Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 804 · 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 poor testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change only one thing (d) repeat each test
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) skip writing results
5. 5.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
7. 7.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
9. 9.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
12. 12.🧪 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 B (c) design A
13. 13.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
15. 15.True or false: to use a new load each time is poor testing. (a) False (b) True
16. 16.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
17. 17.True or false: to test it only once is good testing. (a) False (b) True
18. 18.True or false: to repeat each test is good testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 230 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
21. 21.True or false: to change lots at once is good testing. (a) False (b) True
22. 22.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
24. 24.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
27. 27.True or false: to guess, do not measure is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 170 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
36. 36.🧪 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 weakest? (a) design C (b) design B (c) design A
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) hide a failed test (d) change only one thing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
40. 40.🧪 A paper bridge was tested three times. It held 170 g, 160 g and 150 g. What is the mean (average) load it held, in grams?

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