Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 370 · 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.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) still clear water (d) a shiny steel plate
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same mirrors (c) the angle of the mirrors (d) the object we look at
3. 3.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🔭 What does a periscope let you do? (a) see in the dark (b) see germs (c) hear far sounds (d) see over a wall
7. 7.🔭 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 can float (d) so it looks shiny
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) vinegar
9. 9.True or false: aluminium foil reflects light poorly. (a) True (b) False
10. 10.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.⚖️ 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) the angle of the mirrors (c) the same mirrors (d) how clear the view is
12. 12.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a dull brick (d) black cloth
13. 13.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a mirror
14. 14.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a shiny steel plate (d) a mirror
15. 15.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) a rough wooden board
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) yeast
17. 17.🛟 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
18. 18.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a rough wooden board (d) a dull brick
20. 20.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) yeast (d) a pencil
21. 21.True or false: black cloth reflects light poorly. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) black cloth (d) a rough wooden board
23. 23.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
24. 24.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
26. 26.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) turmeric powder (d) a battery cell
27. 27.True or false: two small mirrors is needed for the periscope. (a) True (b) False
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.⚖️ 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
30. 30.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
31. 31.True or false: a mirror reflects light well. (a) True (b) False
32. 32.True or false: dark soil reflects light well. (a) False (b) True
33. 33.True or false: aluminium foil reflects light well. (a) False (b) True
34. 34.⚖️ 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
35. 35.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) a rough wooden board (d) black cloth
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) a pencil (d) sticky tape
37. 37.🔭 How many mirrors does a simple periscope use?
38. 38.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) two small mirrors (c) sticky tape (d) a pencil
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
40. 40.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed

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