Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 521 · 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 test it only once is good testing. (a) False (b) True
2. 2.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
3. 3.🧪 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 weakest? (a) design C (b) design B (c) design A
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
5. 5.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design B (b) design C (c) design A
7. 7.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
9. 9.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) change only one thing (d) measure the same way
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
12. 12.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
13. 13.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design C (b) design B (c) design A
15. 15.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 140 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to hide a failed test is poor testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to measure the same way is good testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) change lots at once
21. 21.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) hide a failed test
22. 22.True or false: to use the same load is poor testing. (a) True (b) False
23. 23.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
24. 24.True or false: to test it only once is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) choose and draw one
27. 27.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 270 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to change lots at once is good testing. (a) True (b) False
29. 29.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
30. 30.True or false: to skip writing results is poor testing. (a) False (b) True
31. 31.True or false: to change lots at once is poor testing. (a) True (b) False
32. 32.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
38. 38.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
39. 39.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 180 g. What is the mean (average) load it held, in grams?

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