Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 123 · 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 dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.⚖️ 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) how clear the view is (c) the object we look at (d) the angle of the mirrors
5. 5.True or false: dark soil reflects light poorly. (a) False (b) True
6. 6.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🔮 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
9. 9.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) still clear water (d) aluminium foil
10. 10.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a dull brick (d) black cloth
11. 11.⚖️ 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) False (b) True
12. 12.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a mirror (d) a rough wooden board
13. 13.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) aluminium foil
14. 14.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) yeast (d) an empty juice carton
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a battery cell (d) sticky tape
16. 16.True or false: two small mirrors is needed for the periscope. (a) False (b) True
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the object we look at (c) how clear the view is
19. 19.True or false: sticky tape is not needed for the periscope. (a) True (b) False
20. 20.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) still clear water (d) a shiny steel plate
21. 21.True or false: turmeric powder is needed for the periscope. (a) True (b) False
22. 22.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
23. 23.🔭 Which of these reflects light well? (a) still clear water (b) a rough wooden board (c) black cloth (d) dark soil
24. 24.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
25. 25.🛟 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
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
27. 27.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
28. 28.True or false: yeast is not needed for the periscope. (a) True (b) False
29. 29.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) sticky tape (d) yeast
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.True or false: a mirror reflects light poorly. (a) True (b) False
32. 32.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) dark soil (d) a shiny steel plate
34. 34.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) black cloth (d) a rough wooden board
35. 35.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so it looks shiny (d) so light reaches the eye
37. 37.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
38. 38.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
39. 39.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False

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