Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 774 · 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.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 150 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to skip writing results is good testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) choose and draw one
4. 4.🧪 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 strongest? (a) design C (b) design A (c) design B
5. 5.True or false: to change only one thing is poor testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
8. 8.True or false: to use the same load is poor testing. (a) True (b) False
9. 9.True or false: to test it only once is good testing. (a) True (b) False
10. 10.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
11. 11.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
12. 12.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
13. 13.🧪 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
14. 14.True or false: to change lots at once is good testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
16. 16.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 170 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) measure the same way (d) repeat each test
19. 19.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
20. 20.True or false: to guess, do not measure is poor testing. (a) True (b) False
21. 21.True or false: to use a new load each time is good testing. (a) True (b) False
22. 22.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design C (b) design A (c) design B
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
27. 27.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
28. 28.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) use a new load each time (d) skip writing results
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
31. 31.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) repeat each test (d) use a new load each time
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change lots at once (d) skip writing results
34. 34.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) guess, do not measure (d) test it only once
37. 37.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
38. 38.True or false: to hide a failed test is good testing. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) guess, do not measure (d) measure the same way
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) read the challenge rules

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