Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 71 · 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.True or false: dark soil reflects light poorly. (a) False (b) True
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
4. 4.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
5. 5.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a magnet (d) a ruler
9. 9.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same carton (d) how clear the view is
11. 11.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
12. 12.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
13. 13.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a battery cell (d) a pencil
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) aluminium foil (d) still clear water
19. 19.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a mirror
20. 20.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
21. 21.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a pencil (d) vinegar
22. 22.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) black cloth (d) a dull brick
23. 23.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.True or false: a battery cell is needed for the periscope. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
26. 26.🔭 How many times does light bounce off a mirror in a simple periscope?
27. 27.🔭 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
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) a shiny steel plate
30. 30.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) an empty juice carton (d) turmeric powder
31. 31.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) vinegar (d) two small mirrors
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
35. 35.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a magnet (d) a ruler
36. 36.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) black cloth (d) dark soil
37. 37.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) aluminium foil
38. 38.True or false: a magnet is needed for the periscope. (a) True (b) False
39. 39.True or false: a pencil is needed for the periscope. (a) False (b) True
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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