Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 424 · 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.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sunny window (c) yeast (d) a balloon
2. 2.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) a towel for spills (c) a results table (d) small test objects
3. 3.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it dissolves (c) it floats (d) it bounces up
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🌈 In VIBGYOR, what number colour is blue?
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a magnet (d) a glass of water
7. 7.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) yeast (c) a pencil (d) a ruler
8. 8.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) pour it on the floor (c) throw the glass (d) taste each layer
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a magnet (c) a balloon (d) a drinking straw
10. 10.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
12. 12.True or false: a glass marble lets water climb up it. (a) False (b) True
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a mirror (d) a sink or a bucket
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a magnet (d) a towel for spills
15. 15.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
16. 16.⚖️ 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) sun or shade (b) the size of the bowl (c) the time we wait (d) how many drops form
17. 17.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a ball of clay (c) a feather (d) an ice-cream stick
18. 18.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
19. 19.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
20. 20.⚖️ 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 order of the layers (b) how much of each liquid (c) the same three liquids (d) the order of pouring
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
23. 23.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) at the very bottom (b) in the water layer (c) on top of the oil (d) in the oil layer
24. 24.True or false: a fluff of cotton falls slowly through the air. (a) True (b) False
25. 25.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
26. 26.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
27. 27.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
28. 28.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
29. 29.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
31. 31.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
32. 32.🛟 Which of these sinks in water? (a) a feather (b) a dry leaf (c) a cork (d) a pebble
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.True or false: a glass marble falls slowly through the air. (a) True (b) False
36. 36.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
40. 40.True or false: a small cup is needed for the water cycle bowl. (a) True (b) False

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