Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 217 · 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 160 cm tall on a 40 cm wide base, tower B is 10 cm tall on a 10 cm base and tower C is 80 cm tall on a 40 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) True (b) False
3. 3.🔍 Which is the odd one out? (a) adding cross bracing (b) making brittle joints (c) having a wide base (d) using flexible joints
4. 4.🏚️ 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 30 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 B (c) tower A
5. 5.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) leaving out steel bars (c) making brittle joints (d) using a light roof
6. 6.🏚️ 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 10 cm tall on a 10 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
7. 7.🔍 Which is the odd one out? (a) building tall and narrow (b) raising heavy tanks high (c) adding steel to concrete (d) making brittle joints
8. 8.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on the very top (c) on a thin pole (d) low down
9. 9.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they are cheap (c) they stop shaking (d) they look nice
10. 10.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
11. 11.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) building tall and narrow (c) keeping a simple shape (d) making brittle joints
12. 12.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) True (b) False
13. 13.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) building tall and narrow (c) using flexible joints (d) raising heavy tanks high
14. 14.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
15. 15.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a heavy roof (c) leaving out steel bars (d) fitting rubber base pads
16. 16.True or false: building tall and narrow makes a building safer in earthquakes. (a) False (b) True
17. 17.True or false: stacking loose bricks makes a building safer in earthquakes. (a) True (b) False
18. 18.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) fitting rubber base pads (c) using a heavy roof (d) using a light roof
19. 19.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) leaving out steel bars (c) keeping a simple shape (d) using flexible joints
20. 20.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
22. 22.🔍 Which is the odd one out? (a) adding steel to concrete (b) stacking loose bricks (c) keeping a simple shape (d) adding cross bracing
23. 23.🔍 Which is the odd one out? (a) raising heavy tanks high (b) stacking loose bricks (c) using a heavy roof (d) using a light roof
24. 24.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) True (b) False
25. 25.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) building tall and narrow (c) leaving out steel bars (d) adding steel to concrete
26. 26.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) fitting rubber base pads (c) stacking loose bricks (d) adding cross bracing
27. 27.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a shake table (c) a telescope (d) a fridge
28. 28.🔍 Which is the odd one out? (a) leaving out steel bars (b) using a light roof (c) keeping a simple shape (d) fitting rubber base pads
29. 29.🔍 Which is the odd one out? (a) using a heavy roof (b) building tall and narrow (c) adding cross bracing (d) raising heavy tanks high
30. 30.True or false: leaving out steel bars makes a building safer in earthquakes. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) building tall and narrow (b) making brittle joints (c) using flexible joints (d) raising heavy tanks high
32. 32.🏚️ 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 30 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
33. 33.🏚️ 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 120 cm tall on a 30 cm base and tower C is 60 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
34. 34.🏚️ 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 150 cm tall on a 30 cm base and tower C is 60 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
35. 35.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
36. 36.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) building tall and narrow (c) making brittle joints (d) having a wide base
37. 37.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
38. 38.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
39. 39.🏚️ 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 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.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True

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