Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 102 · 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.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
2. 2.True or false: to measure the same way is poor testing. (a) False (b) True
3. 3.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
4. 4.🔢 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
5. 5.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
6. 6.True or false: to skip writing results is good testing. (a) True (b) False
7. 7.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
9. 9.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
10. 10.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 330 g. What is the mean (average) load it held, in grams?
11. 11.🧪 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 A (c) design C
12. 12.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) skip writing results
15. 15.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 140 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the strongest? (a) design B (b) design A (c) design C
17. 17.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) use a new load each time (d) measure the same way
19. 19.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
20. 20.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 120 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) measure the same way
23. 23.🧪 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
24. 24.True or false: to record every result is good testing. (a) True (b) False
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
26. 26.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
28. 28.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
29. 29.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) guess, do not measure (d) change only one thing
30. 30.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
31. 31.True or false: to hide a failed test is poor testing. (a) False (b) True
32. 32.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
34. 34.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the strongest? (a) design A (b) design C (c) design B
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design B (b) design C (c) design A
38. 38.True or false: to change only one thing is good testing. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) skip writing results (d) test it only once
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules

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