Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 616 · 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) repeat each test (b) test it only once (c) guess, do not measure (d) change lots at once
2. 2.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
3. 3.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
4. 4.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
6. 6.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
9. 9.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 220 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design C (b) design A (c) design B
11. 11.🧪 A paper bridge was tested three times. It held 170 g, 80 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.🧪 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 A (b) design C (c) design B
13. 13.True or false: to change only one thing is good testing. (a) False (b) True
14. 14.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
16. 16.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) measure the same way (d) use the same load
17. 17.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
18. 18.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
20. 20.True or false: to measure the same way is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 290 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to record every result is good testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to guess, do not measure is poor testing. (a) False (b) True
25. 25.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
28. 28.🧪 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
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 A (b) design B (c) design C
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
31. 31.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
33. 33.True or false: to hide a failed test is poor testing. (a) True (b) False
34. 34.🧪 The first prototype held 200 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 160 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 400 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
39. 39.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 220 g. What is the mean (average) load it held, in grams?

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