Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 150 · 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.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) a shiny steel plate
2. 2.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
3. 3.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) an empty juice carton (d) a balloon
4. 4.True or false: yeast is not needed for the periscope. (a) True (b) False
5. 5.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) an empty juice carton (d) yeast
6. 6.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
7. 7.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) a battery cell (d) a balloon
8. 8.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) dark soil (d) a dull brick
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) vinegar (d) a pencil
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) a dull brick
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.⚖️ 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 same mirrors (c) the angle of the mirrors
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a pencil (d) sticky tape
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the object we look at (d) the same carton
17. 17.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
18. 18.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
19. 19.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) aluminium foil (d) still clear water
20. 20.True or false: aluminium foil reflects light poorly. (a) False (b) True
21. 21.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
22. 22.True or false: a mirror reflects light well. (a) False (b) True
23. 23.True or false: a dull brick reflects light poorly. (a) False (b) True
24. 24.⚖️ 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
25. 25.⚖️ 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 keep it the same (b) we measure it (c) we change it
26. 26.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
27. 27.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) an empty juice carton (d) two small mirrors
29. 29.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) a ruler (d) an empty juice carton
31. 31.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
33. 33.True or false: still clear water reflects light poorly. (a) False (b) True
34. 34.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) sticky tape (d) a ruler
36. 36.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) a mirror (d) a shiny steel plate
37. 37.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
38. 38.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
40. 40.True or false: a battery cell is not needed for the periscope. (a) True (b) False

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