Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 353 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.True or false: to use the same load is good testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design B (b) design A (c) design C
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) skip writing results (d) use a new load each time
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 A (b) design C (c) design B
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
10. 10.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change lots at once (d) record every result
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) use the same load (d) measure the same way
14. 14.True or false: to hide a failed test is poor testing. (a) True (b) False
15. 15.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
17. 17.🧪 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
18. 18.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) load it with coins
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) guess, do not measure (d) record every result
20. 20.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 250 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to skip writing results is poor testing. (a) True (b) False
22. 22.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) change only one thing
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
25. 25.🧪 A paper bridge was tested three times. It held 280 g, 80 g and 180 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to change lots at once is poor testing. (a) True (b) False
27. 27.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) use the same load (d) change only one thing
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) test it only once (d) use a new load each time
30. 30.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) skip writing results
31. 31.True or false: to hide a failed test is good testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 180 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design B (b) design A (c) design C
34. 34.True or false: to test it only once is good testing. (a) False (b) True
35. 35.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
36. 36.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
37. 37.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 300 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas

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