Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 76 · 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: the same carton is kept the same. (a) False (b) True
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
3. 3.True or false: a rough wooden board reflects light well. (a) False (b) True
4. 4.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
6. 6.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) aluminium foil (d) still clear water
7. 7.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) turmeric powder (d) a ruler
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
9. 9.🔮 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
10. 10.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
11. 11.True or false: still clear water reflects light well. (a) False (b) True
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) vinegar (d) sticky tape
13. 13.⚖️ 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
14. 14.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
15. 15.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
16. 16.⚖️ 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 mirrors (b) how clear the view is (c) the object we look at (d) the angle of the mirrors
17. 17.True or false: a balloon is needed for the periscope. (a) True (b) False
18. 18.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a battery cell (c) yeast (d) turmeric powder
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the object we look at (c) the same light (d) how clear the view is
21. 21.⚖️ 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
22. 22.True or false: a dull brick reflects light well. (a) True (b) False
23. 23.True or false: still clear water reflects light poorly. (a) True (b) False
24. 24.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) so it can float (d) to make it heavy
25. 25.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) dark soil (d) a shiny steel plate
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) a ruler (d) a pencil
27. 27.True or false: a mirror reflects light well. (a) False (b) True
28. 28.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a balloon (d) sticky tape
29. 29.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil
30. 30.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
31. 31.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a pencil (d) a magnet
32. 32.🔭 How many mirrors does a simple periscope use?
33. 33.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) a magnet
34. 34.🔭 How many times does light bounce off a mirror in a simple periscope?
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.🧺 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 magnet
39. 39.🔭 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
40. 40.⚖️ 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) True (b) False

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