Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 816 · 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) turmeric powder (b) a pencil (c) an empty juice carton (d) two small mirrors
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
4. 4.True or false: a shiny steel plate reflects light well. (a) False (b) True
5. 5.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) turmeric powder (d) vinegar
7. 7.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
8. 8.⚖️ 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
9. 9.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) still clear water (d) dark soil
10. 10.True or false: a dull brick reflects light poorly. (a) False (b) True
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) two small mirrors (d) a ruler
12. 12.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
13. 13.⚖️ 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 light (b) the object we look at (c) how clear the view is (d) the angle of the mirrors
14. 14.True or false: two small mirrors is needed for the periscope. (a) True (b) False
15. 15.⚖️ 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 change it (c) we measure it
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 keep it the same (c) we measure it
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.⚖️ 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 carton (c) how clear the view is
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
21. 21.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it looks shiny (d) so it can float
22. 22.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
23. 23.True or false: a magnet is needed for the periscope. (a) False (b) True
24. 24.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) turmeric powder (d) vinegar
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a rough wooden board
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) how clear the view is (c) the same light (d) the same mirrors
31. 31.🛟 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
32. 32.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see germs (d) see in the dark
33. 33.⚖️ 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
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) yeast (d) an empty juice carton
36. 36.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) black cloth
37. 37.True or false: a rough wooden board reflects light well. (a) True (b) False
38. 38.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) vinegar (d) a ruler
40. 40.🔭 How many times does light bounce off a mirror in a simple periscope?

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