Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 511 · 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.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
2. 2.⚖️ 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) how clear the view is (c) the object we look at (d) the same carton
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so light reaches the eye (d) so it looks shiny
4. 4.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
5. 5.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) a dull brick (d) dark soil
6. 6.True or false: a mirror reflects light poorly. (a) True (b) False
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🛟 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
9. 9.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) black cloth (d) aluminium foil
10. 10.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.True or false: yeast is needed for the periscope. (a) True (b) False
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a pencil (d) a ruler
14. 14.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a ruler (c) a pencil (d) two small mirrors
15. 15.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
16. 16.True or false: vinegar is not needed for the periscope. (a) False (b) True
17. 17.True or false: black cloth reflects light poorly. (a) False (b) True
18. 18.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
20. 20.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
21. 21.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
22. 22.⚖️ 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 angle of the mirrors (c) the object we look at (d) the same mirrors
23. 23.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a rough wooden board (c) a mirror (d) still clear water
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) two small mirrors (d) a ruler
25. 25.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) sticky tape (d) vinegar
26. 26.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
27. 27.⚖️ 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
28. 28.True or false: dark soil reflects light poorly. (a) True (b) False
29. 29.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
31. 31.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) a ruler (d) a balloon
32. 32.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
33. 33.True or false: still clear water reflects light well. (a) False (b) True
34. 34.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a ruler (d) vinegar
35. 35.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
36. 36.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
37. 37.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a mirror
38. 38.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) yeast (d) a magnet
39. 39.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
40. 40.True or false: a balloon is needed for the periscope. (a) True (b) False

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