Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 596 · 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: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
2. 2.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the water temperature (c) the stirring (d) time to dissolve
4. 4.True or false: a piece of foil lets water climb up it. (a) True (b) False
5. 5.⚖️ 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 the layers (b) the order of pouring (c) the same three liquids
6. 6.🍯 Which of these is denser than water? (a) air (b) very salty water (c) an ice cube (d) a ping-pong ball
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
8. 8.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
9. 9.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it turns into a ball (c) it flies upward (d) it stays still in air
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) yeast
11. 11.🚁 Which of these falls fast through the air? (a) a paper helicopter (b) a feather (c) a glass marble (d) a fluff of cotton
12. 12.🛟 Which of these sinks in water? (a) a steel spoon (b) a dry leaf (c) a piece of thermocol (d) an ice-cream stick
13. 13.📘 What is water vapour? (a) salty water (b) water as a gas (c) tiny ice cubes (d) a kind of smoke
14. 14.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the amount of sugar
15. 15.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) look for leftover grains (d) taste it
16. 16.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is the one thing we change. (a) True (b) False
18. 18.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is hot (c) oil is heavier (d) oil is less dense
19. 19.🔍 Which is the odd one out? (a) a pebble (b) a coin (c) honey (d) air
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the amount of water (c) time for colour to show
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
22. 22.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to weigh down the bottom (b) to make it fall slower (c) to stop the spinning (d) to make it magnetic
23. 23.🧺 Do we need a ruler for the paper helicopter? (a) not needed (b) needed
24. 24.🧺 Which of these is needed for the density tower? (a) a spoon (b) yeast (c) a mirror (d) turmeric powder
25. 25.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) ice cubes (c) a small cup (d) a battery cell
27. 27.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the amount of water (b) sun or shade (c) the time we wait (d) how many drops form
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.💧 Which of these is freezing? (a) ice becoming water (b) drops under a pot lid (c) a pond icing over (d) wet clothes drying
30. 30.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) a big sugar cube
31. 31.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
33. 33.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
35. 35.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
36. 36.True or false: a pebble is less dense than water. (a) True (b) False
37. 37.True or false: a bicycle pump works by magnetism. (a) True (b) False
38. 38.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) a few ice cubes (d) lots of salt stirred in
39. 39.True or false: sugar dissolves in water. (a) True (b) False
40. 40.🔮 Predict: you fold the two blades the other way. What changes? (a) it does not fall (b) it turns blue (c) it falls upward (d) it spins the other way

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