Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 437 · 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 20 cm tall on a 10 cm wide base, tower B is 40 cm tall on a 10 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
2. 2.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.🏚️ 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 20 cm base and tower C is 80 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
4. 4.🔍 Which is the odd one out? (a) adding steel to concrete (b) having a wide base (c) leaving out steel bars (d) fitting rubber base pads
5. 5.🔍 Which is the odd one out? (a) raising heavy tanks high (b) having a wide base (c) adding steel to concrete (d) adding cross bracing
6. 6.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) making brittle joints (c) adding cross bracing (d) having a wide base
7. 7.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a shake table (c) a microscope (d) a telescope
8. 8.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
9. 9.True or false: building tall and narrow makes a building safer in earthquakes. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) making brittle joints (b) having a wide base (c) adding steel to concrete (d) using flexible joints
11. 11.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
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 60 cm tall on a 10 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
13. 13.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 20 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 280 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
14. 14.Which of these makes a building safer in earthquakes? (a) keeping a simple shape (b) using a heavy roof (c) making brittle joints (d) stacking loose bricks
15. 15.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
16. 16.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) having a wide base (c) leaving out steel bars (d) making brittle joints
17. 17.True or false: making brittle joints makes a building safer in earthquakes. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) using flexible joints (b) keeping a simple shape (c) fitting rubber base pads (d) building tall and narrow
19. 19.🔍 Which is the odd one out? (a) leaving out steel bars (b) raising heavy tanks high (c) making brittle joints (d) adding cross bracing
20. 20.🏚️ 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 40 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 B (b) tower C (c) tower A
21. 21.🔍 Which is the odd one out? (a) raising heavy tanks high (b) stacking loose bricks (c) using a heavy roof (d) adding steel to concrete
22. 22.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
23. 23.🏚️ 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
24. 24.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
25. 25.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
26. 26.True or false: building tall and narrow makes a building less safe in earthquakes. (a) True (b) False
27. 27.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they stop shaking (d) they bend, not break
28. 28.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is lighter (c) it is colourful (d) it is taller
29. 29.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) leaving out steel bars (c) fitting rubber base pads (d) using flexible joints
30. 30.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) using a heavy roof (b) raising heavy tanks high (c) having a wide base (d) making brittle joints
32. 32.True or false: using a light roof makes a building less safe in earthquakes. (a) True (b) False
33. 33.🏚️ 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 50 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 B (b) tower A (c) tower C
34. 34.🏚️ Three solid model towers are made of the same material. Tower A is 210 cm tall on a 30 cm wide base, tower B is 240 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 A (b) tower C (c) tower B
35. 35.🏚️ 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 60 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 A (b) tower C (c) tower B
36. 36.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
37. 37.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) True (b) False
38. 38.🏚️ 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 40 cm tall on a 20 cm base and tower C is 20 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
39. 39.🏚️ 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 120 cm tall on a 40 cm base and tower C is 200 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
40. 40.🔍 Which is the odd one out? (a) having a wide base (b) adding cross bracing (c) adding steel to concrete (d) stacking loose bricks

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