Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 952 · 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.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) water (c) sunlight (d) a battery cell
2. 2.🍯 Which of these is less dense than water? (a) a ping-pong ball (b) a coin (c) a pebble (d) honey
3. 3.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a balloon
5. 5.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) magnets (d) balloons
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) turmeric powder (c) a big bowl (d) a magnet
7. 7.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
8. 8.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) not at all (c) faster (d) the same
9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a sheet of white paper (d) a sunny window
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
13. 13.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.True or false: a steel spoon floats on water. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) sugar (d) glucose powder
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
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: how much of each liquid is kept the same. (a) False (b) True
19. 19.True or false: a glass marble lets water climb up it. (a) False (b) True
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
21. 21.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) yeast (c) turmeric powder (d) two chairs
22. 22.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a compass needle
23. 23.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
24. 24.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the oil layer (c) in the water layer (d) at the very bottom
25. 25.True or false: a battery cell is needed for the paper helicopter. (a) False (b) True
26. 26.True or false: a balloon is needed for the water cycle bowl. (a) True (b) False
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) turmeric powder
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a balloon (b) sugar (c) a clock or timer (d) warm water
30. 30.🛟 Which of these floats on water? (a) a ping-pong ball (b) a glass marble (c) a ball of clay (d) a pebble
31. 31.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
32. 32.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
33. 33.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it spins the other way (c) it turns blue (d) it does not fall
34. 34.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) spilled oil is slippery (d) oil makes it rain
35. 35.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
36. 36.🚁 What does the paper helicopter do as it falls? (a) it flies upward (b) it spins round (c) it stays still in air (d) it turns into a ball
37. 37.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a glass marble (d) a piece of foil
38. 38.True or false: drops under a pot lid is evaporation. (a) False (b) True
39. 39.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
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 kept the same? (a) the order of the layers (b) the order of pouring (c) the same three liquids

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