Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 841 · 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.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it sinks (c) it floats higher (d) it melts
3. 3.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
4. 4.🥄 Which of these dissolves in water? (a) small pebbles (b) food colour (c) cooking oil (d) sand
5. 5.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
8. 8.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card stays on (c) the card flies away (d) the glass breaks
9. 9.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) under the honey (c) in the honey layer (d) on top of the oil
10. 10.⚖️ 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
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ 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
13. 13.🌈 In VIBGYOR, what number colour is violet?
14. 14.💧 Which of these does not let water climb? (a) a piece of chalk (b) a rubber eraser (c) a sugar cube (d) a flower stem
15. 15.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
16. 16.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
17. 17.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) throw the glass (c) taste each layer (d) do not lick the spoon
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) a glass of water (d) a battery cell
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) True (b) False
22. 22.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) sugar (c) a clock or timer (d) a teaspoon
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it through glass (d) look at it in a mirror
24. 24.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
25. 25.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
26. 26.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the order of pouring (c) the same glass (d) the same three liquids
27. 27.⚖️ 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) the same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
28. 28.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) yeast (d) a sink or a bucket
30. 30.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a balloon (c) a tub of water (d) small test objects
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
32. 32.⚖️ 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 the one thing we change. (a) True (b) False
33. 33.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
34. 34.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
35. 35.💧 Which of these is freezing? (a) water becoming ice (b) drops on a cold glass (c) snow turning to water (d) ice becoming water
36. 36.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) not at all (c) the same (d) faster
37. 37.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
38. 38.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) cold water is wet (c) particles move faster (d) sugar likes the dark
39. 39.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
40. 40.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a magnet (d) a clear glass of water

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