Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 817 · 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 skip writing results is good testing. (a) True (b) False
2. 2.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
3. 3.True or false: to skip writing results is poor testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
5. 5.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
6. 6.🧪 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 C (b) design A (c) design B
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
8. 8.True or false: to change only one thing is poor testing. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) skip writing results (d) repeat each test
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
12. 12.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
13. 13.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B
15. 15.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
19. 19.🧪 A paper bridge was tested three times. It held 210 g, 170 g and 190 g. What is the mean (average) load it held, in grams?
20. 20.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) measure the same way
22. 22.True or false: to guess, do not measure is poor testing. (a) False (b) True
23. 23.🧪 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
24. 24.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 180 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
26. 26.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 100 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to repeat each test is poor testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) use the same load (d) skip writing results
29. 29.🧪 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 weakest? (a) design B (b) design A (c) design C
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins
31. 31.True or false: to record every result is good testing. (a) False (b) True
32. 32.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
36. 36.True or false: to test it only once is good testing. (a) True (b) False
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) read the challenge rules
38. 38.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
39. 39.True or false: to record every result is poor testing. (a) True (b) False
40. 40.🔢 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) strengthen the weak part (d) sketch three ideas

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