Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 812 · 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.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water is heavy (c) hot water can scald (d) it changes colour
2. 2.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) air from the balloon (d) the rowing boat
3. 3.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same glass (b) brightness of rainbow (c) the amount of water
5. 5.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) whether it floats (c) the shape of the clay
7. 7.🔍 Which is the odd one out? (a) a feather (b) a dry leaf (c) a ping-pong ball (d) a metal key
8. 8.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🛟 Which of these floats on water? (a) an iron nail (b) a piece of thermocol (c) a ball of clay (d) a glass marble
10. 10.🥄 Which of these does not dissolve in water? (a) cooking oil (b) food colour (c) sugar (d) glucose powder
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) how full the glass is (b) the same card (c) the way we turn it (d) the same glass
12. 12.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a wobbly chair (c) a roof edge (d) from your raised hand
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🔍 Which is the odd one out? (a) a pond icing over (b) making ice lollies (c) a misty bathroom mirror (d) water becoming ice
15. 15.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the tub of water (c) the shape of the clay (d) the kind of clay
18. 18.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
19. 19.🚁 Why does the paper helicopter fall slowly? (a) air pushes on its blades (b) a magnet holds it (c) the floor pushes it (d) it has no weight
20. 20.🛟 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
21. 21.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) turmeric powder (c) a mirror (d) cling film
22. 22.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🛟 Which scissors should children use to cut the paper? (a) safety scissors (b) a paper cutter (c) gardening shears (d) sharp kitchen shears
24. 24.🧺 Which of these is needed for the paper helicopter? (a) a ruler (b) a balloon (c) a battery cell (d) yeast
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the kind of flower (c) the amount of colour (d) the length of the stem
26. 26.True or false: the balloon goes forward. (a) True (b) False
27. 27.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar in warm water (c) sugar left unstirred (d) a big sugar cube
28. 28.True or false: drops under a pot lid is condensation. (a) False (b) True
29. 29.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the amount of clay
31. 31.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
32. 32.⚖️ 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 pouring is the one thing we change. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) turmeric powder (d) a few hours of waiting
35. 35.True or false: cold water is needed for the dissolving test. (a) True (b) False
36. 36.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they turn to honey (c) they mix for ever (d) they become solid
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a magnet (d) a sunny window
38. 38.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
39. 39.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) a big sugar cube
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) yeast

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