Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 773 · 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.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) using flexible joints (c) adding steel to concrete (d) fitting rubber base pads
2. 2.🏚️ 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 30 cm tall on a 10 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
3. 3.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
4. 4.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) using a heavy roof (c) using flexible joints (d) leaving out steel bars
5. 5.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a microscope (c) a shake table (d) a fridge
6. 6.🔍 Which is the odd one out? (a) adding cross bracing (b) keeping a simple shape (c) stacking loose bricks (d) fitting rubber base pads
7. 7.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
8. 8.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
9. 9.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a heavy roof (c) using a light roof (d) leaving out steel bars
10. 10.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) stacking loose bricks (c) fitting rubber base pads (d) keeping a simple shape
11. 11.🔍 Which is the odd one out? (a) building tall and narrow (b) using a heavy roof (c) raising heavy tanks high (d) fitting rubber base pads
12. 12.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
13. 13.🔍 Which is the odd one out? (a) keeping a simple shape (b) using flexible joints (c) having a wide base (d) leaving out steel bars
14. 14.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) making brittle joints (c) keeping a simple shape (d) building tall and narrow
15. 15.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
16. 16.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they look nice (c) they stop shaking (d) they are cheap
17. 17.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a light roof (c) stacking loose bricks (d) using a heavy roof
18. 18.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
19. 19.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
20. 20.Which of these makes a building safer in earthquakes? (a) having a wide base (b) making brittle joints (c) raising heavy tanks high (d) building tall and narrow
21. 21.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) adding cross bracing (b) using a light roof (c) using a heavy roof (d) fitting rubber base pads
23. 23.🏚️ 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 60 cm tall on a 20 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 A (c) tower C
24. 24.🏚️ Three solid model towers are made of the same material. Tower A is 100 cm tall on a 20 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 60 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
25. 25.🔍 Which is the odd one out? (a) building tall and narrow (b) raising heavy tanks high (c) using flexible joints (d) using a heavy roof
26. 26.🏚️ 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 40 cm tall on a 20 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
27. 27.🔍 Which is the odd one out? (a) building tall and narrow (b) using a heavy roof (c) leaving out steel bars (d) adding cross bracing
28. 28.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
29. 29.🏚️ 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 160 cm tall on a 40 cm base and tower C is 180 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
30. 30.🏚️ 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 60 cm tall on a 20 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
31. 31.🔍 Which is the odd one out? (a) building tall and narrow (b) adding steel to concrete (c) leaving out steel bars (d) making brittle joints
32. 32.True or false: fitting rubber base pads 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 60 cm tall on a 20 cm wide base, tower B is 20 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
34. 34.Which of these makes a building safer in earthquakes? (a) fitting rubber base pads (b) building tall and narrow (c) stacking loose bricks (d) leaving out steel bars
35. 35.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) adding cross bracing (c) building tall and narrow (d) making brittle joints
36. 36.True or false: using a heavy roof makes a building less safe in earthquakes. (a) True (b) False
37. 37.🏚️ 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 80 cm tall on a 20 cm base and tower C is 60 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
38. 38.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
39. 39.🏚️ 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 20 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
40. 40.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe

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