Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 358 · 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 10 cm tall on a 10 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 60 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
2. 2.🔍 Which is the odd one out? (a) keeping a simple shape (b) using flexible joints (c) adding cross bracing (d) making brittle joints
3. 3.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
4. 4.Which of these makes a building less safe in earthquakes? (a) building tall and narrow (b) adding cross bracing (c) fitting rubber base pads (d) adding steel to concrete
5. 5.🔍 Which is the odd one out? (a) keeping a simple shape (b) making brittle joints (c) stacking loose bricks (d) building tall and narrow
6. 6.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they bend, not break (c) they stop shaking (d) they are cheap
7. 7.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
8. 8.True or false: adding steel to concrete makes a building safer in earthquakes. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) using flexible joints (b) using a light roof (c) keeping a simple shape (d) leaving out steel bars
10. 10.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) False (b) True
11. 11.🏚️ 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 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
12. 12.🏚️ Three solid model towers are made of the same material. Tower A is 90 cm tall on a 30 cm wide base, tower B is 20 cm tall on a 20 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
13. 13.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 10 cm wide base, tower B is 80 cm tall on a 40 cm base and tower C is 10 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
14. 14.🔍 Which is the odd one out? (a) having a wide base (b) making brittle joints (c) building tall and narrow (d) stacking loose bricks
15. 15.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 40 cm wide base, tower B is 10 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
16. 16.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) using a heavy roof (b) leaving out steel bars (c) using flexible joints (d) building tall and narrow
18. 18.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
19. 19.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using a light roof (c) fitting rubber base pads (d) making brittle joints
20. 20.Which of these makes a building less safe in earthquakes? (a) raising heavy tanks high (b) using flexible joints (c) adding cross bracing (d) adding steel to concrete
21. 21.🔍 Which is the odd one out? (a) fitting rubber base pads (b) having a wide base (c) adding cross bracing (d) building tall and narrow
22. 22.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 30 cm wide base, tower B is 80 cm tall on a 10 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
23. 23.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) leaving out steel bars (c) using a heavy roof (d) adding steel to concrete
24. 24.🏚️ 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
25. 25.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) having a wide base (c) using a heavy roof (d) raising heavy tanks high
26. 26.True or false: building tall and narrow makes a building less safe in earthquakes. (a) True (b) False
27. 27.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
28. 28.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 10 cm wide base, tower B is 200 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 A (b) tower C (c) tower B
29. 29.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
30. 30.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) on the very top (c) on a thin pole (d) hanging outside
31. 31.🏚️ 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 80 cm tall on a 40 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
32. 32.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) stacking loose bricks (c) keeping a simple shape (d) building tall and narrow
33. 33.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a heavy roof (c) using a light roof (d) stacking loose bricks
34. 34.True or false: keeping a simple shape makes a building safer in earthquakes. (a) False (b) True
35. 35.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 20 cm wide base, tower B is 50 cm tall on a 10 cm base and tower C is 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
36. 36.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 10 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
37. 37.True or false: leaving out steel bars makes a building safer in earthquakes. (a) False (b) True
38. 38.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a microscope (c) a fridge (d) a shake table
39. 39.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 60 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
40. 40.Which of these makes a building less safe in earthquakes? (a) stacking loose bricks (b) adding cross bracing (c) using flexible joints (d) having a wide base

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