Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 286 · 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.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
2. 2.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
4. 4.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 20 cm wide base, tower B is 140 cm tall on a 20 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
5. 5.Which of these makes a building safer in earthquakes? (a) using a light roof (b) raising heavy tanks high (c) making brittle joints (d) leaving out steel bars
6. 6.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
7. 7.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) using flexible joints (c) adding cross bracing (d) stacking loose bricks
8. 8.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) True (b) False
10. 10.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
11. 11.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
12. 12.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they stop shaking (c) they bend, not break (d) they look nice
13. 13.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) raising heavy tanks high (c) adding steel to concrete (d) adding cross bracing
14. 14.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a fridge (c) a shake table (d) a microscope
15. 15.🏚️ 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 10 cm base and tower C is 40 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
16. 16.🏚️ 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 210 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 C (c) tower A
17. 17.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
18. 18.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
19. 19.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
20. 20.🔍 Which is the odd one out? (a) having a wide base (b) adding steel to concrete (c) stacking loose bricks (d) using a light roof
21. 21.🔍 Which is the odd one out? (a) using a heavy roof (b) adding cross bracing (c) using a light roof (d) having a wide base
22. 22.🏚️ 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 180 cm tall on a 30 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 B (c) tower A
23. 23.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) using a heavy roof (c) making brittle joints (d) adding cross bracing
24. 24.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
25. 25.🔍 Which is the odd one out? (a) using flexible joints (b) fitting rubber base pads (c) building tall and narrow (d) using a light roof
26. 26.🔍 Which is the odd one out? (a) stacking loose bricks (b) making brittle joints (c) adding cross bracing (d) raising heavy tanks high
27. 27.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
28. 28.True or false: stacking loose bricks makes a building safer in earthquakes. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) stacking loose bricks (b) raising heavy tanks high (c) building tall and narrow (d) keeping a simple shape
30. 30.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) using a light roof (c) making brittle joints (d) keeping a simple shape
31. 31.Which of these makes a building safer in earthquakes? (a) adding steel to concrete (b) stacking loose bricks (c) building tall and narrow (d) making brittle joints
32. 32.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
33. 33.🏚️ 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 100 cm tall on a 20 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 B (c) tower A
34. 34.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a heavy roof (c) building tall and narrow (d) fitting rubber base pads
35. 35.🏚️ 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 20 cm tall on a 20 cm base and tower C is 120 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
36. 36.🔍 Which is the odd one out? (a) leaving out steel bars (b) building tall and narrow (c) raising heavy tanks high (d) adding steel to concrete
37. 37.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) building tall and narrow (c) adding cross bracing (d) fitting rubber base pads
38. 38.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) False (b) True
39. 39.🏚️ 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 200 cm tall on a 40 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
40. 40.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) adding cross bracing (c) leaving out steel bars (d) using flexible joints

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