Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 80 · 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.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
3. 3.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a magnet
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a magnet (d) a white flower
6. 6.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
7. 7.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
8. 8.⚖️ 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
9. 9.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) turmeric powder (c) small test objects (d) a tub of water
11. 11.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) the sugar cube (c) both the same (d) powdered sugar
12. 12.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
13. 13.🔍 Which is the odd one out? (a) sugar (b) sawdust (c) food colour (d) glucose powder
14. 14.True or false: turmeric powder is not needed for the balloon rocket. (a) True (b) False
15. 15.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.💧 Which of these does not let water climb? (a) a paper towel (b) a glass marble (c) a sugar cube (d) a strip of cloth
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the drop height (b) time to reach the floor (c) the length of the blades (d) the kind of paper
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
19. 19.⚖️ 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 time we wait (b) sun or shade (c) the cling film cover (d) how many drops form
20. 20.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) from your raised hand (c) a roof edge (d) a wobbly chair
22. 22.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
23. 23.🔍 Which is the odd one out? (a) drops on a cold glass (b) wet hair drying (c) sweat drying on skin (d) a puddle drying up
24. 24.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a spoon (c) cooking oil (d) a magnet
25. 25.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) under the honey (c) in the water layer (d) in the honey layer
26. 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) a magnet (d) a drinking straw
27. 27.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) sugar (c) a comb (d) a balloon
28. 28.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) False (b) True
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is kept the same. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) very salty water (b) a cork (c) a coin (d) a glass marble
35. 35.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
36. 36.🚁 Which of these falls slowly through the air? (a) a glass marble (b) a steel spoon (c) a crumpled paper ball (d) a feather
37. 37.True or false: the balloon goes forward. (a) True (b) False
38. 38.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) a paper clip (c) a battery cell (d) a balloon
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
40. 40.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids