Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 856 · 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 of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a magnetic pin holder (d) a drinking straw
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
3. 3.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
4. 4.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
5. 5.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
6. 6.⚖️ 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 measure it (b) we change it (c) we keep it the same
7. 7.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a magnet (c) vinegar (d) sticky tape
8. 8.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a magnet (c) yeast (d) a tall clear glass
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a battery cell (d) a towel for spills
11. 11.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a paper towel (d) a steel spoon
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
13. 13.True or false: a battery cell is not needed for the paper helicopter. (a) False (b) True
14. 14.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) True (b) False
16. 16.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they turn to honey (c) they separate again (d) they mix for ever
17. 17.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🛟 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
20. 20.🥄 Which of these dissolves slower? (a) powdered sugar (b) a big sugar cube (c) sugar in warm water (d) sugar stirred well
21. 21.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
23. 23.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.True or false: baking soda dissolves in water. (a) True (b) False
25. 25.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to win a prize (d) to hide the corks
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same window (c) the amount of water
27. 27.True or false: a steel spoon lets water climb up it. (a) True (b) False
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.True or false: a ruler is not needed for the paper helicopter. (a) True (b) False
30. 30.True or false: gas from the rocket goes forward. (a) True (b) False
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
32. 32.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) a big bowl (c) ice cubes (d) a battery cell
33. 33.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sugar (d) sand
34. 34.True or false: sunlight is needed for the water cycle bowl. (a) False (b) True
35. 35.True or false: a mirror is needed for the water cycle bowl. (a) False (b) True
36. 36.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🔍 Which is the odd one out? (a) a toy parachute (b) a coin (c) a steel spoon (d) a crumpled paper ball
38. 38.True or false: cooking oil is not needed for the density tower. (a) True (b) False
39. 39.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a balloon (d) turmeric powder
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the kind of clay

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