Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 739 · 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.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) to make it heavy (d) so it can float
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) a magnet
3. 3.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
4. 4.True or false: dark soil reflects light well. (a) True (b) False
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) a dull brick
7. 7.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
8. 8.⚖️ 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
9. 9.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) vinegar (d) sticky tape
13. 13.🧺 Which of these is not needed for the periscope? (a) a magnet (b) sticky tape (c) a pencil (d) an empty juice carton
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
17. 17.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) still clear water (d) aluminium foil
18. 18.⚖️ 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 light
19. 19.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
21. 21.⚖️ 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 mirrors (c) how clear the view is (d) the angle of the mirrors
22. 22.True or false: a rough wooden board reflects light poorly. (a) False (b) True
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) an empty juice carton (c) a ruler (d) sticky tape
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
29. 29.⚖️ 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
30. 30.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
31. 31.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a pilot in a plane (d) a farmer
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) two small mirrors (c) a ruler (d) an empty juice carton
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick
36. 36.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) dark soil
37. 37.True or false: turmeric powder is needed for the periscope. (a) True (b) False
38. 38.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) a magnet (d) a battery cell
39. 39.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
40. 40.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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