Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 231 · 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.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they look nice (c) they are cheap (d) they bend, not break
2. 2.True or false: building tall and narrow makes a building safer in earthquakes. (a) True (b) False
3. 3.🏚️ Why is a wide base safer? (a) it is colourful (b) it is lighter (c) it is taller (d) it is harder to tip over
4. 4.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using a heavy roof (c) using a light roof (d) raising heavy tanks high
5. 5.🏚️ 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 160 cm tall on a 40 cm base and tower C is 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
6. 6.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) fitting rubber base pads (c) having a wide base (d) leaving out steel bars
7. 7.🔍 Which is the odd one out? (a) making brittle joints (b) adding steel to concrete (c) using flexible joints (d) adding cross bracing
8. 8.🏚️ 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 150 cm tall on a 30 cm base and tower C is 40 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
9. 9.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a telescope (c) a fridge (d) a microscope
10. 10.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a heavy roof (c) building tall and narrow (d) adding cross bracing
11. 11.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) adding steel to concrete (c) using a heavy roof (d) fitting rubber base pads
12. 12.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) using a light roof (c) fitting rubber base pads (d) making brittle joints
13. 13.🏚️ 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 30 cm tall on a 10 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 C (c) tower A
14. 14.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
15. 15.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) having a wide base (c) using a heavy roof (d) leaving out steel bars
16. 16.🔍 Which is the odd one out? (a) keeping a simple shape (b) adding steel to concrete (c) leaving out steel bars (d) adding cross bracing
17. 17.True or false: adding cross bracing makes a building less safe in earthquakes. (a) False (b) True
18. 18.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) low down (c) hanging outside (d) on the very top
19. 19.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
20. 20.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
21. 21.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) raising heavy tanks high (c) having a wide base (d) keeping a simple shape
22. 22.🏚️ 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 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
23. 23.🏚️ 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 90 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 B (c) tower A
24. 24.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
25. 25.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True
26. 26.True or false: having a wide base makes a building less safe in earthquakes. (a) False (b) True
27. 27.Which of these makes a building safer in earthquakes? (a) keeping a simple shape (b) building tall and narrow (c) leaving out steel bars (d) stacking loose bricks
28. 28.🔍 Which is the odd one out? (a) building tall and narrow (b) having a wide base (c) adding steel to concrete (d) using a light roof
29. 29.🏚️ 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 50 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 B (c) tower A
30. 30.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
31. 31.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) using a light roof (b) having a wide base (c) using a heavy roof (d) keeping a simple shape
33. 33.True or false: using flexible joints makes a building less safe in earthquakes. (a) False (b) True
34. 34.🏚️ 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 60 cm tall on a 10 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
35. 35.🏚️ 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 10 cm tall on a 10 cm base and tower C is 90 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
36. 36.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
37. 37.🏚️ 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 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
38. 38.🔍 Which is the odd one out? (a) raising heavy tanks high (b) making brittle joints (c) using a heavy roof (d) using flexible joints
39. 39.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) leaving out steel bars (c) adding steel to concrete (d) stacking loose bricks
40. 40.🏚️ 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 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B

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