Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 431 · 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.🧪 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
2. 2.True or false: to change only one thing is poor testing. (a) False (b) True
3. 3.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) use the same load (d) repeat each test
5. 5.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
8. 8.True or false: to repeat each test is poor testing. (a) True (b) False
9. 9.🧪 A paper bridge was tested three times. It held 240 g, 60 g and 150 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
11. 11.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
13. 13.True or false: to record every result is good testing. (a) True (b) False
14. 14.True or false: to skip writing results is good testing. (a) True (b) False
15. 15.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
16. 16.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
19. 19.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) hide a failed test (d) use the same load
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
21. 21.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
22. 22.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
23. 23.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
24. 24.True or false: to skip writing results is poor testing. (a) False (b) True
25. 25.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 130 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
29. 29.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
30. 30.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
31. 31.True or false: to measure the same way is good testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change lots at once (d) test it only once
34. 34.True or false: to measure the same way is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
36. 36.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 100 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins
39. 39.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) measure the same way (d) skip writing results

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