Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 976 · 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.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a little shaking (c) more plain water (d) a few ice cubes
2. 2.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) both the same (c) neither of them (d) powdered sugar
5. 5.⚖️ 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 what we measure. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a pebble (b) cooking oil (c) air (d) an ice cube
7. 7.💧 Which change is this: a pond icing over? (a) melting (b) evaporation (c) freezing (d) condensation
8. 8.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
9. 9.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
10. 10.True or false: a big bowl is not needed for the water cycle bowl. (a) True (b) False
11. 11.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) the spoon (c) cooking oil (d) honey
12. 12.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the honey layer (c) in the water layer (d) on top of the oil
13. 13.⚖️ 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 change it (b) we keep it the same (c) we measure it
14. 14.True or false: a glass marble falls fast through the air. (a) False (b) True
15. 15.🧺 Which of these is not needed for the density tower? (a) a balloon (b) honey (c) a tall clear glass (d) water with food colour
16. 16.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
17. 17.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) no change at all (c) less friction (d) it goes faster
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🔍 Which is the odd one out? (a) a coin (b) honey (c) a pebble (d) cooking oil
20. 20.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the kind of clay (c) the tub of water (d) the shape of the clay
22. 22.⚖️ 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 what we measure. (a) True (b) False
23. 23.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a pebble (c) an ice-cream stick (d) a ping-pong ball
24. 24.True or false: a steel spoon sinks in water. (a) False (b) True
25. 25.🧺 Do we need turmeric powder for the paper helicopter? (a) not needed (b) needed
26. 26.True or false: a cork is less dense than water. (a) True (b) False
27. 27.True or false: a magnet is not needed for the water cycle bowl. (a) False (b) True
28. 28.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
29. 29.💧 Which change is this: making ice lollies? (a) evaporation (b) melting (c) freezing (d) condensation
30. 30.True or false: the balloon goes backward. (a) True (b) False
31. 31.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) two clear glasses (c) a magnet (d) honey
32. 32.True or false: yeast is needed for the density tower. (a) True (b) False
33. 33.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
34. 34.⚖️ 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) False (b) True
35. 35.🔍 Which is the odd one out? (a) a coin (b) a pebble (c) a dry leaf (d) a steel spoon
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a towel for spills (d) a tub of water
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🔍 Which is the odd one out? (a) a ball of clay (b) an empty capped bottle (c) a piece of thermocol (d) a cork
39. 39.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) small test objects (c) a tub of water (d) a results table

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