Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 532 · 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.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
2. 2.True or false: to skip writing results is poor testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
4. 4.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design C (b) design A (c) design B
7. 7.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
9. 9.True or false: to skip writing results is good testing. (a) True (b) False
10. 10.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
11. 11.🧪 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
12. 12.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 260 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) test it only once (d) hide a failed test
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design A (b) design C (c) design B
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
20. 20.True or false: to use a new load each time is poor testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
22. 22.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
23. 23.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
25. 25.True or false: to measure the same way is poor testing. (a) False (b) True
26. 26.True or false: to record every result is good testing. (a) True (b) False
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) use the same load (b) change only one thing (c) skip writing results (d) record every result
29. 29.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) measure the same way (d) repeat each test
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
31. 31.True or false: to guess, do not measure is good testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) record every result (d) measure the same way
33. 33.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
34. 34.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
35. 35.True or false: to test it only once is good testing. (a) True (b) False
36. 36.True or false: to repeat each test is good testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 170 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
39. 39.🔢 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
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C

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