Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 949 · 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 needed for the periscope? (a) turmeric powder (b) a balloon (c) sticky tape (d) yeast
2. 2.🧺 Which of these is not needed for the periscope? (a) a pencil (b) turmeric powder (c) sticky tape (d) an empty juice carton
3. 3.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) still clear water (d) a rough wooden board
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
6. 6.🧺 Which of these is needed for the periscope? (a) vinegar (b) two small mirrors (c) yeast (d) a battery cell
7. 7.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) a mirror (d) a shiny steel plate
8. 8.True or false: a battery cell is not needed for the periscope. (a) False (b) True
9. 9.⚖️ 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
10. 10.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) yeast (d) sticky tape
12. 12.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) a balloon (d) yeast
13. 13.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
14. 14.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) aluminium foil
15. 15.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
17. 17.⚖️ 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 angle of the mirrors (c) the same carton
18. 18.⚖️ 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
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.⚖️ 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
21. 21.🔮 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
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.⚖️ 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 carton (c) the angle of the mirrors (d) the same light
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) vinegar (d) two small mirrors
26. 26.⚖️ 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) True (b) False
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) aluminium foil (c) a rough wooden board (d) dark soil
28. 28.True or false: turmeric powder is needed for the periscope. (a) True (b) False
29. 29.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
30. 30.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
31. 31.True or false: black cloth reflects light well. (a) True (b) False
32. 32.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) still clear water (d) black cloth
33. 33.True or false: a magnet is needed for the periscope. (a) False (b) True
34. 34.⚖️ 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) how clear the view is (d) the same mirrors
35. 35.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
36. 36.True or false: a balloon is not needed for the periscope. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) dark soil (d) still clear water
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) an empty juice carton (d) a ruler
39. 39.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🧺 Which of these is needed for the periscope? (a) yeast (b) a pencil (c) a magnet (d) a balloon

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