Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 735 · 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.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) two small mirrors (d) an empty juice carton
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a magnet
6. 6.⚖️ 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
7. 7.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) sticky tape (d) a magnet
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
9. 9.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the object we look at
10. 10.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) vinegar (d) an empty juice carton
12. 12.True or false: still clear water reflects light poorly. (a) False (b) True
13. 13.⚖️ 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
14. 14.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) still clear water
16. 16.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.True or false: sticky tape is not needed for the periscope. (a) False (b) True
18. 18.True or false: a ruler is not needed for the periscope. (a) True (b) False
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
21. 21.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a shiny steel plate (d) a mirror
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a balloon (d) two small mirrors
23. 23.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) still clear water
24. 24.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
25. 25.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
27. 27.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a ruler (d) yeast
28. 28.True or false: yeast is not needed for the periscope. (a) False (b) True
29. 29.⚖️ 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 light (d) the same carton
30. 30.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a balloon (d) a pencil
31. 31.⚖️ 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 mirrors (c) how clear the view is
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) two small mirrors (d) an empty juice carton
33. 33.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
34. 34.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a shiny steel plate (d) aluminium foil
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) still clear water (d) a shiny steel plate
37. 37.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) turmeric powder (d) sticky tape
38. 38.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) dark soil
39. 39.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
40. 40.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) black cloth (d) a shiny steel plate

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