options": ["Big, medium, small", "Solid, liquid, gas", "Light, dark, gray", "Hot, cold, warm"], "question": "What are the three states of matter?", "correct_answer": "Solid, liquid, gas"}, {"id": 4, "type": "multiple_choice", "options": ["Light, dark, gray", "Solid, liquid, gas", "Big, medium, small", "Hot, cold, warm"], "question": "What are the three states of matter?", "correct_answer": "Solid, liquid, gas"}, {"id": 5, "type": "multiple_choice", "options": ["Thermometer", "Anemometer", "Rain gauge", "Barometer"], "question": "What instrument measures temperature?", "correct_answer": "Thermometer"}, {"id": 6, "type": "multiple_choice", "options": ["Hot, cold, warm", "Solid, liquid, gas", "Big, medium, small", "Light, dark, gray"], "question": "What are the three states of matter?", "correct_answer": "Solid, liquid, gas"}, {"id": 7, "type": "multiple_choice", "options": ["Wind, rocks, and heat", "Sand, ice, and nitrogen", "Soil, darkness, and oxygen", "Sunlight, water, and carbon dioxide"], "question": "What do plants need to make their own food through photosynthesis?", "correct_answer": "Sunlight, water, and carbon dioxide"}, {"id": 8, "type": "short_answer", "question": "Describe one key concept you learned about \"Magnets Quiz\" in your own words.", "correct_answer": null}]