Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 211 · 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) needed (b) not needed
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) a ruler (d) sticky tape
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) sticky tape (d) an empty juice carton
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
5. 5.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.True or false: a dull brick reflects light poorly. (a) False (b) True
8. 8.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
9. 9.⚖️ 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
10. 10.⚖️ 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) the angle of the mirrors (d) how clear the view is
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
12. 12.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
13. 13.🛟 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
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) yeast (d) a pencil
16. 16.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
17. 17.⚖️ 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 carton (b) the angle of the mirrors (c) the object we look at (d) the same mirrors
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a pencil (c) an empty juice carton (d) a ruler
19. 19.True or false: vinegar is not needed for the periscope. (a) False (b) True
20. 20.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
21. 21.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a mirror
22. 22.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) an empty juice carton (d) a battery cell
23. 23.⚖️ 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
24. 24.True or false: a rough wooden board reflects light well. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) aluminium foil (d) dark soil
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) sticky tape (d) a ruler
28. 28.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a magnet (d) two small mirrors
29. 29.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
30. 30.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) still clear water
31. 31.True or false: aluminium foil reflects light well. (a) True (b) False
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.⚖️ 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
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
36. 36.True or false: a shiny steel plate reflects light well. (a) False (b) True
37. 37.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) sticky tape (d) vinegar
40. 40.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) a rough wooden board

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