Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 694 · 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.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) change only one thing (d) hide a failed test
3. 3.True or false: to repeat each test is good testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) guess, do not measure (d) measure the same way
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
6. 6.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
7. 7.🧪 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
8. 8.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
9. 9.True or false: to change only one thing is good testing. (a) True (b) False
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
12. 12.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
13. 13.True or false: to hide a failed test is good testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) use the same load (d) repeat each test
17. 17.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) guess, do not measure
21. 21.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 270 g, 260 g and 250 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to measure the same way is good testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
25. 25.🧪 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 B (b) design C (c) design A
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design C (b) design A (c) design B
27. 27.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
29. 29.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 190 g. What is the mean (average) load it held, in grams?
30. 30.🧪 A paper bridge was tested three times. It held 200 g, 130 g and 150 g. What is the mean (average) load it held, in grams?
31. 31.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) record every result (d) guess, do not measure
33. 33.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
36. 36.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) hide a failed test (d) use a new load each time
38. 38.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 210 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) test it only once (d) repeat each test

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