Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 149 · 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.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
4. 4.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
6. 6.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
7. 7.⚖️ 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 carton (c) the same mirrors (d) the angle of the mirrors
8. 8.True or false: a balloon is needed for the periscope. (a) True (b) False
9. 9.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) two small mirrors (d) a battery cell
12. 12.True or false: a mirror reflects light well. (a) True (b) False
13. 13.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
14. 14.⚖️ 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
15. 15.True or false: a rough wooden board reflects light poorly. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) dark soil (d) a rough wooden board
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) an empty juice carton (d) yeast
18. 18.⚖️ 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 change it (b) we keep it the same (c) we measure it
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a ruler (d) a pencil
20. 20.True or false: a magnet is not needed for the periscope. (a) True (b) False
21. 21.True or false: turmeric powder is needed for the periscope. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) black cloth
23. 23.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
24. 24.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
27. 27.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
28. 28.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
30. 30.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
31. 31.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
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) the same mirrors (c) how clear the view is
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
34. 34.True or false: aluminium foil reflects light well. (a) False (b) True
35. 35.🧺 Which of these is needed for the periscope? (a) a magnet (b) a ruler (c) a balloon (d) turmeric powder
36. 36.⚖️ 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) the object we look at (c) how clear the view is
37. 37.🔭 How many times does light bounce off a mirror in a simple periscope?
38. 38.True or false: a mirror reflects light poorly. (a) True (b) False
39. 39.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a rough wooden board (c) a shiny steel plate (d) still clear water
40. 40.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds

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