Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 35 · 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.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the strongest? (a) design A (b) design C (c) design B
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
5. 5.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
6. 6.True or false: to record every result is poor testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) test it only once (d) repeat each test
8. 8.🧪 A paper bridge was tested three times. It held 350 g, 170 g and 290 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
10. 10.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
11. 11.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) repeat each test (d) measure the same way
13. 13.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
15. 15.🧪 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 A (b) design B (c) design C
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) change lots at once (d) change only one thing
18. 18.🧪 A paper bridge was tested three times. It held 420 g, 310 g and 320 g. What is the mean (average) load it held, in grams?
19. 19.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design B (b) design A (c) design C
21. 21.🔢 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) load it with coins
22. 22.True or false: to change lots at once is poor testing. (a) True (b) False
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design C (b) design B (c) design A
24. 24.🔢 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
25. 25.True or false: to use a new load each time is good testing. (a) True (b) False
26. 26.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
27. 27.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
28. 28.True or false: to measure the same way is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 280 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
32. 32.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) read the challenge rules
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
35. 35.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 400 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) record every result (d) hide a failed test
40. 40.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?

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