Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 512 · 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.True or false: to hide a failed test is good testing. (a) True (b) False
2. 2.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 400 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
4. 4.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the strongest? (a) design B (b) design C (c) design A
7. 7.True or false: to test it only once is good testing. (a) False (b) True
8. 8.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) use the same load (d) measure the same way
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
12. 12.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
14. 14.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
16. 16.True or false: to measure the same way is good testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
18. 18.True or false: to use a new load each time is good testing. (a) True (b) False
19. 19.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 180 g, 160 g and 200 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to skip writing results is good testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 430 g, 340 g and 250 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
26. 26.🧪 A paper bridge was tested three times. It held 310 g, 160 g and 250 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 330 g. What is the mean (average) load it held, in grams?
28. 28.🧪 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 A (b) design C (c) design B
29. 29.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.🧪 The first prototype held 90 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 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) load it with coins
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design A (c) design C
35. 35.🧪 A paper bridge was tested three times. It held 310 g, 280 g and 340 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to hide a failed test is poor testing. (a) False (b) True
37. 37.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
38. 38.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
40. 40.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing

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