Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 958 · 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 — 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) the same glass (b) the order of the layers (c) the order of pouring (d) how much of each liquid
2. 2.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a drinking straw (d) a vacuum cleaner
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) bright sunlight (d) a sunny window
5. 5.True or false: the swimmer goes forward. (a) False (b) True
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the size of the bowl (c) how many drops form
8. 8.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
9. 9.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) the cold water (d) air pushing up
10. 10.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
11. 11.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a piece of chalk (d) a plastic ruler
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a stiff postcard (d) a towel
13. 13.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a pencil (c) safety scissors (d) yeast
15. 15.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
16. 16.True or false: a strip of paper is not needed for the paper helicopter. (a) True (b) False
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a balloon (d) a few hours of waiting
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
20. 20.True or false: a magnetic chess set works by magnetism. (a) False (b) True
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a stiff postcard (d) a towel
22. 22.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same card
23. 23.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
24. 24.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it dissolves (d) it sinks
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a magnet (c) a tub of water (d) small test objects
27. 27.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
28. 28.🔍 Which is the odd one out? (a) ice becoming water (b) a puddle drying up (c) butter going runny (d) snow turning to water
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a glass of water (d) a sink or a bucket
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is the one thing we change. (a) True (b) False
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the amount of sugar (c) the water temperature (d) the amount of water
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.True or false: a piece of chalk does not let water climb. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a toy parachute (b) a glass marble (c) a coin (d) a stone
38. 38.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it goes much farther (d) it turns into a kite
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.🥄 Which of these does not dissolve in water? (a) sawdust (b) table salt (c) sugar (d) baking soda

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