Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 837 · 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.⚖️ 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 amount of clay (b) whether it floats (c) the tub of water (d) the shape of the clay
2. 2.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
3. 3.🔍 Which is the odd one out? (a) an iron nail (b) a ball of clay (c) a pebble (d) an ice-cream stick
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
5. 5.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny drops of water (d) tiny bits of dust
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
7. 7.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is magnetic (d) ice is less dense
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) time to reach the floor (c) the length of the blades (d) the paper clip
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a tall clear glass (c) a balloon (d) honey
13. 13.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a mirror (c) a balloon (d) sugar
14. 14.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
15. 15.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a cork (c) a glass marble (d) a feather
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) the same window (c) the amount of water (d) brightness of rainbow
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a mirror (d) yeast
18. 18.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a stone (b) a coin (c) a paper helicopter (d) a crumpled paper ball
20. 20.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar stirred well
21. 21.🧺 Which of these is needed for the dissolving test? (a) a teaspoon (b) a mirror (c) a comb (d) cotton wool
22. 22.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a magnet (d) a stiff postcard
24. 24.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a sink or a bucket (d) yeast
26. 26.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) they never dry (c) slower (d) faster
27. 27.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) coloured water (c) cooking oil (d) the spoon
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) False (b) True
29. 29.⚖️ 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 amount of water (b) the kind of flower (c) the length of the stem (d) time for colour to show
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a balloon
31. 31.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a results table (d) a balloon
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the time we wait (b) sun or shade (c) how many drops form (d) the cling film cover
34. 34.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) cotton wool (c) a clock or timer (d) a teaspoon
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) yeast (d) cooking oil
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
37. 37.⚖️ 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 window (b) brightness of rainbow (c) the amount of water
38. 38.⚖️ 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 room it stands in (b) the length of the stem (c) the kind of flower (d) time for colour to show
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) True (b) False
40. 40.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) slower (d) faster

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