Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 80 · 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.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
2. 2.🛟 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
3. 3.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) sticky tape (d) a balloon
4. 4.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) a balloon (d) a ruler
5. 5.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) a shiny steel plate
6. 6.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) black cloth (d) a dull brick
7. 7.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
9. 9.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
10. 10.⚖️ 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 keep it the same (c) we change it
11. 11.🔭 How many mirrors does a simple periscope use?
12. 12.True or false: a dull brick reflects light well. (a) False (b) True
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
14. 14.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
15. 15.True or false: still clear water reflects light well. (a) False (b) True
16. 16.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a battery cell (d) an empty juice carton
18. 18.True or false: black cloth reflects light well. (a) False (b) True
19. 19.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
20. 20.⚖️ 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 object we look at
21. 21.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a shiny steel plate (d) aluminium foil
22. 22.True or false: dark soil reflects light poorly. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a mirror (d) a rough wooden board
24. 24.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) two small mirrors (d) a pencil
26. 26.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
27. 27.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) a rough wooden board
28. 28.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
29. 29.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
31. 31.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
33. 33.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
34. 34.⚖️ 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
35. 35.🔭 How many times does light bounce off a mirror in a simple periscope?
36. 36.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a dull brick (d) still clear water
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) sticky tape (d) vinegar
39. 39.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a pencil (c) yeast (d) a balloon
40. 40.⚖️ 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) True (b) False

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