Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 250 · 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.🌈 In VIBGYOR, what number colour is indigo?
2. 2.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
3. 3.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) the sugar cube (d) powdered sugar
4. 4.True or false: a coin sinks in water. (a) False (b) True
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the room it stands in (c) the length of the stem (d) the kind of flower
6. 6.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
7. 7.⚖️ 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 change it (c) we measure it
8. 8.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) faster (c) they never dry (d) slower
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
10. 10.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
11. 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) cooking oil (c) honey (d) water with food colour
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) True (b) False
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a drinking straw (c) a balloon (d) sticky tape
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🔍 Which is the odd one out? (a) a coin (b) a piece of thermocol (c) a steel spoon (d) a glass marble
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a battery cell
18. 18.🥄 Which of these dissolves slower? (a) a big sugar cube (b) sugar in warm water (c) powdered sugar (d) sugar stirred well
19. 19.🌈 In VIBGYOR, what number colour is orange?
20. 20.True or false: a balloon is needed for the density tower. (a) False (b) True
21. 21.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) water is sticky (c) ice is less dense (d) ice is very cold
22. 22.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
23. 23.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
24. 24.🧺 Which of these is not needed for the dissolving test? (a) a mirror (b) warm water (c) sugar (d) a clock or timer
25. 25.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
26. 26.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
27. 27.True or false: a steel spoon floats on water. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a paper helicopter (b) a steel spoon (c) a toy parachute (d) an open sheet of paper
29. 29.🔍 Which is the odd one out? (a) a feather (b) a glass marble (c) a dry leaf (d) a cork
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.True or false: a stone falls fast through the air. (a) True (b) False
32. 32.True or false: sand does not dissolve in water. (a) False (b) True
33. 33.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
34. 34.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) clouds (d) prisms
35. 35.True or false: a paper helicopter falls fast through the air. (a) True (b) False
36. 36.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
37. 37.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a wobbly chair (c) from your raised hand (d) a high window ledge
38. 38.🛟 Which of these floats on water? (a) a steel spoon (b) an iron nail (c) a pebble (d) a ping-pong ball
39. 39.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
40. 40.🛟 Which of these floats on water? (a) a ball of clay (b) a glass marble (c) a piece of thermocol (d) a metal key

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