Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 391 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) yeast (d) two small mirrors
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
4. 4.True or false: still clear water reflects light well. (a) True (b) False
5. 5.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
6. 6.True or false: a mirror reflects light poorly. (a) False (b) True
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors
8. 8.True or false: two small mirrors is needed for the periscope. (a) False (b) True
9. 9.True or false: a rough wooden board reflects light well. (a) True (b) False
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) two small mirrors (d) sticky tape
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) still clear water (d) black cloth
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) sticky tape (d) two small mirrors
16. 16.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) an empty juice carton (d) a pencil
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
19. 19.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) still clear water
20. 20.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
23. 23.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
24. 24.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a mirror
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the angle of the mirrors (c) how clear the view is (d) the object we look at
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) turmeric powder
27. 27.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
28. 28.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
29. 29.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
31. 31.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
32. 32.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) black cloth
33. 33.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
34. 34.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
37. 37.True or false: a ruler is needed for the periscope. (a) True (b) False
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) vinegar (d) a pencil
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) vinegar (d) sticky tape

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