Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 276 · 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 80 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
2. 2.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
3. 3.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
4. 4.🧪 A paper bridge was tested three times. It held 240 g, 70 g and 200 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
6. 6.🧪 A paper bridge was tested three times. It held 230 g, 200 g and 170 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
8. 8.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) hide a failed test (d) change lots at once
12. 12.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
13. 13.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
15. 15.True or false: to skip writing results is good testing. (a) True (b) False
16. 16.True or false: to guess, do not measure is good testing. (a) False (b) True
17. 17.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
18. 18.🧪 A paper bridge was tested three times. It held 160 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) test it only once (d) change only one thing
20. 20.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
21. 21.True or false: to use a new load each time is good testing. (a) True (b) False
22. 22.🧪 A paper bridge was tested three times. It held 240 g, 70 g and 140 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
24. 24.True or false: to test it only once is good testing. (a) True (b) False
25. 25.🧪 A paper bridge was tested three times. It held 310 g, 150 g and 260 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) measure the same way (d) repeat each test
27. 27.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
28. 28.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) change only one thing (d) repeat each test
29. 29.🔢 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) build it with straws
30. 30.True or false: to use the same load is poor testing. (a) False (b) True
31. 31.True or false: to measure the same way is good testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) record every result (d) measure the same way
33. 33.True or false: to hide a failed test is good testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
38. 38.True or false: to test it only once is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
40. 40.🧪 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 strongest? (a) design C (b) design B (c) design A

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