Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 973 · 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? Which of these is the one thing we change? (a) how clear the view is (b) the same light (c) the same carton (d) the angle of the mirrors
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
3. 3.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a balloon (d) an empty juice carton
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) sticky tape (d) a balloon
5. 5.True or false: a mirror reflects light well. (a) False (b) True
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a battery cell
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.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.⚖️ 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 same mirrors (c) how clear the view is
14. 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
15. 15.⚖️ 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
16. 16.🔭 How many mirrors does a simple periscope use?
17. 17.True or false: a magnet is not needed for the periscope. (a) True (b) False
18. 18.True or false: a balloon is needed for the periscope. (a) True (b) False
19. 19.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
20. 20.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
21. 21.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a farmer (d) a submarine crew
22. 22.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) so it can float (d) to make it heavy
23. 23.True or false: a rough wooden board reflects light poorly. (a) True (b) False
24. 24.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a shiny steel plate
25. 25.True or false: yeast is not needed for the periscope. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) aluminium foil
27. 27.True or false: still clear water reflects light poorly. (a) True (b) False
28. 28.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
29. 29.True or false: dark soil reflects light poorly. (a) True (b) False
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) a ruler (d) two small mirrors
34. 34.True or false: aluminium foil reflects light poorly. (a) False (b) True
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
36. 36.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
37. 37.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
38. 38.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) sticky tape (d) two small mirrors
39. 39.True or false: sticky tape is not needed for the periscope. (a) False (b) True
40. 40.⚖️ 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

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