Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 343 · 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 60 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 40 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 B (c) tower C
2. 2.🔍 Which is the odd one out? (a) adding cross bracing (b) having a wide base (c) using flexible joints (d) leaving out steel bars
3. 3.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) on a thin pole (c) low down (d) hanging outside
4. 4.🏚️ 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 90 cm tall on a 30 cm base and tower C is 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
5. 5.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
6. 6.🏚️ 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 20 cm tall on a 20 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 C (c) tower B
7. 7.🔍 Which is the odd one out? (a) stacking loose bricks (b) fitting rubber base pads (c) building tall and narrow (d) making brittle joints
8. 8.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they bend, not break (d) they stop shaking
9. 9.🏚️ Why is a wide base safer? (a) it is taller (b) it is harder to tip over (c) it is lighter (d) it is colourful
10. 10.🏚️ 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 80 cm tall on a 20 cm base and tower C is 180 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
11. 11.🏚️ 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 40 cm base and tower C is 120 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
12. 12.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
13. 13.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
14. 14.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a shake table (c) a telescope (d) a microscope
15. 15.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) building tall and narrow (c) fitting rubber base pads (d) keeping a simple shape
16. 16.🔍 Which is the odd one out? (a) having a wide base (b) stacking loose bricks (c) using a heavy roof (d) making brittle joints
17. 17.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) keeping a simple shape (c) adding steel to concrete (d) stacking loose bricks
18. 18.True or false: using a light roof makes a building less safe in earthquakes. (a) False (b) True
19. 19.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) leaving out steel bars (c) building tall and narrow (d) fitting rubber base pads
20. 20.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
22. 22.🏚️ 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 60 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
23. 23.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
24. 24.🏚️ 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 80 cm tall on a 40 cm base and tower C is 20 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
25. 25.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) having a wide base (c) raising heavy tanks high (d) using a heavy roof
26. 26.🔍 Which is the odd one out? (a) fitting rubber base pads (b) using flexible joints (c) having a wide base (d) raising heavy tanks high
27. 27.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 40 cm wide base, tower B is 30 cm tall on a 10 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
28. 28.🏚️ 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 30 cm tall on a 30 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
29. 29.🔍 Which is the odd one out? (a) adding cross bracing (b) building tall and narrow (c) using a light roof (d) keeping a simple shape
30. 30.🔍 Which is the odd one out? (a) having a wide base (b) stacking loose bricks (c) using flexible joints (d) using a light roof
31. 31.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
32. 32.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
33. 33.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) adding cross bracing
34. 34.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False
35. 35.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) adding steel to concrete (c) using a heavy roof (d) using a light roof
36. 36.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) adding cross bracing (c) leaving out steel bars (d) raising heavy tanks high
37. 37.🏚️ Three solid model towers are made of the same material. Tower A is 50 cm tall on a 10 cm wide base, tower B is 180 cm tall on a 30 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
38. 38.🏚️ 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 80 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
39. 39.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
40. 40.🔍 Which is the odd one out? (a) fitting rubber base pads (b) keeping a simple shape (c) having a wide base (d) using a heavy roof

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