Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 402 · 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.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) test it only once
2. 2.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
4. 4.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
5. 5.True or false: to skip writing results is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) build it with straws
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
8. 8.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
9. 9.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
10. 10.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design B (b) design C (c) design A
13. 13.True or false: to guess, do not measure is poor testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 140 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 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
17. 17.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
18. 18.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to measure the same way is poor testing. (a) False (b) True
20. 20.🧪 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
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
22. 22.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 240 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
24. 24.🔢 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
25. 25.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to record every result is good testing. (a) True (b) False
27. 27.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
28. 28.🧪 A paper bridge was tested three times. It held 190 g, 130 g and 130 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) skip writing results (d) guess, do not measure
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
32. 32.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) use a new load each time
33. 33.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
35. 35.True or false: to change lots at once is good testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
37. 37.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) record every result (d) guess, do not measure
38. 38.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 310 g, 130 g and 250 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing

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