Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 52 · 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 40 cm tall on a 10 cm wide base, tower B is 120 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 B (b) tower A (c) tower C
2. 2.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) raising heavy tanks high (c) keeping a simple shape (d) adding cross bracing
3. 3.🔍 Which is the odd one out? (a) stacking loose bricks (b) using flexible joints (c) building tall and narrow (d) using a heavy roof
4. 4.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
5. 5.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
6. 6.True or false: making brittle joints makes a building safer in earthquakes. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) adding cross bracing (b) using a light roof (c) fitting rubber base pads (d) making brittle joints
8. 8.🏚️ 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 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
9. 9.🏚️ 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 160 cm tall on a 40 cm base and tower C is 80 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
10. 10.🏚️ 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 10 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 C (b) tower A (c) tower B
11. 11.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) having a wide base (c) using a light roof (d) stacking loose bricks
12. 12.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) adding cross bracing (c) stacking loose bricks (d) using a heavy roof
13. 13.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
14. 14.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they look nice (c) they bend, not break (d) they are cheap
15. 15.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is lighter (c) it is taller (d) it is colourful
16. 16.🔍 Which is the odd one out? (a) adding cross bracing (b) raising heavy tanks high (c) building tall and narrow (d) using a heavy roof
17. 17.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 30 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 90 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
18. 18.🔍 Which is the odd one out? (a) building tall and narrow (b) making brittle joints (c) using a heavy roof (d) keeping a simple shape
19. 19.Which of these makes a building less safe in earthquakes? (a) building tall and narrow (b) fitting rubber base pads (c) keeping a simple shape (d) adding steel to concrete
20. 20.🔍 Which is the odd one out? (a) making brittle joints (b) leaving out steel bars (c) raising heavy tanks high (d) fitting rubber base pads
21. 21.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
22. 22.Which of these makes a building safer in earthquakes? (a) using flexible joints (b) making brittle joints (c) leaving out steel bars (d) raising heavy tanks high
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 safer in earthquakes? (a) using a heavy roof (b) using a light roof (c) leaving out steel bars (d) stacking loose bricks
25. 25.🏚️ 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 180 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
26. 26.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a telescope (c) a fridge (d) a shake table
27. 27.Which of these makes a building less safe in earthquakes? (a) leaving out steel bars (b) using flexible joints (c) fitting rubber base pads (d) adding steel to concrete
28. 28.🔍 Which is the odd one out? (a) adding steel to concrete (b) keeping a simple shape (c) adding cross bracing (d) building tall and narrow
29. 29.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
30. 30.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
31. 31.True or false: using a light roof makes a building less safe in earthquakes. (a) True (b) False
32. 32.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) making brittle joints (c) using a heavy roof (d) keeping a simple shape
33. 33.🏚️ 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 60 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
34. 34.🏚️ 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 120 cm tall on a 20 cm base and tower C is 40 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
35. 35.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) adding steel to concrete (c) leaving out steel bars (d) making brittle joints
36. 36.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 20 cm wide base, tower B is 10 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 B (b) tower A (c) tower C
37. 37.🔍 Which is the odd one out? (a) adding steel to concrete (b) raising heavy tanks high (c) using a heavy roof (d) leaving out steel bars
38. 38.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
39. 39.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a light roof (c) building tall and narrow (d) stacking loose bricks
40. 40.🔍 Which is the odd one out? (a) having a wide base (b) adding steel to concrete (c) using a heavy roof (d) using a light roof

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