Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 250 · 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) test it only once (c) measure the same way (d) use the same load
2. 2.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
3. 3.🧪 A paper bridge was tested three times. It held 230 g, 210 g and 250 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) measure the same way (d) repeat each test
5. 5.True or false: to test it only once is poor testing. (a) False (b) True
6. 6.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
7. 7.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
8. 8.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
9. 9.True or false: to change lots at once is poor testing. (a) True (b) False
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🔢 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
12. 12.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
13. 13.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
14. 14.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
15. 15.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
16. 16.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 240 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to use a new load each time is good testing. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) guess, do not measure (d) skip writing results
19. 19.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
20. 20.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
21. 21.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
22. 22.True or false: to skip writing results is good testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) hide a failed test (d) skip writing results
24. 24.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
25. 25.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
26. 26.🧪 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 A (b) design C (c) design B
27. 27.🧪 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
28. 28.True or false: to change only one thing is good testing. (a) False (b) True
29. 29.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 380 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
31. 31.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
33. 33.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use a new load each time (d) use the same load
36. 36.🧪 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 B (b) design C (c) design A
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) hide a failed test (d) use the same load
39. 39.🔢 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
40. 40.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 350 g. What is the mean (average) load it held, in grams?

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