Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 124 · 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.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a mirror (d) a dull brick
2. 2.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) aluminium foil (d) a mirror
5. 5.True or false: sticky tape is not needed for the periscope. (a) False (b) True
6. 6.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
7. 7.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
8. 8.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
9. 9.True or false: a pencil is needed for the periscope. (a) False (b) True
10. 10.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
11. 11.⚖️ 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
12. 12.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) a magnet
14. 14.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
16. 16.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
17. 17.True or false: vinegar is not needed for the periscope. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) a mirror
19. 19.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) sticky tape (d) vinegar
20. 20.🧺 Which of these is needed for the periscope? (a) a pencil (b) a magnet (c) vinegar (d) turmeric powder
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) a balloon
22. 22.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) still clear water (d) a mirror
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) an empty juice carton (d) a pencil
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 object we look at (c) the angle of the mirrors (d) the same mirrors
26. 26.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) dark soil
27. 27.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
28. 28.⚖️ 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 light
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.True or false: dark soil reflects light poorly. (a) True (b) False
34. 34.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a ruler (d) a battery cell
36. 36.True or false: a balloon is needed for the periscope. (a) True (b) False
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
38. 38.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) sticky tape (d) two small mirrors
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same mirrors (c) how clear the view is (d) the angle of the mirrors
40. 40.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) turmeric powder (c) sticky tape (d) a ruler

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