Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 882 · 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.True or false: to use a new load each time is good testing. (a) True (b) False
2. 2.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
5. 5.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 370 g, 310 g and 370 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
9. 9.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change only one thing (d) guess, do not measure
11. 11.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 280 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
13. 13.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) measure the same way (d) change only one thing
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) change only one thing (d) measure the same way
15. 15.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
16. 16.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
17. 17.True or false: to measure the same way is good testing. (a) True (b) False
18. 18.True or false: to change only one thing is poor testing. (a) True (b) False
19. 19.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) use a new load each time (d) measure the same way
21. 21.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
22. 22.True or false: to repeat each test is poor testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 170 g, 60 g and 250 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
26. 26.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
28. 28.True or false: to change only one thing is good testing. (a) True (b) False
29. 29.True or false: to measure the same way is poor testing. (a) True (b) False
30. 30.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) repeat each test (d) change only one thing
32. 32.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
36. 36.True or false: to change lots at once is good testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 190 g, 130 g and 220 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
39. 39.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
40. 40.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) test it only once (d) repeat each test

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