Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 733 · 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.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
2. 2.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) two small mirrors (c) a battery cell (d) a magnet
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
6. 6.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the object we look at
8. 8.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall
10. 10.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) a shiny steel plate
11. 11.True or false: turmeric powder is needed for the periscope. (a) True (b) False
12. 12.⚖️ 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) how clear the view is (c) the angle of the mirrors
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
14. 14.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) black cloth
15. 15.True or false: vinegar is not needed for the periscope. (a) False (b) True
16. 16.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a rough wooden board (d) dark soil
17. 17.True or false: yeast is not needed for the periscope. (a) False (b) True
18. 18.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
19. 19.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
20. 20.⚖️ 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) False (b) True
21. 21.⚖️ 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) True (b) False
22. 22.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
23. 23.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
24. 24.True or false: a dull brick reflects light poorly. (a) False (b) True
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.⚖️ 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
28. 28.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.⚖️ 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) True (b) False
30. 30.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) black cloth (d) a dull brick
33. 33.⚖️ 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
34. 34.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a mirror (d) still clear water
35. 35.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) evaporation (d) magnetism
36. 36.⚖️ 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 same light (c) the same mirrors (d) the same carton
37. 37.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
38. 38.True or false: a balloon is needed for the periscope. (a) True (b) False
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) an empty juice carton (d) sticky tape
40. 40.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed

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