Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 656 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) yeast (d) sticky tape
2. 2.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) still clear water
3. 3.True or false: yeast is needed for the periscope. (a) True (b) False
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) turmeric powder
5. 5.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) sticky tape (d) a pencil
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
9. 9.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) aluminium foil (d) black cloth
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a dull brick
12. 12.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a shiny steel plate (d) still clear water
13. 13.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a pilot in a plane (d) a baker
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it can float (d) so it looks shiny
17. 17.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
18. 18.⚖️ 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 same light
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a balloon (d) a pencil
20. 20.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) a pencil (d) sticky tape
21. 21.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) two small mirrors (d) turmeric powder
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
23. 23.True or false: a rough wooden board reflects light poorly. (a) True (b) False
24. 24.⚖️ 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 mirrors (b) how clear the view is (c) the same light (d) the angle of the mirrors
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.True or false: dark soil reflects light well. (a) False (b) True
27. 27.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
28. 28.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) still clear water (d) a rough wooden board
30. 30.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) dark soil
31. 31.True or false: a magnet is needed for the periscope. (a) True (b) False
32. 32.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
33. 33.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
34. 34.True or false: a shiny steel plate reflects light well. (a) False (b) True
35. 35.⚖️ 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
36. 36.True or false: a pencil is not needed for the periscope. (a) True (b) False
37. 37.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
38. 38.🔮 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
39. 39.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) sticky tape (c) an empty juice carton (d) two small mirrors
40. 40.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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