Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 921 · 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 is the odd one out? (a) a steel spoon (b) a coin (c) a paper helicopter (d) a glass marble
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a cotton thread
3. 3.🌈 In VIBGYOR, what number colour is indigo?
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
5. 5.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) do not lick the spoon (d) throw the glass
6. 6.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
7. 7.True or false: a metal key sinks in water. (a) False (b) True
8. 8.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
9. 9.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it gets too heavy (c) it turns into a kite (d) it changes colour
10. 10.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
11. 11.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) chalk powder (d) cooking oil
14. 14.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is magnetic (c) hot water can scald (d) hot water is heavy
15. 15.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
16. 16.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) cold water (c) a comb (d) sugar
18. 18.True or false: turmeric powder is needed for the water cycle bowl. (a) False (b) True
19. 19.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar in icy water
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) ice cubes (c) cling film (d) a mirror
22. 22.🌈 In VIBGYOR, what number colour is red?
23. 23.True or false: yeast is needed for the water rainbow. (a) True (b) False
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a mirror (d) a battery cell
25. 25.True or false: sugar in warm water dissolves slower. (a) True (b) False
26. 26.⚖️ 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) how full the glass is (b) the way we turn it (c) the same card (d) whether the card stays
27. 27.True or false: cold water is not needed for the dissolving test. (a) False (b) True
28. 28.🧺 Do we need a magnet for the paper helicopter? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a crumpled paper ball (c) a toy parachute (d) a glass marble
30. 30.🛟 Which of these sinks in water? (a) a feather (b) a ping-pong ball (c) a piece of thermocol (d) a glass marble
31. 31.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
32. 32.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) True (b) False
33. 33.True or false: a clock or timer is not needed for the dissolving test. (a) True (b) False
34. 34.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
35. 35.True or false: a magnet is needed for the water rainbow. (a) True (b) False
36. 36.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
37. 37.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a flower stem
38. 38.True or false: an empty capped bottle sinks in water. (a) True (b) False
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
40. 40.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False

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