Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 445 · 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 60 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.True or false: adding steel to concrete makes a building safer in earthquakes. (a) False (b) True
3. 3.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) building tall and narrow (c) using flexible joints (d) having a wide base
4. 4.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
6. 6.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a fridge (c) a telescope (d) a shake table
7. 7.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) adding cross bracing (c) raising heavy tanks high (d) having a wide base
8. 8.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
9. 9.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) having a wide base (c) adding steel to concrete (d) fitting rubber base pads
10. 10.🔍 Which is the odd one out? (a) fitting rubber base pads (b) using a light roof (c) building tall and narrow (d) having a wide base
11. 11.🔍 Which is the odd one out? (a) fitting rubber base pads (b) using flexible joints (c) using a heavy roof (d) adding cross bracing
12. 12.Which of these makes a building less safe in earthquakes? (a) stacking loose bricks (b) using a light roof (c) keeping a simple shape (d) adding steel to concrete
13. 13.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
14. 14.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
15. 15.True or false: adding cross bracing makes a building less safe in earthquakes. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) adding cross bracing (b) making brittle joints (c) fitting rubber base pads (d) using a light roof
17. 17.Which of these makes a building safer in earthquakes? (a) having a wide base (b) using a heavy roof (c) stacking loose bricks (d) leaving out steel bars
18. 18.🏚️ 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 90 cm tall on a 30 cm base and tower C is 200 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
19. 19.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) adding steel to concrete (c) using a heavy roof (d) raising heavy tanks high
20. 20.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
21. 21.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) low down (c) on a thin pole (d) hanging outside
22. 22.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
23. 23.🏚️ 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
24. 24.🏚️ Why is a wide base safer? (a) it is colourful (b) it is taller (c) it is harder to tip over (d) it is lighter
25. 25.🔍 Which is the odd one out? (a) leaving out steel bars (b) using a heavy roof (c) raising heavy tanks high (d) adding cross bracing
26. 26.🏚️ 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 40 cm tall on a 40 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
27. 27.🏚️ Three solid model towers are made of the same material. Tower A is 240 cm tall on a 40 cm wide base, tower B is 120 cm tall on a 30 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 A (c) tower C
28. 28.🔍 Which is the odd one out? (a) leaving out steel bars (b) adding steel to concrete (c) having a wide base (d) using flexible joints
29. 29.🔍 Which is the odd one out? (a) stacking loose bricks (b) building tall and narrow (c) using flexible joints (d) raising heavy tanks high
30. 30.🏚️ 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 80 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
31. 31.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) using flexible joints (c) building tall and narrow (d) raising heavy tanks high
32. 32.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) building tall and narrow (b) leaving out steel bars (c) having a wide base (d) raising heavy tanks high
34. 34.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
35. 35.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) keeping a simple shape (c) using flexible joints (d) leaving out steel bars
36. 36.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) having a wide base (c) using a heavy roof (d) keeping a simple shape
37. 37.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
38. 38.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
39. 39.🏚️ 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 90 cm tall on a 30 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
40. 40.🏚️ 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 40 cm tall on a 20 cm base and tower C is 120 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B

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