Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 169 · 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 160 cm tall on a 40 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 10 cm tall on a 10 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) using flexible joints (c) raising heavy tanks high (d) making brittle joints
3. 3.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) adding cross bracing (c) leaving out steel bars (d) fitting rubber base pads
4. 4.True or false: having a wide base makes a building less safe in earthquakes. (a) False (b) True
5. 5.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
6. 6.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) using a heavy roof (c) using flexible joints (d) adding cross bracing
7. 7.🔍 Which is the odd one out? (a) fitting rubber base pads (b) having a wide base (c) adding steel to concrete (d) stacking loose bricks
8. 8.🏚️ 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 180 cm tall on a 30 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
9. 9.🔍 Which is the odd one out? (a) having a wide base (b) making brittle joints (c) stacking loose bricks (d) raising heavy tanks high
10. 10.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a light roof (c) building tall and narrow (d) raising heavy tanks high
11. 11.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) raising heavy tanks high (c) adding steel to concrete (d) using a heavy roof
12. 12.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
13. 13.Which of these makes a building safer in earthquakes? (a) adding cross bracing (b) building tall and narrow (c) using a heavy roof (d) leaving out steel bars
14. 14.🏚️ 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 140 cm tall on a 20 cm base and tower C is 150 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
15. 15.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) making brittle joints (c) using a heavy roof (d) fitting rubber base pads
16. 16.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a heavy roof (c) raising heavy tanks high (d) fitting rubber base pads
17. 17.True or false: using a light roof makes a building safer in earthquakes. (a) True (b) False
18. 18.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a telescope (c) a shake table (d) a microscope
19. 19.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
20. 20.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) making brittle joints (c) having a wide base (d) using a heavy roof
21. 21.True or false: using flexible joints makes a building less safe in earthquakes. (a) False (b) True
22. 22.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
23. 23.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
24. 24.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) using a light roof (c) making brittle joints (d) using flexible joints
25. 25.🏚️ 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 150 cm tall on a 30 cm base and tower C is 180 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
26. 26.🏚️ 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 50 cm tall on a 10 cm base and tower C is 30 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
27. 27.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
28. 28.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) False (b) True
29. 29.🏚️ Why is a wide base safer? (a) it is taller (b) it is lighter (c) it is harder to tip over (d) it is colourful
30. 30.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) keeping a simple shape (c) fitting rubber base pads (d) building tall and narrow
31. 31.🔍 Which is the odd one out? (a) using a heavy roof (b) leaving out steel bars (c) stacking loose bricks (d) keeping a simple shape
32. 32.🏚️ 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 30 cm tall on a 10 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
33. 33.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
34. 34.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they bend, not break (d) they are cheap
35. 35.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
36. 36.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) making brittle joints (b) fitting rubber base pads (c) adding cross bracing (d) adding steel to concrete
38. 38.True or false: adding cross bracing makes a building less safe in earthquakes. (a) False (b) True
39. 39.🏚️ 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 80 cm tall on a 20 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
40. 40.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 20 cm tall on a 20 cm base and tower C is 90 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B

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