Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 955 · 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 object we look at”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: turmeric powder is needed for the periscope. (a) False (b) True
3. 3.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a rough wooden board
4. 4.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
5. 5.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
6. 6.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) black cloth (d) a shiny steel plate
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a magnet (d) sticky tape
9. 9.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) aluminium foil (d) still clear water
10. 10.🧺 Which of these is needed for the periscope? (a) a ruler (b) yeast (c) a balloon (d) turmeric powder
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
13. 13.True or false: a pencil is not needed for the periscope. (a) True (b) False
14. 14.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
15. 15.True or false: a mirror reflects light poorly. (a) True (b) False
16. 16.True or false: a rough wooden board reflects light poorly. (a) False (b) True
17. 17.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) a magnet
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
19. 19.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
21. 21.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) a rough wooden board
22. 22.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) an empty juice carton (d) vinegar
23. 23.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) turmeric powder (d) two small mirrors
26. 26.True or false: a dull brick reflects light poorly. (a) False (b) True
27. 27.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
28. 28.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
29. 29.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a pencil (d) a battery cell
30. 30.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
31. 31.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
32. 32.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
33. 33.True or false: a dull brick reflects light well. (a) False (b) True
34. 34.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
35. 35.True or false: a shiny steel plate reflects light well. (a) False (b) True
36. 36.True or false: a ruler is not needed for the periscope. (a) True (b) False
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
38. 38.True or false: aluminium foil reflects light poorly. (a) False (b) True
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids