Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 176 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a tree (d) a wall
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
4. 4.True or false: sticky tape is not needed for the periscope. (a) False (b) True
5. 5.⚖️ 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
6. 6.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a rough wooden board (d) a dull brick
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) sticky tape (d) a pencil
10. 10.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
11. 11.True or false: aluminium foil reflects light well. (a) True (b) False
12. 12.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
13. 13.🛟 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
14. 14.True or false: vinegar is not needed for the periscope. (a) True (b) False
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a magnet (d) a pencil
16. 16.⚖️ 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 object we look at (c) how clear the view is
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same light (d) the same carton
19. 19.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) aluminium foil (d) still clear water
21. 21.🛟 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
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
24. 24.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a rough wooden board (d) a dull brick
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.🧺 Which of these is not needed for the periscope? (a) a pencil (b) turmeric powder (c) a ruler (d) sticky tape
28. 28.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) sticky tape
29. 29.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) aluminium foil (d) a dull brick
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same light (c) how clear the view is (d) the angle of the mirrors
31. 31.True or false: sticky tape is needed for the periscope. (a) False (b) True
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.True or false: a mirror reflects light well. (a) True (b) False
34. 34.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) a balloon (d) two small mirrors
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) an empty juice carton (d) a ruler
36. 36.⚖️ 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
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
38. 38.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a magnet (d) a pencil
40. 40.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a shiny steel plate

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