Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 158 · 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 220 g, 170 g and 240 g. What is the mean (average) load it held, in grams?
2. 2.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
3. 3.True or false: to measure the same way is poor testing. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) guess, do not measure (d) change lots at once
5. 5.🧪 A paper bridge was tested three times. It held 370 g, 310 g and 340 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
8. 8.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
11. 11.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
12. 12.True or false: to use the same load is good testing. (a) True (b) False
13. 13.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
14. 14.True or false: to skip writing results is poor testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) record every result (d) use the same load
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) load it with coins
17. 17.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change lots at once (d) guess, do not measure
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
21. 21.True or false: to hide a failed test is good testing. (a) True (b) False
22. 22.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 400 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) change only one thing (d) change lots at once
29. 29.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
30. 30.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 250 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to hide a failed test is poor testing. (a) False (b) True
32. 32.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 170 g. What is the mean (average) load it held, in grams?
33. 33.🧪 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
34. 34.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
35. 35.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) use the same load
36. 36.🔢 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) sketch three ideas (d) choose and draw one
37. 37.True or false: to change only one thing is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🔢 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
40. 40.True or false: to use a new load each time is good testing. (a) True (b) False

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