Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 524 · 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.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) sugar (d) cooking oil
2. 2.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to salt (b) it turns to smoke (c) it disappears (d) it turns to drops
3. 3.True or false: a balloon is needed for the paper helicopter. (a) False (b) True
4. 4.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
5. 5.True or false: a ball of clay sinks in water. (a) True (b) False
6. 6.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a fridge magnet (d) a suction hook
7. 7.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
8. 8.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to splash everyone (d) to hide the corks
9. 9.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) water from the oars (d) the balloon
10. 10.🔍 Which is the odd one out? (a) air (b) a ping-pong ball (c) a cork (d) a coin
11. 11.🔍 Which is the odd one out? (a) a cork (b) a dry leaf (c) a metal key (d) a piece of thermocol
12. 12.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) taste each layer (d) pour it on the floor
13. 13.True or false: a glass marble is denser than water. (a) False (b) True
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) small test objects (d) a battery cell
16. 16.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a high window ledge (c) a wobbly chair (d) from your raised hand
17. 17.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) yeast (c) a magnet (d) ice cubes
18. 18.⚖️ 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 glass is kept the same. (a) False (b) True
19. 19.True or false: very salty water is denser than water. (a) False (b) True
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.True or false: baking soda dissolves in water. (a) True (b) False
22. 22.🧺 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) small test objects (d) yeast
23. 23.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a little shaking (c) a few ice cubes (d) more plain water
24. 24.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) water a swimmer pushes (d) the swimmer
25. 25.True or false: ice becoming water is evaporation. (a) False (b) True
26. 26.🚁 Which of these falls fast through the air? (a) a feather (b) a toy parachute (c) a fluff of cotton (d) a stone
27. 27.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a cotton thread (d) a steel spoon
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) an iron nail (c) a ping-pong ball (d) a coin
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) the order of pouring (c) how much of each liquid (d) the order of the layers
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a towel (d) a sink or a bucket
32. 32.True or false: a crumpled paper ball falls fast through the air. (a) False (b) True
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
34. 34.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) some water evaporates (c) the water increases (d) it turns to salt
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a glass of water
36. 36.🛟 Which of these floats on water? (a) an iron nail (b) a coin (c) a steel spoon (d) a dry leaf
37. 37.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a mirror
39. 39.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) water (c) a big bowl (d) ice cubes
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) cold water (c) two clear glasses (d) sugar

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