Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 906 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a mirror (d) aluminium foil
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) a ruler
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) turmeric powder (d) a ruler
6. 6.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
9. 9.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) a dull brick
10. 10.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
12. 12.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
13. 13.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) a mirror (d) still clear water
14. 14.⚖️ 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 carton (b) the same mirrors (c) the object we look at (d) the angle of the mirrors
15. 15.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.⚖️ 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
17. 17.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
18. 18.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a mirror (d) still clear water
19. 19.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
20. 20.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.True or false: vinegar is needed for the periscope. (a) False (b) True
22. 22.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a shiny steel plate (d) dark soil
23. 23.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) yeast (c) an empty juice carton (d) sticky tape
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) two small mirrors (d) a pencil
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 change it (b) we measure it (c) we keep it the same
26. 26.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it looks shiny (d) so it can float
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) two small mirrors (d) vinegar
29. 29.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) sticky tape (d) a balloon
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) a ruler (d) two small mirrors
31. 31.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
34. 34.True or false: a rough wooden board reflects light poorly. (a) False (b) True
35. 35.⚖️ 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
36. 36.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
37. 37.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) turmeric powder (d) two small mirrors
38. 38.🧺 Which of these is needed for the periscope? (a) a pencil (b) vinegar (c) a battery cell (d) a magnet
39. 39.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a battery cell (d) an empty juice carton
40. 40.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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