Class 5 Science Chapter 8 Test 1 Welcome to your Class 5 Science Chapter 8 Test 1 1. The volume of internal core of the Earth is ________ of the total volume of the Earth. 16% 33% 50% 97% 2. The central part of the Earth is called the ________. Crust Mantle Core None of these 3. It takes about 1000 years to make only a ________cm thick layer of soil. 5 50 500 5000 4. The average thickness of the crust of the Earth is ________. 1 to 70 km 5 to 70 km 10 to 70 km 10 to 700 km 5. The hot fluid in ________ of the Earth comes out of the Earth surface in form of lava during volcano eruption Crust Mantle Core None of these 6. The biggest part of the Earth by volume is ________. Crust Mantle Core None of these 7. ________ is extremely hot and highly thick fluid like honey. Crust Mantle Core None of these 8. Internal core is ________. Solid Complete liquid Molten fluid None of these 9. The thickness of the mental is about ________. 2900 km 3900 km 3000 km 13800 km 10. The hottest part of the Earth is its ________. Crust Mantle Core None of these 11. ________ contains lofty mountains, deep oceans, rivers, green fields, rural and urban dwellings. Crust Mantle Core All of these 12. ________ consists of solid matter. Crust Mantle Core All of these 13. The diameter of the Earth is ________km. 11800 km 12800 km 12000 km 13800 km 14. External core is in the form of a thick black ________ which contains elements like iron and nickel. Solid Complete liquid Molten fluid None of these 15. The temperature of the core is about ________0C. 4000 5000 6000 7000 16. The outer shell of the Earth is called ________. Crust Mantle Core All of these 17. The Earth’s core consists of ________ parts. Two Three Four Five 18. The only planet of the solar system where conditions are suitable for the existence of life is ________. Mars Jupiter Venus Earth 19. There are ________ layers of the Earth. Two Three Four five 20. The layer of the Earth under the crust is called ________. Crust Mantle Core None of these 21. We live on the ________ of the Earth. Crust Mantle Core All of these 22. Internal core contains elements like iron and nickel. Internal External Mantle Crust 23. Beneath the oceans, the thickness of crust is about ________ km. 5 10 15 20 24. The distance of the Earth from the sun is ________million km. 130 140 150 170 25. The weight of internal core of the Earth is ________ of the total of the Earth. 16% 33% 50% 97% Time is Up! Time's up
