Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 867 · 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.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
2. 2.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
3. 3.True or false: to skip writing results is good testing. (a) False (b) True
4. 4.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
5. 5.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
6. 6.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
7. 7.🧪 A paper bridge was tested three times. It held 250 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
10. 10.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
11. 11.True or false: to repeat each test is poor testing. (a) True (b) False
12. 12.True or false: to change only one thing is good testing. (a) False (b) True
13. 13.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the strongest? (a) design C (b) design B (c) design A
15. 15.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
16. 16.True or false: to repeat each test is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
19. 19.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) test it only once (d) change only one thing
20. 20.🧪 A paper bridge was tested three times. It held 410 g, 350 g and 290 g. What is the mean (average) load it held, in grams?
21. 21.🧪 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 strongest? (a) design C (b) design B (c) design A
22. 22.True or false: to measure the same way is good testing. (a) False (b) True
23. 23.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) sketch three ideas
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
25. 25.True or false: to change lots at once is poor testing. (a) False (b) True
26. 26.True or false: to record every result is poor testing. (a) False (b) True
27. 27.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) record every result (d) change lots at once
30. 30.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
31. 31.True or false: to guess, do not measure is poor testing. (a) False (b) True
32. 32.True or false: to record every result is good testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 150 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to use the same load is good testing. (a) True (b) False
36. 36.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
37. 37.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
38. 38.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 380 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) use the same load (d) record every result
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part

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