Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 68 · 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.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
2. 2.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
3. 3.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
4. 4.True or false: to measure the same way is poor testing. (a) False (b) True
5. 5.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
6. 6.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) skip writing results (d) change lots at once
7. 7.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
8. 8.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 90 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to repeat each test is poor testing. (a) True (b) False
10. 10.True or false: to change lots at once is good testing. (a) False (b) True
11. 11.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) change lots at once (d) measure the same way
14. 14.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
17. 17.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) skip writing results (d) change only one thing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 260 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) build it with straws
21. 21.True or false: to use a new load each time is good testing. (a) True (b) False
22. 22.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
25. 25.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 330 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to change lots at once is poor testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 310 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 440 g, 250 g and 330 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
32. 32.🧪 A paper bridge was tested three times. It held 290 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) sketch three ideas
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
35. 35.🧪 A paper bridge was tested three times. It held 370 g, 250 g and 430 g. What is the mean (average) load it held, in grams?
36. 36.🧪 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
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) test it only once
38. 38.True or false: to test it only once is poor testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 200 g, 200 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules

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