Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 409 · 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.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) use a new load each time (d) change lots at once
2. 2.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) hide a failed test
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design B (b) design A (c) design C
5. 5.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
7. 7.True or false: to test it only once is poor testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
9. 9.🔢 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
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) record every result (d) change only one thing
11. 11.True or false: to record every result is good testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
13. 13.🔢 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
14. 14.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
15. 15.True or false: to use the same load is good testing. (a) True (b) False
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 380 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
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design C (b) design B (c) design A
18. 18.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
19. 19.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
20. 20.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) change lots at once (d) hide a failed test
22. 22.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the weakest? (a) design C (b) design A (c) design B
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
26. 26.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 210 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design B (c) design C
29. 29.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
30. 30.True or false: to skip writing results is good testing. (a) False (b) True
31. 31.🧪 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
32. 32.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
33. 33.🧪 A paper bridge was tested three times. It held 300 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use a new load each time (d) measure the same way
35. 35.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
36. 36.True or false: to use the same load is poor testing. (a) False (b) True
37. 37.True or false: to hide a failed test is poor testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 190 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 “load it with coins”? (a) load it with coins (b) sketch three ideas
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) build it with straws

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