Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 954 · 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.True or false: black cloth reflects light poorly. (a) True (b) False
2. 2.True or false: a ruler is not needed for the periscope. (a) False (b) True
3. 3.⚖️ 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) False (b) True
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) a brighter view (d) two pictures
5. 5.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
6. 6.True or false: aluminium foil reflects light well. (a) False (b) True
7. 7.⚖️ 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) False (b) True
8. 8.🔭 Does dark soil 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 same carton”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a dull brick (d) a shiny steel plate
11. 11.🔭 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
12. 12.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) still clear water
13. 13.🛟 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
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) aluminium foil
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) a ruler (d) sticky tape
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
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? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) much bigger (d) in colour
21. 21.🔭 How many mirrors does a simple periscope use?
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a ruler (d) a magnet
23. 23.True or false: a pencil is needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
25. 25.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) black cloth (d) a shiny steel plate
26. 26.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) a mirror
27. 27.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a battery cell
28. 28.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a shiny steel plate (d) black cloth
29. 29.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
31. 31.True or false: vinegar is not needed for the periscope. (a) False (b) True
32. 32.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) vinegar (d) turmeric powder
33. 33.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
34. 34.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
35. 35.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) still clear water
36. 36.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
39. 39.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) sticky tape (d) a balloon
40. 40.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil

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