Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 739 · 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.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) guess, do not measure
2. 2.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
3. 3.True or false: to measure the same way is good testing. (a) True (b) False
4. 4.True or false: to repeat each test is good testing. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) measure the same way (d) record every result
7. 7.True or false: to hide a failed test is poor testing. (a) False (b) True
8. 8.True or false: to measure the same way is poor testing. (a) True (b) False
9. 9.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.True or false: to change lots at once is poor testing. (a) False (b) True
12. 12.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
15. 15.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
16. 16.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 250 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
19. 19.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
21. 21.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
22. 22.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
23. 23.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 380 g, 330 g and 280 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) change only one thing (d) repeat each test
27. 27.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
28. 28.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 310 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
30. 30.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) repeat each test (d) use a new load each time
31. 31.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) load it with coins
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
34. 34.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to hide a failed test is good testing. (a) False (b) True
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.True or false: to skip writing results is good testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 440 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?

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