Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 809 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) sticky tape (d) an empty juice carton
2. 2.True or false: a dull brick reflects light well. (a) True (b) False
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) turmeric powder
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a pencil (d) turmeric powder
8. 8.⚖️ 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 measure it (c) we keep it the same
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) a battery cell (d) two small mirrors
10. 10.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) black cloth (d) a dull brick
11. 11.True or false: black cloth reflects light well. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same light (c) the object we look at (d) how clear the view is
13. 13.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) black cloth (d) aluminium foil
16. 16.⚖️ 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
17. 17.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) sticky tape (c) an empty juice carton (d) a ruler
19. 19.🔮 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
20. 20.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) yeast (d) an empty juice carton
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) a magnet
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same mirrors (c) the angle of the mirrors (d) the same light
25. 25.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so light reaches the eye (d) so it can float
27. 27.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
28. 28.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
29. 29.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) black cloth
30. 30.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) still clear water (d) a shiny steel plate
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
33. 33.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
36. 36.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
37. 37.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a mirror (d) dark soil
38. 38.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
39. 39.True or false: a mirror reflects light well. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True

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