Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 784 · 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.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
2. 2.🧪 A paper bridge was tested three times. It held 180 g, 90 g and 240 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
4. 4.🧪 A paper bridge was tested three times. It held 320 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) change lots at once (d) use the same load
6. 6.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) hide a failed test (d) record every result
7. 7.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
8. 8.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 240 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to use a new load each time is good testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) hide a failed test (d) change only one thing
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) record every result (d) repeat each test
14. 14.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
15. 15.True or false: to record every result is poor testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
17. 17.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.True or false: to change only one thing is poor testing. (a) True (b) False
21. 21.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
24. 24.True or false: to measure the same way is good testing. (a) True (b) False
25. 25.True or false: to hide a failed test is good testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 260 g. What is the mean (average) load it held, in grams?
27. 27.🔢 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
28. 28.True or false: to change only one thing is good testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) use a new load each time (d) skip writing results
30. 30.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) test it only once (d) repeat each test
31. 31.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
32. 32.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) use the same load (d) repeat each test
33. 33.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
34. 34.True or false: to test it only once is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
37. 37.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
39. 39.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas

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