Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 120 · 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.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
2. 2.🧪 A paper bridge was tested three times. It held 260 g, 80 g and 170 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
4. 4.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 70 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) measure the same way (d) use the same load
6. 6.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
7. 7.True or false: to guess, do not measure is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
9. 9.🔢 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
10. 10.🧪 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
11. 11.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
12. 12.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 140 g. What is the mean (average) load it held, in grams?
13. 13.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
15. 15.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
16. 16.True or false: to change lots at once is good testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) sketch three ideas
18. 18.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) repeat each test (d) test it only once
19. 19.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
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 350 g. Which design was the strongest? (a) design B (b) design A (c) design C
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
22. 22.True or false: to change lots at once is poor testing. (a) False (b) True
23. 23.True or false: to repeat each test is poor testing. (a) False (b) True
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design B (b) design C (c) design A
25. 25.True or false: to use a new load each time is good testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 110 g. What is the mean (average) load it held, in grams?
27. 27.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
28. 28.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) repeat each test (d) change only one thing
29. 29.True or false: to use a new load each time is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) skip writing results (d) change lots at once
31. 31.True or false: to test it only once is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) measure the same way (d) guess, do not measure
33. 33.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
35. 35.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 210 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to measure the same way is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
39. 39.🧪 A paper bridge was tested three times. It held 400 g, 340 g and 280 g. What is the mean (average) load it held, in grams?
40. 40.🔢 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

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