Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 76 · 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 10 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 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
2. 2.🔍 Which is the odd one out? (a) using a heavy roof (b) building tall and narrow (c) stacking loose bricks (d) using a light roof
3. 3.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
4. 4.🔍 Which is the odd one out? (a) stacking loose bricks (b) having a wide base (c) adding steel to concrete (d) keeping a simple shape
5. 5.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
6. 6.🔍 Which is the odd one out? (a) using flexible joints (b) fitting rubber base pads (c) making brittle joints (d) keeping a simple shape
7. 7.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
8. 8.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) using a light roof (c) building tall and narrow (d) adding steel to concrete
9. 9.🔍 Which is the odd one out? (a) adding cross bracing (b) using a heavy roof (c) fitting rubber base pads (d) using flexible joints
10. 10.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) using a heavy roof (c) building tall and narrow (d) keeping a simple shape
11. 11.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
12. 12.🏚️ Three solid model towers are made of the same material. Tower A is 240 cm tall on a 30 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 180 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
13. 13.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) adding steel to concrete (c) stacking loose bricks (d) raising heavy tanks high
14. 14.🔍 Which is the odd one out? (a) raising heavy tanks high (b) keeping a simple shape (c) having a wide base (d) adding steel to concrete
15. 15.True or false: stacking loose bricks makes a building safer in earthquakes. (a) True (b) False
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 60 cm tall on a 10 cm base and tower C is 150 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
17. 17.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
18. 18.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a shake table (c) a microscope (d) a fridge
19. 19.True or false: using a heavy roof makes a building less safe in earthquakes. (a) False (b) True
20. 20.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) hanging outside (c) low down (d) on a thin pole
21. 21.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) making brittle joints (c) having a wide base (d) using flexible joints
22. 22.True or false: keeping a simple shape makes a building safer in earthquakes. (a) True (b) False
23. 23.🏚️ Three solid model towers are made of the same material. Tower A is 200 cm tall on a 40 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 A (c) tower C
24. 24.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) stacking loose bricks (c) keeping a simple shape (d) fitting rubber base pads
25. 25.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
26. 26.🔍 Which is the odd one out? (a) using flexible joints (b) building tall and narrow (c) adding cross bracing (d) keeping a simple shape
27. 27.True or false: having a wide base makes a building less safe in earthquakes. (a) False (b) True
28. 28.Which of these makes a building less safe in earthquakes? (a) leaving out steel bars (b) adding cross bracing (c) using a light roof (d) keeping a simple shape
29. 29.🏚️ Three solid model towers are made of the same material. Tower A is 280 cm tall on a 40 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 50 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
30. 30.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
31. 31.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
32. 32.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they stop shaking (d) they bend, not break
33. 33.True or false: making brittle joints makes a building less safe in earthquakes. (a) False (b) True
34. 34.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
35. 35.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) using flexible joints (d) making brittle joints
36. 36.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using a heavy roof (c) having a wide base (d) adding steel to concrete
37. 37.🏚️ 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 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 A (c) tower B
38. 38.🏚️ 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 100 cm tall on a 20 cm base and tower C is 140 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
39. 39.🔍 Which is the odd one out? (a) stacking loose bricks (b) fitting rubber base pads (c) making brittle joints (d) leaving out steel bars
40. 40.Which of these makes a building safer in earthquakes? (a) using a light roof (b) making brittle joints (c) raising heavy tanks high (d) building tall and narrow

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