Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 908 · 40 questions

Engineer's tip (Low, wide, flexible): Safer: wide base, flexible joints, bracing, steel in concrete, light roof, rubber pads, simple shape. Less safe: heavy tops, narrow bases, loose bricks, no steel, brittle joints. Tipping: compare height ÷ base width — the smaller it is, the steadier the block.

1. 1.🏚️ Three solid model towers are made of the same material. Tower A is 240 cm tall on a 40 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 100 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
2. 2.🔍 Which is the odd one out? (a) leaving out steel bars (b) stacking loose bricks (c) using a heavy roof (d) keeping a simple shape
3. 3.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) making brittle joints (c) fitting rubber base pads (d) using a heavy roof
4. 4.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) building tall and narrow (b) adding cross bracing (c) using a heavy roof (d) leaving out steel bars
7. 7.🔍 Which is the odd one out? (a) raising heavy tanks high (b) fitting rubber base pads (c) using flexible joints (d) adding steel to concrete
8. 8.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) adding steel to concrete (c) adding cross bracing (d) stacking loose bricks
9. 9.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False
10. 10.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
11. 11.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) building tall and narrow (c) using a heavy roof (d) adding cross bracing
12. 12.True or false: keeping a simple shape makes a building safer in earthquakes. (a) False (b) True
13. 13.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they stop shaking (c) they are cheap (d) they look nice
14. 14.🔍 Which is the odd one out? (a) having a wide base (b) raising heavy tanks high (c) making brittle joints (d) leaving out steel bars
15. 15.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) leaving out steel bars (c) using a heavy roof (d) using flexible joints
16. 16.🏚️ Three solid model towers are made of the same material. Tower A is 200 cm tall on a 40 cm wide base, tower B is 20 cm tall on a 20 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
17. 17.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
18. 18.True or false: using flexible joints makes a building less safe in earthquakes. (a) False (b) True
19. 19.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) hanging outside (c) on the very top (d) low down
20. 20.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) adding steel to concrete (c) leaving out steel bars (d) using flexible joints
22. 22.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
23. 23.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a fridge (c) a microscope (d) a telescope
24. 24.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) building tall and narrow (c) fitting rubber base pads (d) having a wide base
25. 25.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 40 cm wide base, tower B is 50 cm tall on a 10 cm base and tower C is 60 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
26. 26.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
27. 27.🔍 Which is the odd one out? (a) adding cross bracing (b) keeping a simple shape (c) stacking loose bricks (d) using flexible joints
28. 28.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
29. 29.True or false: using a heavy roof makes a building less safe in earthquakes. (a) False (b) True
30. 30.Which of these makes a building safer in earthquakes? (a) adding steel to concrete (b) raising heavy tanks high (c) leaving out steel bars (d) building tall and narrow
31. 31.🏚️ Why is a wide base safer? (a) it is taller (b) it is lighter (c) it is colourful (d) it is harder to tip over
32. 32.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 40 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 40 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
33. 33.🏚️ Three solid model towers are made of the same material. Tower A is 160 cm tall on a 40 cm wide base, tower B is 60 cm tall on a 30 cm base and tower C is 150 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
34. 34.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) False (b) True
35. 35.🏚️ Three solid model towers are made of the same material. Tower A is 150 cm tall on a 30 cm wide base, tower B is 160 cm tall on a 40 cm base and tower C is 120 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
36. 36.Which of these makes a building safer in earthquakes? (a) having a wide base (b) raising heavy tanks high (c) making brittle joints (d) building tall and narrow
37. 37.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 20 cm wide base, tower B is 60 cm tall on a 20 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
38. 38.🔍 Which is the odd one out? (a) making brittle joints (b) building tall and narrow (c) using flexible joints (d) leaving out steel bars
39. 39.🔍 Which is the odd one out? (a) raising heavy tanks high (b) fitting rubber base pads (c) building tall and narrow (d) making brittle joints
40. 40.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a light roof (c) using a heavy roof (d) building tall and narrow

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