Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 508 · 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.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
2. 2.⚖️ 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) how many drops form (b) sun or shade (c) the amount of water (d) the cling film cover
3. 3.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) two clear glasses (c) a teaspoon (d) cold water
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a paper clip (c) a balloon (d) safety scissors
5. 5.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it does not fall (c) it spins the other way (d) it turns blue
6. 6.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
7. 7.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
8. 8.True or false: an ice cube is denser than water. (a) False (b) True
9. 9.💧 Which of these is condensation? (a) water becoming ice (b) a misty bathroom mirror (c) a puddle drying up (d) wet clothes drying
10. 10.⚖️ 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
11. 11.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
12. 12.💧 Which of these lets water climb up it? (a) a flower stem (b) a glass marble (c) a plastic ruler (d) a steel spoon
13. 13.True or false: warm water is needed for the dissolving test. (a) True (b) False
14. 14.📘 What is the push of air on a falling thing called? (a) dissolving (b) floating (c) magnetism (d) air resistance
15. 15.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the water layer (c) in the honey layer (d) on top of the oil
16. 16.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny bits of dust (d) tiny drops of water
17. 17.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is the one thing we change. (a) True (b) False
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is what we measure. (a) False (b) True
21. 21.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) from your raised hand (c) a roof edge (d) a high window ledge
22. 22.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it dissolves (c) it bounces up (d) it floats
23. 23.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
24. 24.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
25. 25.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a drinking straw (c) a battery cell (d) turmeric powder
26. 26.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
27. 27.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it dissolves (d) it still floats
29. 29.🔮 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
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
31. 31.⚖️ 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 glass (b) the amount of water (c) brightness of rainbow (d) the same white paper
32. 32.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
33. 33.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) a clear glass of water (d) turmeric powder
34. 34.🔍 Which is the odd one out? (a) an empty capped bottle (b) a dry leaf (c) a piece of thermocol (d) a ball of clay
35. 35.🧺 Which of these is needed for the balloon rocket? (a) two chairs (b) a mirror (c) yeast (d) turmeric powder
36. 36.⚖️ 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) how many drops form (c) the size of the bowl
37. 37.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a magnet (c) small test objects (d) a tub of water
39. 39.🍯 Which of these is denser than water? (a) a pebble (b) a ping-pong ball (c) air (d) an ice cube
40. 40.🌈 In VIBGYOR, what number colour is violet?

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