Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 912 · 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 280 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
2. 2.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) skip writing results (d) measure the same way
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
7. 7.True or false: to repeat each test is good testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 200 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
12. 12.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
13. 13.True or false: to record every result is poor testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) test it only once
15. 15.True or false: to skip writing results is poor testing. (a) False (b) True
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design C (b) design B (c) design A
18. 18.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 190 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
20. 20.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
21. 21.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) choose and draw one
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) change lots at once
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design B (b) design A (c) design C
26. 26.True or false: to repeat each test is poor testing. (a) True (b) False
27. 27.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
28. 28.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
29. 29.🧪 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
30. 30.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
31. 31.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) test it only once (d) change lots at once
33. 33.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 210 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) test it only once (d) skip writing results
36. 36.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) hide a failed test
38. 38.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) repeat each test (d) use a new load each time
39. 39.True or false: to test it only once is good testing. (a) True (b) False
40. 40.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?

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