Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 669 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
3. 3.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) a ruler (d) an empty juice carton
4. 4.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
5. 5.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
6. 6.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.⚖️ 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) the angle of the mirrors (c) how clear the view is
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
9. 9.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) an empty juice carton (d) a battery cell
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.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
12. 12.⚖️ 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 light (c) how clear the view is (d) the same carton
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
14. 14.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
16. 16.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) still clear water
17. 17.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a magnet (d) a pencil
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.⚖️ 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 change it (c) we keep it the same
25. 25.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.True or false: a shiny steel plate reflects light well. (a) True (b) False
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
28. 28.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) still clear water (d) a rough wooden board
30. 30.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) a balloon (d) an empty juice carton
31. 31.True or false: a pencil is not needed for the periscope. (a) False (b) True
32. 32.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) aluminium foil (d) black cloth
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
35. 35.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) still clear water
36. 36.⚖️ 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) False (b) True
37. 37.⚖️ 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 mirrors (b) the same carton (c) the object we look at (d) the angle of the mirrors
38. 38.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) turmeric powder (d) a pencil
40. 40.True or false: aluminium foil reflects light well. (a) False (b) True

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