Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 466 · 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.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it sinks (c) it melts (d) it floats higher
2. 2.🧊 Why does an ice cube float on water? (a) ice is very cold (b) water is sticky (c) ice is less dense (d) ice is magnetic
3. 3.🌈 In VIBGYOR, what number colour is orange?
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) a results table (d) turmeric powder
5. 5.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.True or false: a spoon is needed for the density tower. (a) True (b) False
7. 7.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil turns into honey (d) oil makes it rain
8. 8.True or false: a comb is needed for the dissolving test. (a) True (b) False
9. 9.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a balloon (c) yeast (d) honey
10. 10.🧺 Which of these is needed for the density tower? (a) yeast (b) a battery cell (c) a magnet (d) a spoon
11. 11.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) the time we wait (c) sun or shade
12. 12.True or false: the balloon goes backward. (a) True (b) False
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
14. 14.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
15. 15.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a results table (d) turmeric powder
17. 17.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) cooking oil (c) a spoon (d) turmeric powder
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
19. 19.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a balloon rocket (d) a fridge magnet
20. 20.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a battery cell
22. 22.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels farther (c) it goes backward first (d) it travels less far
23. 23.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) turmeric powder (c) a balloon (d) a tub of water
24. 24.🧺 Which of these is needed for the density tower? (a) a balloon (b) yeast (c) a magnet (d) a tall clear glass
25. 25.📘 What is the push of air on a falling thing called? (a) magnetism (b) floating (c) dissolving (d) air resistance
26. 26.🔍 Which is the odd one out? (a) an open sheet of paper (b) a fluff of cotton (c) a toy parachute (d) a crumpled paper ball
27. 27.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) sawdust (d) baking soda
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
29. 29.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) water with food colour (c) a spoon (d) cooking oil
30. 30.True or false: a clock or timer is not needed for the dissolving test. (a) False (b) True
31. 31.True or false: sugar in warm water dissolves slower. (a) False (b) True
32. 32.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
33. 33.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🌈 How many colours do we name in a rainbow (VIBGYOR)?
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
36. 36.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) turmeric powder (d) two chairs
37. 37.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.💧 Which change is this: a pond icing over? (a) freezing (b) evaporation (c) condensation (d) melting
40. 40.True or false: a big sugar cube dissolves slower. (a) True (b) False

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