Science · Fifth Grade, Primary · Unit 6: Protecting Earth's Resources · First Semester
A 10-question quiz; after every question you'll see the right answer with an explanation.
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Air and water are resources living things cannot live without, but pollution threatens them. In this lesson you learn the components of air, the sources of air and water pollution such as acid rain and smog, and ways to protect them.
💡 Tip: A common mistake: thinking oxygen is the most common gas in air. Nitrogen is the most common at about 78%, and oxygen is only about 21%.
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Rain that carries acidic substances formed when gases from factories and car exhaust mix with water vapor in the air. It harms plants and aquatic life and damages buildings and statues.
A mixture of fog, smoke, and polluting gases that appears over crowded cities like a brown cloud. It causes breathing difficulty and eye irritation.
Start the lesson quiz on Study with Ghada: 10 questions from the Science Fifth Grade, Primary question bank. After each answer you'll see the right answer with an explanation, and any questions you miss move to “Review my mistakes” until you master them.
Yes, completely free. They're built on the Science - Grade 5 - Semester 1 lessons in the same order as the book, and every question is reviewed and approved by a teacher before students see it.
