Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 971 · 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.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to use a new load each time is good testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) record every result (d) measure the same way
4. 4.🧪 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 B (c) design A
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
6. 6.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) load it with coins (d) read the challenge rules
7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
8. 8.True or false: to guess, do not measure is poor testing. (a) True (b) False
9. 9.True or false: to skip writing results is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
12. 12.🧪 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 A (c) design B
13. 13.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) use a new load each time (d) guess, do not measure
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
15. 15.True or false: to test it only once is poor testing. (a) False (b) True
16. 16.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
17. 17.🧪 A paper bridge was tested three times. It held 320 g, 150 g and 280 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
19. 19.True or false: to hide a failed test is poor testing. (a) True (b) False
20. 20.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to change only one thing is good testing. (a) False (b) True
23. 23.True or false: to record every result is poor testing. (a) True (b) False
24. 24.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
26. 26.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
27. 27.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
28. 28.True or false: to record every result is good testing. (a) False (b) True
29. 29.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
30. 30.True or false: to skip writing results is good testing. (a) False (b) True
31. 31.True or false: to change lots at once is good testing. (a) True (b) False
32. 32.🧪 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 strongest? (a) design C (b) design B (c) design A
33. 33.True or false: to use the same load is good testing. (a) True (b) False
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.True or false: to test it only once is good testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 210 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) test it only once (d) hide a failed test
38. 38.True or false: to change lots at once is poor testing. (a) True (b) False
39. 39.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
40. 40.🧪 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?

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