Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 940 · 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) an empty juice carton (b) a balloon (c) sticky tape (d) a pencil
2. 2.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
3. 3.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) a dull brick
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
6. 6.🔭 How many mirrors does a simple periscope use?
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 mirrors (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? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🔭 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
10. 10.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
11. 11.True or false: aluminium foil reflects light poorly. (a) True (b) False
12. 12.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
13. 13.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a magnet (d) a pencil
14. 14.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a shiny steel plate (d) still clear water
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.True or false: still clear water reflects light poorly. (a) True (b) False
19. 19.⚖️ 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 angle of the mirrors (c) the same light (d) how clear the view is
20. 20.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
21. 21.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a mirror (d) a dull brick
22. 22.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) turmeric powder (d) two small mirrors
23. 23.True or false: a magnet is not needed for the periscope. (a) True (b) False
24. 24.⚖️ 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
25. 25.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) black cloth (d) a dull brick
26. 26.⚖️ 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) False (b) True
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) sticky tape (d) yeast
29. 29.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
30. 30.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
32. 32.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
33. 33.True or false: sticky tape is not needed for the periscope. (a) False (b) True
34. 34.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
35. 35.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
37. 37.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same carton (c) the angle of the mirrors
39. 39.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) dark soil
40. 40.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) turmeric powder (d) a magnet

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