Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 853 · 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.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they look nice (c) they stop shaking (d) they bend, not break
2. 2.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 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 C (b) tower B (c) tower A
3. 3.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
4. 4.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) leaving out steel bars (c) raising heavy tanks high (d) adding cross bracing
5. 5.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) raising heavy tanks high (c) using a light roof (d) adding steel to concrete
6. 6.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) making brittle joints (c) fitting rubber base pads (d) using a light roof
7. 7.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using a heavy roof (c) stacking loose bricks (d) adding steel to concrete
8. 8.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a shake table (c) a fridge (d) a telescope
10. 10.🔍 Which is the odd one out? (a) using a heavy roof (b) using a light roof (c) adding cross bracing (d) using flexible joints
11. 11.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
12. 12.Which of these makes a building safer in earthquakes? (a) using a light roof (b) building tall and narrow (c) leaving out steel bars (d) raising heavy tanks high
13. 13.🏚️ Three solid model towers are made of the same material. Tower A is 100 cm tall on a 20 cm wide base, tower B is 40 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 C (b) tower B (c) tower A
14. 14.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 180 cm tall on a 30 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 A (c) tower C
15. 15.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
16. 16.🏚️ Why is a wide base safer? (a) it is lighter (b) it is colourful (c) it is taller (d) it is harder to tip over
17. 17.Which of these makes a building safer in earthquakes? (a) having a wide base (b) leaving out steel bars (c) raising heavy tanks high (d) making brittle joints
18. 18.🏚️ 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 100 cm tall on a 20 cm base and tower C is 60 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
19. 19.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) making brittle joints (c) leaving out steel bars (d) fitting rubber base pads
20. 20.🏚️ 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 20 cm tall on a 20 cm base and tower C is 20 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
21. 21.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) True (b) False
22. 22.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
23. 23.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using a light roof (c) leaving out steel bars (d) using flexible joints
24. 24.🏚️ 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 100 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
25. 25.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
26. 26.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 80 cm tall on a 10 cm base and tower C is 60 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
27. 27.🏚️ 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 60 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
28. 28.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 20 cm wide base, tower B is 60 cm tall on a 20 cm base and tower C is 60 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
29. 29.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 20 cm tall on a 10 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 B (c) tower A
30. 30.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 80 cm tall on a 40 cm base and tower C is 90 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
31. 31.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) True (b) False
32. 32.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 40 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
33. 33.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using a heavy roof (c) using flexible joints (d) having a wide base
34. 34.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
35. 35.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
36. 36.🏚️ 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 70 cm tall on a 10 cm base and tower C is 240 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
37. 37.True or false: making brittle joints makes a building safer in earthquakes. (a) True (b) False
38. 38.🏚️ 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 20 cm tall on a 10 cm base and tower C is 160 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
39. 39.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
40. 40.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 50 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A

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