Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 546 · 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 “the angle of the mirrors”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
3. 3.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
4. 4.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
9. 9.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) still clear water
10. 10.⚖️ 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 same light (c) the same mirrors (d) the angle of the mirrors
11. 11.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
14. 14.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a magnet (d) an empty juice carton
16. 16.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
17. 17.True or false: a ruler is not needed for the periscope. (a) True (b) False
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) sticky tape (d) an empty juice carton
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
22. 22.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
25. 25.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
26. 26.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
27. 27.True or false: a rough wooden board reflects light well. (a) False (b) True
28. 28.🧺 Which of these is needed for the periscope? (a) a battery cell (b) an empty juice carton (c) vinegar (d) a magnet
29. 29.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a rough wooden board (d) dark soil
31. 31.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
32. 32.True or false: a ruler is needed for the periscope. (a) True (b) False
33. 33.⚖️ 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
34. 34.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.True or false: a pencil is needed for the periscope. (a) True (b) False
37. 37.True or false: a battery cell is needed for the periscope. (a) True (b) False
38. 38.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) a magnet (d) two small mirrors
39. 39.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a rough wooden board (d) a shiny steel plate
40. 40.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a balloon (d) a pencil

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