Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 198 · 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.True or false: a glass marble falls fast through the air. (a) False (b) True
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.💧 Which of these is freezing? (a) snow turning to water (b) making ice lollies (c) a puddle drying up (d) wet hair drying
4. 4.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) throw them away safely (d) keep them in your mouth
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
6. 6.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a glass marble (d) a piece of foil
8. 8.True or false: a magnet is needed for the density tower. (a) True (b) False
9. 9.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
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 same glass”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
12. 12.💧 Which change is this: sweat drying on skin? (a) freezing (b) condensation (c) melting (d) evaporation
13. 13.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) honey (b) cooking oil (c) a pebble (d) a coin
16. 16.💧 Which of these lets water climb up it? (a) a piece of foil (b) a paper towel (c) a glass marble (d) a steel spoon
17. 17.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) a balloon (c) cling film (d) water
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a towel for spills (d) a mirror
20. 20.🛟 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
21. 21.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) sawdust (d) table salt
22. 22.🧺 Do we need two clear glasses for the dissolving test? (a) needed (b) not needed
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
24. 24.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
25. 25.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
26. 26.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
27. 27.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) two clear glasses (c) cotton wool (d) honey
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) how big we blow it (c) the same straw (d) distance it travels
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a magnet (d) a towel
30. 30.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a magnet (d) a sunny window
31. 31.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
32. 32.🧺 Which of these is needed for the density tower? (a) a balloon (b) honey (c) turmeric powder (d) a mirror
33. 33.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
35. 35.🍯 Which of these is denser than water? (a) air (b) cooking oil (c) a ping-pong ball (d) very salty water
36. 36.🌊 What pushes a floating cork upward? (a) the water (b) the cork itself (c) the air above (d) the tub
37. 37.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
38. 38.⚖️ 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 same three liquids (b) the order of the layers (c) the order of pouring
39. 39.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a spoon (c) water with food colour (d) a balloon
40. 40.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the order of the layers (b) the same glass (c) how much of each liquid (d) the same three liquids

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