Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 884 · 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 compass needle (b) a drinking straw (c) a suction hook (d) a vacuum cleaner
2. 2.True or false: a bicycle pump works by air pressure. (a) False (b) True
3. 3.🚁 Which of these falls fast through the air? (a) a coin (b) a paper helicopter (c) a toy parachute (d) an open sheet of paper
4. 4.🥄 Which of these does not dissolve in water? (a) baking soda (b) small pebbles (c) food colour (d) table salt
5. 5.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a medicine dropper
6. 6.🚁 Which of these falls slowly through the air? (a) a stone (b) a steel spoon (c) a coin (d) a feather
7. 7.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) turmeric powder (c) water (d) yeast
8. 8.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
9. 9.True or false: a sugar cube does not let water climb. (a) True (b) False
10. 10.⚖️ 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
11. 11.💧 Which of these is melting? (a) a puddle drying up (b) ice becoming water (c) drops on a cold glass (d) a misty bathroom mirror
12. 12.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) sticky tape (d) yeast
13. 13.🔍 Which is the odd one out? (a) an empty capped bottle (b) a dry leaf (c) an ice cube (d) a pebble
14. 14.🔍 Which is the odd one out? (a) snow turning to water (b) wet hair drying (c) wet clothes drying (d) a puddle drying up
15. 15.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
17. 17.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) powdered sugar (d) both the same
18. 18.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it sinks (d) it dissolves
19. 19.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) let the water evaporate (c) stir it more (d) add more water
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the paper clip (b) time to reach the floor (c) the length of the blades
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) False (b) True
22. 22.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) behind you (d) straight above you
23. 23.⚖️ 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 keep it the same (c) we change it
24. 24.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) a small cup (c) sunlight (d) a magnet
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) neither of them (d) the crumpled ball
27. 27.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it turns blue (d) it floats higher
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cotton wool (b) a clock or timer (c) warm water (d) sugar
29. 29.True or false: a paper towel lets water climb up it. (a) False (b) True
30. 30.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
31. 31.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
32. 32.True or false: a feather falls slowly through the air. (a) True (b) False
33. 33.True or false: a battery cell is not needed for the density tower. (a) False (b) True
34. 34.True or false: a battery cell is not needed for the water cycle bowl. (a) False (b) True
35. 35.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a towel for spills (d) turmeric powder
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the size of the bowl (b) the time we wait (c) sun or shade (d) how many drops form
37. 37.🌈 In VIBGYOR, what number colour is orange?
38. 38.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a battery cell (d) turmeric powder
40. 40.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) a magnet (d) a spoon

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