Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 41 · 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) False (b) True
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design A (b) design C (c) design B
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) hide a failed test (d) skip writing results
7. 7.🧪 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
8. 8.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
9. 9.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) guess, do not measure (d) use the same load
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) build it with straws
12. 12.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
13. 13.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
14. 14.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
15. 15.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 160 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 220 g, 100 g and 280 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to change lots at once is poor testing. (a) False (b) True
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🧪 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 A (b) design C (c) design B
20. 20.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 300 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
22. 22.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
23. 23.🧪 A paper bridge was tested three times. It held 410 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
25. 25.True or false: to hide a failed test is good testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 80 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to use the same load is poor testing. (a) False (b) True
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
29. 29.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
30. 30.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
31. 31.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
32. 32.True or false: to use a new load each time is good testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
34. 34.True or false: to test it only once is poor testing. (a) False (b) True
35. 35.True or false: to skip writing results is poor testing. (a) True (b) False
36. 36.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
37. 37.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) test it only once (d) repeat each test
38. 38.🔢 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
39. 39.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 220 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing

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