Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 825 · 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.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use a new load each time (d) use the same load
2. 2.🔢 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
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) choose and draw one (d) strengthen the weak part
4. 4.True or false: to measure the same way is good testing. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) hide a failed test (d) change lots at once
6. 6.True or false: to skip writing results is poor testing. (a) False (b) True
7. 7.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design A (b) design B (c) design C
9. 9.🧪 A paper bridge was tested three times. It held 260 g, 110 g and 140 g. What is the mean (average) load it held, in grams?
10. 10.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
12. 12.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
13. 13.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 240 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design B (c) design C
15. 15.True or false: to use a new load each time is poor testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
17. 17.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) guess, do not measure (d) measure the same way
18. 18.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
19. 19.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
20. 20.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
21. 21.🧪 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 strongest? (a) design B (b) design C (c) design A
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) record every result (d) hide a failed test
23. 23.True or false: to change only one thing is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
25. 25.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
28. 28.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
29. 29.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
30. 30.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
32. 32.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) skip writing results (d) test it only once
34. 34.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) test it only once (d) record every result
36. 36.🧪 A paper bridge was tested three times. It held 180 g, 140 g and 190 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) repeat each test (d) change only one thing
38. 38.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
39. 39.True or false: to guess, do not measure is poor testing. (a) False (b) True
40. 40.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 500 g. How many more grams did it hold?

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