Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 382 · 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: food colour is not needed for the coloured flower experiment. (a) False (b) True
2. 2.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a mirror (c) a towel for spills (d) a magnet
3. 3.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
4. 4.🧺 Which of these is not needed for the density tower? (a) honey (b) water with food colour (c) yeast (d) cooking oil
5. 5.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) taste it (c) look for leftover grains (d) poke it with a finger
6. 6.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) powdered sugar (d) neither of them
7. 7.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) yeast (c) a strip of paper (d) a pencil
8. 8.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
9. 9.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a white flower (d) a magnet
11. 11.True or false: sweat drying on skin is condensation. (a) True (b) False
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
13. 13.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) pour it on the floor (d) throw the glass
14. 14.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a mirror (d) a glass of water
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) the length of the stem (c) the amount of water (d) time for colour to show
17. 17.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
18. 18.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) sugar (c) cotton wool (d) a teaspoon
19. 19.🛟 Which of these sinks in water? (a) a cork (b) an ice cube (c) a feather (d) a steel spoon
20. 20.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) rain (b) sunshine (c) lightning (d) wind
21. 21.🔍 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
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
23. 23.⚖️ 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
24. 24.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a crumpled paper ball (c) a toy parachute (d) a stone
25. 25.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) True (b) False
26. 26.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a stiff postcard (d) a towel
28. 28.True or false: a fridge magnet works by magnetism. (a) False (b) True
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) yeast (d) a tub of water
30. 30.🍯 Which of these is denser than water? (a) air (b) a ping-pong ball (c) cooking oil (d) very salty water
31. 31.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
32. 32.True or false: a paper clip is not needed for the paper helicopter. (a) False (b) True
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a battery cell (d) a glass of water
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same straw
37. 37.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) yeast (c) sunlight (d) water
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a results table (d) a battery cell
39. 39.⚖️ 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 keep it the same (b) we change it (c) we measure it
40. 40.True or false: a suction hook works by air pressure. (a) True (b) False

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