Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 986 · 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) two small mirrors (b) a balloon (c) a pencil (d) a ruler
2. 2.⚖️ 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 measure it (c) we change it
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
6. 6.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.⚖️ 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 mirrors (b) the object we look at (c) how clear the view is (d) the angle of the mirrors
9. 9.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) still clear water (d) a shiny steel plate
10. 10.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) black cloth (d) aluminium foil
11. 11.True or false: turmeric powder is needed for the periscope. (a) True (b) False
12. 12.🔭 Which of these reflects light well? (a) still clear water (b) a rough wooden board (c) dark soil (d) black cloth
13. 13.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
14. 14.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
15. 15.True or false: still clear water reflects light well. (a) True (b) False
16. 16.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) a rough wooden board
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the object we look at (c) the same light (d) the same carton
20. 20.⚖️ 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
21. 21.⚖️ 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) how clear the view is (c) the object we look at
22. 22.True or false: aluminium foil reflects light poorly. (a) True (b) False
23. 23.True or false: a ruler is not needed for the periscope. (a) True (b) False
24. 24.🔮 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
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
27. 27.True or false: a pencil is needed for the periscope. (a) True (b) False
28. 28.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a magnet (d) a pencil
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
30. 30.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) sticky tape (d) a magnet
31. 31.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.True or false: a mirror reflects light well. (a) True (b) False
34. 34.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
35. 35.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
36. 36.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
38. 38.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) yeast (d) vinegar
39. 39.True or false: a balloon is needed for the periscope. (a) True (b) False
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a balloon (d) an empty juice carton

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