Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 839 · 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.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
2. 2.True or false: a mirror reflects light poorly. (a) True (b) False
3. 3.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a pencil (d) sticky tape
4. 4.True or false: aluminium foil reflects light poorly. (a) True (b) False
5. 5.True or false: dark soil reflects light poorly. (a) False (b) True
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) an empty juice carton (d) sticky tape
7. 7.True or false: yeast is needed for the periscope. (a) True (b) False
8. 8.⚖️ 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
9. 9.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
10. 10.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
11. 11.True or false: a rough wooden board reflects light well. (a) False (b) True
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is (d) the same light
13. 13.True or false: still clear water reflects light poorly. (a) True (b) False
14. 14.⚖️ 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) how clear the view is (c) the angle of the mirrors
15. 15.True or false: aluminium foil reflects light well. (a) True (b) False
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a pencil (d) a battery cell
18. 18.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for the periscope? (a) yeast (b) sticky tape (c) two small mirrors (d) an empty juice carton
20. 20.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) dark soil (d) a rough wooden board
21. 21.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) a battery cell (d) an empty juice carton
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a shiny steel plate (d) a rough wooden board
24. 24.⚖️ 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 keep it the same (b) we change it (c) we measure it
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
26. 26.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
27. 27.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) a shiny steel plate (d) aluminium foil
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) black cloth (d) dark soil
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a ruler (d) a magnet
31. 31.True or false: turmeric powder is needed for the periscope. (a) True (b) False
32. 32.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a balloon (d) two small mirrors
34. 34.🔭 Which of these reflects light well? (a) still clear water (b) a rough wooden board (c) a dull brick (d) dark soil
35. 35.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) vinegar (d) an empty juice carton
36. 36.True or false: a balloon is not needed for the periscope. (a) False (b) True
37. 37.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
38. 38.⚖️ 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
39. 39.True or false: yeast is not needed for the periscope. (a) True (b) False
40. 40.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up

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