Grade 5 Science All Assessments & Revision of examination 1. Landforms are measured by a -------- surveyor -----. 2. A scientist who studies Earth's structure and history is called a (n)----- geologist -------. 3. The scientific theory that states Earth's crust is made of moving plates is called –-- plate tectonics ------. 4. –--- island chain ------- a line of islands. 5. –(e)----- lava ------ magma that reaches Earth's surface. 6. A species that is in danger of becoming extinct is a(n)---------endangered species---------. 7. Establishment of the first living community to develop in an area that used to be lifeless is called----pioneer community-------. 8. When a species dies out completely, the species is---------extinct-------. 9. The establishment of a new community where a community had already existed is called-------secondary succession-----------. 10. The process of one ecosystem gradually changing
Grade 7 Chemistry All Class Assessment and Revision of Examination 1. ---------------------- is a natural rock a) Element b) Ore c) Atom 2. The metal in ores are chemically bonded to other ------------------ d) Element e) Ore f) Atom 3. The least reactive ones are at the ----------------- g) tope h) middle i) bottom 4. Ores are rocks from which it is economical to extract metals that they contain. A) True B) False 5. The least reactive ones are at the top A) True B) False j) Most metal are found naturally in --------------------------- called ores. A. Element B. rocks C. Atom k) Gold is very expensive because it is ----------------------to find. A. difficult B. easy C. both A & B l) ---------------- is a process of heating an ore to a high temperature in the presence of air. A. Blasting B. Roasting C. Mel
Grade 8 Chemistry All Class Assessment and Revision of Examination 1. ----------------- on Earth Without depends on water. A. Car B. Life C. Mobile 2. The formula of ------------------- is H 2 O. A. carbon monoxide B. methane C. water 3. The hydrogen and -------------- atoms are joined by covalent bonds in water molecule. A. oxygen B. carbon C. nitrogen 4. ------------------------ is the changing of a liquid into a gas. A. Evaporation B. Condensation C. Precipitation 5. ------------------------ is the changing of a gas into a liquid. A. Evaporation B. Condensation C. Precipitation 6. A --------------------------- is an area from which water is drained. A. Evaporation B. watershed C. Precipitation 7. Water freezes at 0 °C and boils at 100°C. A. True B. False 8. Water is a gas at most temperatures on Earth. A. True B. False 9. Precipitation is any form of water that falls from the atmosphere
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