Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 762 · 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 40 cm wide base, tower B is 150 cm tall on a 30 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
2. 2.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) adding steel to concrete (b) having a wide base (c) using flexible joints (d) building tall and narrow
4. 4.Which of these makes a building safer in earthquakes? (a) using flexible joints (b) leaving out steel bars (c) using a heavy roof (d) making brittle joints
5. 5.🏚️ 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 60 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the easiest 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 60 cm tall on a 10 cm wide base, tower B is 200 cm tall on a 40 cm base and tower C is 90 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
7. 7.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) keeping a simple shape (c) making brittle joints (d) building tall and narrow
8. 8.🏚️ 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 100 cm tall on a 20 cm base and tower C is 30 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
9. 9.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
10. 10.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they are cheap (d) they bend, not break
11. 11.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) hanging outside (c) on the very top (d) on a thin pole
12. 12.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) True (b) False
13. 13.True or false: using a light roof makes a building less safe in earthquakes. (a) False (b) True
14. 14.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) raising heavy tanks high (c) building tall and narrow (d) adding steel to concrete
15. 15.🔍 Which is the odd one out? (a) leaving out steel bars (b) fitting rubber base pads (c) using a heavy roof (d) building tall and narrow
16. 16.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
17. 17.🔍 Which is the odd one out? (a) using flexible joints (b) fitting rubber base pads (c) raising heavy tanks high (d) adding cross bracing
18. 18.🔍 Which is the odd one out? (a) stacking loose bricks (b) building tall and narrow (c) having a wide base (d) leaving out steel bars
19. 19.🔍 Which is the odd one out? (a) leaving out steel bars (b) having a wide base (c) using flexible joints (d) fitting rubber base pads
20. 20.🏚️ 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 160 cm tall on a 40 cm base and tower C is 100 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
21. 21.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
22. 22.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) adding steel to concrete (c) adding cross bracing (d) raising heavy tanks high
23. 23.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
24. 24.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) using flexible joints (c) making brittle joints (d) adding steel to concrete
25. 25.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
26. 26.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) building tall and narrow (c) fitting rubber base pads (d) using a heavy roof
27. 27.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
28. 28.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) fitting rubber base pads (c) having a wide base (d) stacking loose bricks
29. 29.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a telescope (c) a shake table (d) a fridge
30. 30.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) True (b) False
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.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using a light roof (c) raising heavy tanks high (d) using a heavy roof
33. 33.True or false: making brittle joints makes a building safer in earthquakes. (a) False (b) True
34. 34.True or false: using a heavy roof makes a building less safe in earthquakes. (a) True (b) False
35. 35.True or false: building tall and narrow makes a building safer in earthquakes. (a) True (b) False
36. 36.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 40 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
37. 37.🏚️ 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 80 cm tall on a 10 cm base and tower C is 240 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
38. 38.🔍 Which is the odd one out? (a) making brittle joints (b) using a heavy roof (c) using flexible joints (d) stacking loose bricks
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 80 cm tall on a 40 cm base and tower C is 60 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
40. 40.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) False (b) True

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