Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 676 · 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 change only one thing is good testing. (a) True (b) False
2. 2.True or false: to guess, do not measure is poor testing. (a) True (b) False
3. 3.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 400 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
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🧪 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
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design B (b) design C (c) design A
9. 9.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
11. 11.True or false: to hide a failed test is good testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
13. 13.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
14. 14.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) test it only once (d) repeat each test
16. 16.True or false: to skip writing results is poor testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to use a new load each time is good testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
20. 20.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) measure the same way (d) repeat each test
21. 21.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
22. 22.True or false: to repeat each test is poor testing. (a) False (b) True
23. 23.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
24. 24.True or false: to measure the same way is poor testing. (a) False (b) True
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
29. 29.🧪 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 strongest? (a) design C (b) design B (c) design A
30. 30.True or false: to repeat each test is good testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
32. 32.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
33. 33.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) build it with straws
34. 34.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
35. 35.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
36. 36.True or false: to record every result is poor testing. (a) True (b) False
37. 37.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
39. 39.True or false: to change only one thing is poor testing. (a) True (b) False
40. 40.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 140 g. What is the mean (average) load it held, in grams?

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