Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 761 · 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? Which of these is the one thing we change? (a) the same light (b) the angle of the mirrors (c) the same mirrors (d) the same carton
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
4. 4.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) a shiny steel plate
5. 5.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) aluminium foil (d) still clear water
7. 7.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
8. 8.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) still clear water (d) aluminium foil
9. 9.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a dull brick (d) dark soil
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) a ruler (d) two small mirrors
11. 11.🔭 Which of these reflects light poorly? (a) still clear water (b) a rough wooden board (c) a shiny steel plate (d) a mirror
12. 12.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
13. 13.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
14. 14.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) aluminium foil (b) dark soil (c) a shiny steel plate (d) a mirror
16. 16.🧺 Which of these is not needed for the periscope? (a) yeast (b) sticky tape (c) two small mirrors (d) an empty juice carton
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
19. 19.True or false: yeast is not needed for the periscope. (a) False (b) True
20. 20.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) to make it heavy (d) so it looks shiny
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a magnet (d) two small mirrors
22. 22.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) turmeric powder (d) vinegar
23. 23.True or false: a battery cell is needed for the periscope. (a) True (b) False
24. 24.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
25. 25.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) a battery cell
27. 27.True or false: still clear water reflects light well. (a) True (b) False
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) yeast (d) an empty juice carton
30. 30.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) yeast (d) a ruler
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
33. 33.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
35. 35.True or false: a balloon is needed for the periscope. (a) True (b) False
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors
37. 37.True or false: a mirror reflects light poorly. (a) False (b) True
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) dark soil (d) a rough wooden board

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