Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 823 · 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 80 cm tall on a 20 cm wide base, tower B is 120 cm tall on a 20 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
2. 2.True or false: having a wide base makes a building less safe in earthquakes. (a) True (b) False
3. 3.🏚️ 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 150 cm tall on a 30 cm base and tower C is 280 cm tall on a 40 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) raising heavy tanks high (b) using flexible joints (c) leaving out steel bars (d) using a heavy roof
5. 5.🏚️ 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 120 cm tall on a 30 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
6. 6.🏚️ 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 160 cm tall on a 40 cm base and tower C is 40 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
7. 7.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
8. 8.🔍 Which is the odd one out? (a) using flexible joints (b) keeping a simple shape (c) adding cross bracing (d) using a heavy roof
9. 9.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) raising heavy tanks high (c) adding steel to concrete (d) keeping a simple shape
10. 10.🏚️ 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 20 cm tall on a 20 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
11. 11.🏚️ Why is a wide base safer? (a) it is taller (b) it is harder to tip over (c) it is colourful (d) it is lighter
12. 12.🏚️ 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 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
13. 13.True or false: keeping a simple shape makes a building safer in earthquakes. (a) False (b) True
14. 14.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they are cheap (c) they look nice (d) they bend, not break
15. 15.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) raising heavy tanks high (c) building tall and narrow (d) having a wide base
16. 16.🔍 Which is the odd one out? (a) using a light roof (b) building tall and narrow (c) adding steel to concrete (d) having a wide base
17. 17.🔍 Which is the odd one out? (a) leaving out steel bars (b) making brittle joints (c) having a wide base (d) building tall and narrow
18. 18.Which of these makes a building less safe in earthquakes? (a) using a heavy roof (b) adding cross bracing (c) using flexible joints (d) adding steel to concrete
19. 19.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
20. 20.🔍 Which is the odd one out? (a) adding cross bracing (b) leaving out steel bars (c) keeping a simple shape (d) using a light roof
21. 21.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) having a wide base (c) building tall and narrow (d) fitting rubber base pads
22. 22.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
23. 23.Which of these makes a building safer in earthquakes? (a) using a light roof (b) raising heavy tanks high (c) leaving out steel bars (d) stacking loose bricks
24. 24.🏚️ Three solid model towers are made of the same material. Tower A is 10 cm tall on a 10 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 40 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.🏚️ 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 60 cm tall on a 20 cm base and tower C is 120 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
26. 26.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) stacking loose bricks (c) using flexible joints (d) adding cross bracing
27. 27.🔍 Which is the odd one out? (a) using a light roof (b) fitting rubber base pads (c) having a wide base (d) stacking loose bricks
28. 28.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) low down (c) on the very top (d) hanging outside
29. 29.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a shake table (c) a microscope (d) a fridge
30. 30.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) False (b) True
31. 31.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
32. 32.True or false: keeping a simple shape 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 50 cm tall on a 10 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
34. 34.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
35. 35.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a heavy roof (c) adding cross bracing (d) making brittle joints
36. 36.🔍 Which is the odd one out? (a) using a heavy roof (b) stacking loose bricks (c) raising heavy tanks high (d) fitting rubber base pads
37. 37.True or false: using a light roof makes a building safer in earthquakes. (a) True (b) False
38. 38.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
39. 39.🏚️ Does raising heavy tanks high 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 120 cm tall on a 40 cm wide base, tower B is 120 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 A (c) tower B

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