Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 290 · 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.True or false: sweat drying on skin is condensation. (a) False (b) True
2. 2.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) True (b) False
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a clear glass of water (d) a sunny window
5. 5.True or false: powdered sugar dissolves slower. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a steel spoon (b) an open sheet of paper (c) a glass marble (d) a stone
7. 7.True or false: honey is not needed for the density tower. (a) False (b) True
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
9. 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) the same glass (c) the order of the layers (d) how much of each liquid
10. 10.True or false: a cork sinks in water. (a) False (b) True
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
12. 12.⚖️ 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) the same glass (c) the same card (d) whether the card stays
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.⚖️ 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 keep it the same (b) we measure it (c) we change it
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a battery cell (d) a stiff postcard
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
18. 18.🥄 Which of these dissolves slower? (a) powdered sugar (b) a big sugar cube (c) sugar in warm water (d) sugar stirred well
19. 19.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) from your raised hand (c) a high window ledge (d) a wobbly chair
20. 20.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the amount of water (b) the water temperature (c) time to dissolve (d) the amount of sugar
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the kind of clay (d) the tub of water
23. 23.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
24. 24.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
25. 25.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
26. 26.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the water (d) the tub
27. 27.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a strip of cloth (d) a plastic ruler
28. 28.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) whether it floats (c) the kind of clay (d) the shape of the clay
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the kind of clay (c) whether it floats
31. 31.True or false: a big sugar cube dissolves faster. (a) True (b) False
32. 32.🥄 Which of these does not dissolve in water? (a) sugar (b) sand (c) food colour (d) glucose powder
33. 33.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
35. 35.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
36. 36.True or false: a balloon is needed for the paper helicopter. (a) True (b) False
37. 37.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
38. 38.True or false: safety scissors is not needed for the paper helicopter. (a) False (b) True
39. 39.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we keep it the same (c) we measure it

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