Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 487 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
2. 2.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) dark soil (d) aluminium foil
3. 3.True or false: a rough wooden board reflects light well. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) dark soil
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) sticky tape (d) a ruler
6. 6.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a pencil (d) a magnet
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) sticky tape (d) two small mirrors
11. 11.True or false: a mirror reflects light well. (a) False (b) True
12. 12.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
13. 13.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
14. 14.True or false: dark soil reflects light poorly. (a) True (b) False
15. 15.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) a ruler (d) yeast
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a balloon (d) an empty juice carton
18. 18.⚖️ 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 light (c) the angle of the mirrors
19. 19.True or false: black cloth reflects light well. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a dull brick (d) a shiny steel plate
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
22. 22.🔭 How many mirrors does a simple periscope use?
23. 23.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) a pencil (d) a ruler
24. 24.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
25. 25.True or false: a pencil is needed for the periscope. (a) False (b) True
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
28. 28.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
30. 30.⚖️ 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 object we look at (c) the angle of the mirrors
31. 31.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a mirror (d) a shiny steel plate
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.⚖️ 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
34. 34.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
35. 35.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) see over a wall (d) hear far sounds
36. 36.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same light (c) the same mirrors (d) the object we look at
38. 38.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) a shiny steel plate (d) still clear water
39. 39.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it looks shiny (d) so it can float
40. 40.⚖️ 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

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