Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 315 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) yeast (d) a towel
2. 2.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
3. 3.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) False (b) True
5. 5.True or false: a magnet is not needed for the paper helicopter. (a) True (b) False
6. 6.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it does not fall (c) it spins the other way (d) it turns blue
7. 7.⚖️ 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) the order of pouring (b) the order of the layers (c) the same three liquids
8. 8.🌈 In VIBGYOR, what number colour is green?
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a glass of water (d) a few hours of waiting
10. 10.🔍 Which is the odd one out? (a) a steel spoon (b) a fluff of cotton (c) a paper helicopter (d) a toy parachute
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
13. 13.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is the one thing we change. (a) False (b) True
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) whether it floats (c) the tub of water (d) the shape of the clay
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) time for colour to show (c) the amount of water (d) the amount of colour
17. 17.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a piece of chalk (d) a rubber eraser
18. 18.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
19. 19.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a fridge magnet (c) a balloon rocket (d) a mirror
20. 20.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
21. 21.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it dissolves (d) it can float
22. 22.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) table salt (d) baking soda
23. 23.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) a strip of paper (d) a magnet
24. 24.🥄 Which of these does not dissolve in water? (a) glucose powder (b) small pebbles (c) sugar (d) table salt
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the amount of water
26. 26.True or false: the swimmer goes backward. (a) True (b) False
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the same card
28. 28.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is what we measure. (a) False (b) True
29. 29.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a magnet
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a cotton thread (d) a plastic ruler
35. 35.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it melts (d) it sinks
36. 36.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the kind of sugar (c) the amount of water (d) the water temperature
38. 38.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) True (b) False
40. 40.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water

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