Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 786 · 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.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.True or false: very salty water is denser than water. (a) True (b) False
4. 4.True or false: a spoon is not needed for the density tower. (a) False (b) True
5. 5.⚖️ 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 same three liquids (b) the order of the layers (c) the order of pouring (d) the same glass
6. 6.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a battery cell (c) honey (d) a spoon
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🔍 Which is the odd one out? (a) a fluff of cotton (b) a toy parachute (c) a coin (d) a feather
9. 9.🧺 Which of these is needed for the density tower? (a) honey (b) a mirror (c) a magnet (d) a battery cell
10. 10.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
11. 11.True or false: a comb is needed for the dissolving test. (a) True (b) False
12. 12.⚖️ 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 keep it the same (b) we measure it (c) we change it
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a mirror (c) safety scissors (d) a strip of paper
16. 16.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the densest (c) it is yellow (d) it is the stickiest
17. 17.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
18. 18.True or false: a fridge magnet works by air pressure. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a dry leaf (b) an ice-cream stick (c) a feather (d) a steel spoon
20. 20.⚖️ 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 same card (b) the same glass (c) whether the card stays (d) the way we turn it
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) True (b) False
22. 22.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
24. 24.💧 Which change is this: dew on morning grass? (a) freezing (b) evaporation (c) melting (d) condensation
25. 25.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.True or false: an open sheet of paper falls fast through the air. (a) True (b) False
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
31. 31.⚖️ 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 same glass”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) a high window ledge (c) a roof edge (d) from your raised hand
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a drinking straw
35. 35.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it changes colour (d) it can pop loudly
36. 36.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
37. 37.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the same white paper (c) brightness of rainbow
39. 39.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
40. 40.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) cling film (c) a balloon (d) a magnet

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