Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 882 · 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.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it floats up (c) faster (d) it stops in the air
2. 2.True or false: sugar does not dissolve in water. (a) True (b) False
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a white flower (d) a few hours of waiting
4. 4.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) cold water is wet (d) particles move faster
5. 5.True or false: a coin floats on water. (a) True (b) False
6. 6.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) look for leftover grains (c) taste it (d) poke it with a finger
7. 7.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it sinks (d) it turns blue
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.💧 Which change is this: a puddle drying up? (a) condensation (b) melting (c) evaporation (d) freezing
10. 10.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) a clock or timer (c) cold water (d) sugar
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a sink or a bucket (d) yeast
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.🧺 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) yeast (d) a tub of water
14. 14.🌈 In VIBGYOR, what number colour is yellow?
15. 15.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the kind of flower (b) time for colour to show (c) the length of the stem
17. 17.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a few hours of waiting (d) turmeric powder
21. 21.True or false: a suction hook works by magnetism. (a) True (b) False
22. 22.True or false: a mirror is needed for the density tower. (a) False (b) True
23. 23.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same glass (b) how much of each liquid (c) the order of pouring (d) the order of the layers
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🔍 Which is the odd one out? (a) an iron nail (b) a steel spoon (c) a metal key (d) an ice-cream stick
26. 26.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) a balloon (d) water with food colour
27. 27.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same glass (b) whether the card stays (c) how full the glass is (d) the same card
30. 30.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
31. 31.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
32. 32.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is what we measure. (a) True (b) False
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) honey (d) turmeric powder
35. 35.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) False (b) True
37. 37.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
38. 38.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a vacuum cleaner
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the amount of water (c) the size of the bowl (d) the cling film cover
40. 40.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a balloon rocket (d) a mirror

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