Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 278 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a medicine dropper
3. 3.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it stays still in air (c) it spins round (d) it flies upward
4. 4.True or false: yeast is needed for the paper helicopter. (a) True (b) False
5. 5.True or false: a strip of paper is needed for the paper helicopter. (a) True (b) False
6. 6.True or false: a cork is denser than water. (a) True (b) False
7. 7.True or false: safety scissors is needed for the paper helicopter. (a) False (b) True
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a balloon (d) a battery cell
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ 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 measure it (b) we change it (c) we keep it the same
11. 11.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it dissolves (d) it floats
12. 12.True or false: sugar in warm water dissolves slower. (a) True (b) False
13. 13.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
14. 14.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
15. 15.True or false: a long string is needed for the balloon rocket. (a) True (b) False
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a magnet
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the coldest (c) it is the stickiest (d) it is the densest
19. 19.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
20. 20.🌈 In VIBGYOR, what number colour is yellow?
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) no change at all (d) more friction, less far
25. 25.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) all of it dissolves (b) the sugar turns to salt (c) the water turns solid (d) some stays undissolved
28. 28.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a battery cell (c) safety scissors (d) a strip of paper
29. 29.🍯 Which of these is less dense than water? (a) honey (b) a cork (c) a glass marble (d) very salty water
30. 30.🧺 Which of these is needed for the dissolving test? (a) cold water (b) a mirror (c) cotton wool (d) a magnet
31. 31.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
32. 32.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it does not fall (d) so it turns blue
33. 33.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a strip of paper (c) a paper clip (d) yeast
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the length of the blades (c) the drop height
35. 35.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) a mirror (d) a sunny window
36. 36.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a piece of chalk
37. 37.⚖️ 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
38. 38.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a suction hook
39. 39.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the kind of clay (c) whether it floats

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