Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 725 · 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: a rough wooden board reflects light well. (a) False (b) True
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) broken glass bits (d) loose glass panes
3. 3.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
4. 4.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
5. 5.True or false: sticky tape is needed for the periscope. (a) True (b) False
6. 6.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
7. 7.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
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 keep it the same (b) we change it (c) we measure it
11. 11.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) a mirror
13. 13.⚖️ 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
14. 14.⚖️ 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) the same light
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
16. 16.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it looks shiny (d) so it can float
17. 17.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) aluminium foil
19. 19.🔭 How many mirrors does a simple periscope use?
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
23. 23.⚖️ 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) the same light (c) how clear the view is
24. 24.True or false: a dull brick reflects light well. (a) True (b) False
25. 25.True or false: a balloon is needed for the periscope. (a) True (b) False
26. 26.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) vinegar
27. 27.True or false: a mirror reflects light well. (a) False (b) True
28. 28.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) an empty juice carton (d) sticky tape
30. 30.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
34. 34.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) a mirror (d) still clear water
35. 35.True or false: a magnet is not needed for the periscope. (a) False (b) True
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a rough wooden board (d) black cloth
38. 38.⚖️ 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
39. 39.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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