Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 358 · 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.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) skip writing results (d) use a new load each time
3. 3.True or false: to change only one thing is poor testing. (a) True (b) False
4. 4.True or false: to change lots at once is poor testing. (a) True (b) False
5. 5.True or false: to repeat each test is poor testing. (a) False (b) True
6. 6.True or false: to change lots at once is good testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) guess, do not measure (d) measure the same way
8. 8.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to test it only once is poor testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
12. 12.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
14. 14.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
15. 15.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) build it with straws
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design A (b) design B (c) design C
18. 18.True or false: to guess, do not measure is good testing. (a) False (b) True
19. 19.True or false: to use the same load is good testing. (a) True (b) False
20. 20.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
21. 21.True or false: to record every result is good testing. (a) True (b) False
22. 22.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
23. 23.🧪 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 weakest? (a) design C (b) design B (c) design A
24. 24.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
25. 25.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
26. 26.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) skip writing results (d) repeat each test
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
28. 28.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
29. 29.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
30. 30.🧪 A paper bridge was tested three times. It held 360 g, 340 g and 350 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 190 g. What is the mean (average) load it held, in grams?
33. 33.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
34. 34.🔢 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
35. 35.🧪 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
36. 36.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 200 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 310 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) use the same load (d) guess, do not measure
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) hide a failed test (d) change only one thing
40. 40.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?

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