Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 730 · 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.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same glass
2. 2.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
3. 3.🥄 Which of these dissolves slower? (a) powdered sugar (b) a big sugar cube (c) sugar stirred well (d) sugar in warm water
4. 4.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
5. 5.🥄 Which of these dissolves in water? (a) cooking oil (b) sand (c) chalk powder (d) baking soda
6. 6.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
7. 7.💧 Which of these is evaporation? (a) wet clothes drying (b) butter going runny (c) ice becoming water (d) making ice lollies
8. 8.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) ice cubes (c) a magnet (d) water
9. 9.True or false: a paper helicopter falls slowly through the air. (a) True (b) False
10. 10.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when it turns blue (c) when the air runs out (d) it never stops
11. 11.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a vacuum cleaner (d) a magnetic chess set
14. 14.⚖️ 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
15. 15.True or false: a suction hook works by air pressure. (a) True (b) False
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False
18. 18.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
19. 19.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it sinks (d) it dissolves
20. 20.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
21. 21.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
22. 22.True or false: a ball of clay sinks in water. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a coin (b) a feather (c) a crumpled paper ball (d) a glass marble
24. 24.🔍 Which is the odd one out? (a) table salt (b) sand (c) glucose powder (d) sugar
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a sink or a bucket (d) a towel
26. 26.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it does not fall (c) it spins the other way (d) it falls upward
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the shape of the clay (d) the tub of water
29. 29.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
30. 30.🌈 How many colours do we name in a rainbow (VIBGYOR)?
31. 31.True or false: wet hair drying is melting. (a) True (b) False
32. 32.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a flower stem
33. 33.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) cooking oil (d) sugar
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) a battery cell
36. 36.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a strip of paper (c) safety scissors (d) a magnet
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
39. 39.💧 Which of these is melting? (a) ice becoming water (b) wet clothes drying (c) sweat drying on skin (d) making ice lollies
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) the same card (c) the way we turn it (d) how full the glass is

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