Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 735 · 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.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
2. 2.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
3. 3.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
4. 4.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
5. 5.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
6. 6.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) hide a failed test (d) test it only once
9. 9.🧪 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
10. 10.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
12. 12.True or false: to repeat each test is good testing. (a) False (b) True
13. 13.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
14. 14.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
15. 15.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) test it only once
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) use a new load each time
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change lots at once (d) change only one thing
19. 19.🧪 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
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design A (c) design C
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 380 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to use the same load is good testing. (a) True (b) False
24. 24.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 180 g, 160 g and 200 g. What is the mean (average) load it held, in grams?
26. 26.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) sketch three ideas
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design C (b) design A (c) design B
28. 28.True or false: to guess, do not measure is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 270 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to repeat each test is poor testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
33. 33.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
34. 34.True or false: to measure the same way is good testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
36. 36.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
37. 37.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
38. 38.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
40. 40.True or false: to guess, do not measure is good testing. (a) True (b) False

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