Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 861 · 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? What do we do with “how clear the view is”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) a balloon
3. 3.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a pilot in a plane (d) a farmer
4. 4.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
7. 7.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
8. 8.⚖️ 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 light (b) the same mirrors (c) the object we look at (d) the angle of the mirrors
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a rough wooden board (d) a shiny steel plate
11. 11.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a rough wooden board
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) vinegar (d) two small mirrors
14. 14.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) dark soil (d) black cloth
15. 15.⚖️ 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 measure it (b) we change it (c) we keep it the same
16. 16.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) a mirror
17. 17.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) a mirror (d) aluminium foil
18. 18.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for the periscope? (a) a ruler (b) turmeric powder (c) two small mirrors (d) sticky tape
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a ruler (d) yeast
22. 22.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
23. 23.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
27. 27.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) yeast (d) sticky tape
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) two small mirrors (d) sticky tape
31. 31.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) sticky tape (d) two small mirrors
32. 32.⚖️ 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) how clear the view is (c) the object we look at
33. 33.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so it can float (d) so light reaches the eye
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.True or false: a shiny steel plate reflects light well. (a) False (b) True
36. 36.🧺 Which of these is needed for the periscope? (a) a battery cell (b) an empty juice carton (c) turmeric powder (d) a balloon
37. 37.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
39. 39.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) black cloth (d) a rough wooden board
40. 40.True or false: a rough wooden board reflects light well. (a) False (b) True

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