Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 585 · 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.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
2. 2.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
4. 4.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) record every result (d) repeat each test
6. 6.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
8. 8.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
10. 10.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) read the challenge rules
12. 12.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
13. 13.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 230 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) measure the same way (d) hide a failed test
15. 15.True or false: to record every result is poor testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
17. 17.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
18. 18.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
19. 19.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
21. 21.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 250 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) choose and draw one
23. 23.True or false: to measure the same way is poor testing. (a) True (b) False
24. 24.True or false: to hide a failed test is good testing. (a) False (b) True
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 comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
27. 27.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) test it only once (d) hide a failed test
30. 30.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
31. 31.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
32. 32.True or false: to use the same load is poor testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 70 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to measure the same way is good testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) guess, do not measure
37. 37.🔢 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) build it with straws
38. 38.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
40. 40.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing

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