Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 216 · 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) read the challenge rules
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change lots at once (d) use a new load each time
3. 3.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) use the same load (d) repeat each test
4. 4.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
5. 5.True or false: to measure the same way is poor testing. (a) True (b) False
6. 6.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
9. 9.True or false: to record every result is poor testing. (a) False (b) True
10. 10.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
11. 11.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
13. 13.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
14. 14.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
15. 15.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
16. 16.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 180 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design B (b) design C (c) design A
19. 19.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 230 g. What is the mean (average) load it held, in grams?
20. 20.True or false: to use a new load each time is good testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
24. 24.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
25. 25.True or false: to test it only once is poor testing. (a) True (b) False
26. 26.True or false: to repeat each test is poor testing. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) hide a failed test (d) measure the same way
28. 28.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
29. 29.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) change lots at once (d) hide a failed test
32. 32.True or false: to change only one thing is good testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
34. 34.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 330 g. What is the mean (average) load it held, in grams?
35. 35.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
36. 36.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
39. 39.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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