Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 274 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
2. 2.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
3. 3.True or false: to record every result is poor testing. (a) False (b) True
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design B (b) design A (c) design C
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the weakest? (a) design A (b) design C (c) design B
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
7. 7.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
8. 8.True or false: to use a new load each time is good testing. (a) True (b) False
9. 9.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
10. 10.🧪 A paper bridge was tested three times. It held 410 g, 240 g and 370 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to use the same load is poor testing. (a) False (b) True
12. 12.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to test it only once is good testing. (a) True (b) False
14. 14.True or false: to repeat each test is poor testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
18. 18.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
19. 19.True or false: to repeat each test is good testing. (a) True (b) False
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
21. 21.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 140 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
23. 23.True or false: to measure the same way is good testing. (a) False (b) True
24. 24.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
25. 25.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
26. 26.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
29. 29.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change only one thing (d) use a new load each time
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins
31. 31.True or false: to record every result is good testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
33. 33.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.True or false: to change only one thing is good testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
37. 37.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
39. 39.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C

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