Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 121 · 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.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) still clear water (c) aluminium foil (d) a shiny steel plate
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
4. 4.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) two small mirrors (d) a ruler
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.🔮 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
8. 8.⚖️ 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 keep it the same (c) we change it
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) so it can float (d) to make it heavy
12. 12.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
14. 14.True or false: a battery cell is not needed for the periscope. (a) False (b) True
15. 15.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a magnet (d) two small mirrors
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) a ruler (d) sticky tape
19. 19.True or false: a pencil is needed for the periscope. (a) False (b) True
20. 20.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
21. 21.🧺 Which of these is needed for the periscope? (a) a ruler (b) a balloon (c) a battery cell (d) yeast
22. 22.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) a rough wooden board
23. 23.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) still clear water (d) aluminium foil
25. 25.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) dark soil (d) a dull brick
26. 26.⚖️ 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
27. 27.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) black cloth (d) aluminium foil
28. 28.⚖️ 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) how clear the view is (c) the same mirrors (d) the object we look at
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
30. 30.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) a pencil (d) a ruler
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the object we look at (c) the angle of the mirrors (d) how clear the view is
32. 32.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) black cloth
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) an empty juice carton (d) a ruler
37. 37.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.⚖️ 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) True (b) False
39. 39.True or false: a balloon is needed for the periscope. (a) True (b) False
40. 40.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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