Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 892 · 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 of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) yeast (d) a balloon
2. 2.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a drinking straw (d) a bicycle pump
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a towel (d) a sink or a bucket
4. 4.True or false: a glass marble falls fast through the air. (a) False (b) True
5. 5.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to weigh down the bottom (b) to make it magnetic (c) to make it fall slower (d) to stop the spinning
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) True (b) False
7. 7.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) a paper cutter (d) gardening shears
8. 8.⚖️ 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 the one thing we change. (a) True (b) False
9. 9.🥄 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) from your raised hand (c) a high window ledge (d) a roof edge
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) False (b) True
12. 12.🛟 Which of these floats on water? (a) an iron nail (b) a coin (c) a metal key (d) a feather
13. 13.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
14. 14.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
15. 15.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
16. 16.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an iron nail (c) an ice-cream stick (d) a feather
17. 17.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) two clear glasses (c) a comb (d) a clock or timer
18. 18.True or false: ice cubes is needed for the water cycle bowl. (a) True (b) False
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) the shape of the clay (c) whether it floats (d) the tub of water
20. 20.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a tall clear glass (c) a balloon (d) water with food colour
21. 21.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) leave them wet (c) slide on them (d) wipe them dry
22. 22.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) it has a magnet (d) sea water is warm
23. 23.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of water
25. 25.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) air from the balloon (d) the balloon
26. 26.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
27. 27.True or false: a mirror is needed for the paper helicopter. (a) True (b) False
28. 28.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
29. 29.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is heavy (c) it changes colour (d) hot water is magnetic
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
35. 35.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) do not lick the spoon (c) pour it on the floor (d) taste each layer
36. 36.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) yeast (c) ice cubes (d) a mirror
37. 37.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) a ruler (d) a magnet
38. 38.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
39. 39.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a magnet (d) a balloon

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