Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 943 · 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 repeat each test is poor testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) measure the same way (d) change only one thing
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) skip writing results (d) change lots at once
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
5. 5.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
7. 7.True or false: to record every result is poor testing. (a) False (b) True
8. 8.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
9. 9.True or false: to use a new load each time is good testing. (a) False (b) True
10. 10.🧪 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?
11. 11.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
13. 13.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) choose and draw one
15. 15.🧪 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 A (b) design C (c) design B
16. 16.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
17. 17.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
18. 18.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) skip writing results (d) test it only once
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
20. 20.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 350 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) record every result (d) use the same load
23. 23.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
24. 24.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) load it with coins
26. 26.🧪 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 strongest? (a) design C (b) design B (c) design A
27. 27.True or false: to test it only once is poor testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) guess, do not measure (d) repeat each test
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
30. 30.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
32. 32.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) hide a failed test
34. 34.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
36. 36.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
38. 38.True or false: to change lots at once is good testing. (a) False (b) True
39. 39.True or false: to use the same load is poor testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) test it only once (d) skip writing results

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