Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 118 · 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.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) dark soil
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the angle of the mirrors (c) the same carton (d) how clear the view is
5. 5.🧺 Which of these is not needed for the periscope? (a) a pencil (b) yeast (c) an empty juice carton (d) two small mirrors
6. 6.⚖️ 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 measure it (c) we keep it the same
7. 7.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) black cloth
8. 8.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
9. 9.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
11. 11.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a shiny steel plate (d) a mirror
12. 12.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
13. 13.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a magnet (d) a pencil
14. 14.True or false: vinegar is not needed for the periscope. (a) False (b) True
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
18. 18.True or false: a battery cell is needed for the periscope. (a) False (b) True
19. 19.🧺 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) two small mirrors
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
23. 23.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
24. 24.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
25. 25.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) aluminium foil
26. 26.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.True or false: a pencil is needed for the periscope. (a) True (b) False
29. 29.True or false: two small mirrors is needed for the periscope. (a) True (b) False
30. 30.⚖️ 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
31. 31.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
32. 32.🔭 Which of these reflects light poorly? (a) aluminium foil (b) dark soil (c) a mirror (d) still clear water
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same light (c) the angle of the mirrors (d) how clear the view is
36. 36.True or false: a ruler is needed for the periscope. (a) False (b) True
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a magnet (d) an empty juice carton
38. 38.True or false: turmeric powder is needed for the periscope. (a) False (b) True
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) an empty juice carton (d) sticky tape
40. 40.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun

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