Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 923 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
2. 2.True or false: a long string is needed for the balloon rocket. (a) False (b) True
3. 3.🥛 Which of these works by magnetism? (a) a drinking straw (b) a compass needle (c) a suction hook (d) a bicycle pump
4. 4.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar left unstirred (c) a big sugar cube (d) sugar in icy water
5. 5.True or false: honey is not needed for the density tower. (a) False (b) True
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a mirror (d) a balloon
10. 10.🚁 Which of these falls fast through the air? (a) a feather (b) a toy parachute (c) a steel spoon (d) a paper helicopter
11. 11.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) it stops in the air (c) faster (d) slower
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
13. 13.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
14. 14.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) bright sunlight (c) a clear glass of water (d) a sunny window
16. 16.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) water a swimmer pushes (d) the rocket
17. 17.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) water a swimmer pushes (d) the balloon
18. 18.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the time we wait (b) how many drops form (c) sun or shade (d) the amount of water
19. 19.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
20. 20.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) turmeric powder (d) a towel for spills
21. 21.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a flower stem
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is kept the same. (a) True (b) False
24. 24.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) how much of each liquid (b) the order of pouring (c) the order of the layers
25. 25.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
26. 26.True or false: sugar in icy water dissolves faster. (a) True (b) False
27. 27.True or false: honey is needed for the density tower. (a) False (b) True
28. 28.True or false: a plastic ruler lets water climb up it. (a) True (b) False
29. 29.🌈 How many colours do we name in a rainbow (VIBGYOR)?
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a battery cell (d) a few hours of waiting
31. 31.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
32. 32.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
33. 33.🧺 Which of these is not needed for the density tower? (a) honey (b) a balloon (c) water with food colour (d) a spoon
34. 34.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
35. 35.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
36. 36.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it turns blue (d) it floats higher
37. 37.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
38. 38.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
39. 39.True or false: a magnetic chess set works by air pressure. (a) True (b) False
40. 40.🥄 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water

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