Task reminder: Listen to each question and give a short spoken answer (1–2 words is enough). You have 10 seconds. Reveal the answer to self-check.

1. What is the name of the force that keeps planets in orbit around the Sun?

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2. What do astronomers call a massive explosion that marks the end of a large star’s life?

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3. What is the term for the layer of gases surrounding Earth?

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4. What type of rock is formed from cooled volcanic lava?

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5. What is the smallest unit of a chemical element that retains its properties?

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6. What process do plants use to convert sunlight into food?

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7. What is the name of the deepest ocean trench on Earth?

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8. What gas makes up approximately 78 percent of Earth’s atmosphere?

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9. What is the scientific study of earthquakes called?

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10. What type of animal breathes through gills as a larva and through lungs as an adult?

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