Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 501 · 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 change only one thing? (a) good testing (b) poor testing
2. 2.True or false: to change lots at once is poor testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) skip writing results (d) test it only once
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.True or false: to use the same load is good testing. (a) False (b) True
6. 6.True or false: to use a new load each time is good testing. (a) False (b) True
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 190 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
9. 9.True or false: to skip writing results is good testing. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) skip writing results (d) measure the same way
11. 11.True or false: to repeat each test is good testing. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) change only one thing (d) repeat each test
13. 13.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to change only one thing is poor testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 370 g, 180 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) choose and draw one
17. 17.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) record every result (d) measure the same way
18. 18.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
19. 19.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
20. 20.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) repeat each test
21. 21.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) record every result (d) guess, do not measure
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
25. 25.🧪 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
26. 26.🔢 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
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
28. 28.True or false: to change only one thing is good testing. (a) True (b) False
29. 29.True or false: to hide a failed test is good testing. (a) False (b) True
30. 30.True or false: to measure the same way is poor testing. (a) True (b) False
31. 31.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
33. 33.True or false: to guess, do not measure is poor testing. (a) False (b) True
34. 34.🧪 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 C (b) design A (c) design B
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) build it with straws
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 260 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) skip writing results
39. 39.True or false: to change lots at once is good testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids