Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 633 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it sinks (d) it turns blue
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
3. 3.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
4. 4.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it turns to stone (d) it dissolves
5. 5.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
6. 6.True or false: an ice-cream stick floats on water. (a) True (b) False
7. 7.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) True (b) False
10. 10.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
11. 11.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) the amount of clay (c) the shape of the clay (d) whether it floats
13. 13.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a little shaking (c) a few ice cubes (d) more plain water
14. 14.🛟 Which of these sinks in water? (a) a cork (b) an empty capped bottle (c) a feather (d) a steel spoon
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
16. 16.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
17. 17.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🔍 Which is the odd one out? (a) a piece of thermocol (b) a metal key (c) an iron nail (d) a glass marble
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) a battery cell
22. 22.🛟 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 hide the corks (d) to win a prize
23. 23.🛟 Which of these floats on water? (a) a metal key (b) a steel spoon (c) a pebble (d) an ice-cream stick
24. 24.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is very cold (d) ice is magnetic
25. 25.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
26. 26.⚖️ 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
27. 27.🛟 Which of these sinks in water? (a) a dry leaf (b) a glass marble (c) a ping-pong ball (d) an ice-cream stick
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) small test objects (d) a magnet
29. 29.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) whether it floats (c) the shape of the clay
31. 31.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
32. 32.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a towel for spills (c) a balloon (d) a battery cell
33. 33.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a mirror (c) a towel for spills (d) small test objects
34. 34.True or false: a cork floats on water. (a) True (b) False
35. 35.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a tub of water (d) turmeric powder
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) a magnet (d) small test objects
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) small test objects (d) yeast
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a tub of water (d) a balloon
40. 40.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed

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