Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 58 · 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 turns blue (b) it sinks (c) it melts (d) it floats higher
2. 2.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
3. 3.🌊 What pushes a floating cork upward? (a) the air above (b) the water (c) the cork itself (d) the tub
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a balloon (c) a towel for spills (d) small test objects
5. 5.⚖️ 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 shape of the clay (b) the tub of water (c) the kind of clay (d) whether it floats
6. 6.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
7. 7.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is less dense (c) water is sticky (d) ice is very cold
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it sinks (d) it bounces up
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) leave water on the floor (d) play near a deep pond
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a mirror (d) a results table
13. 13.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) the small pebble (c) neither of them (d) both of them
14. 14.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) sea water is warm (d) steel is very light
15. 15.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
16. 16.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to splash everyone (d) to hide the corks
17. 17.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
18. 18.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
19. 19.True or false: an iron nail floats on water. (a) False (b) True
20. 20.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
21. 21.True or false: an empty capped bottle sinks in water. (a) True (b) False
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
23. 23.True or false: an iron nail sinks in water. (a) True (b) False
24. 24.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it still floats (c) it dissolves (d) it turns white
25. 25.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
26. 26.True or false: a ping-pong ball floats on water. (a) False (b) True
27. 27.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it can float (c) it sinks faster (d) it turns to stone
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a mirror (c) a results table (d) a magnet
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
30. 30.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
31. 31.⚖️ 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 kind of clay (c) the shape of the clay
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
33. 33.True or false: an ice-cream stick floats on water. (a) False (b) True
34. 34.🛟 Which of these sinks in water? (a) a cork (b) a piece of thermocol (c) a pebble (d) a dry leaf
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the amount of clay (c) whether it floats (d) the shape of the clay
36. 36.⚖️ 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) False (b) True
37. 37.🛟 Which of these floats on water? (a) an iron nail (b) a pebble (c) an ice cube (d) a ball of clay
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 results table (c) a battery cell (d) a tub of water
39. 39.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a magnet (c) a tub of water (d) yeast
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) turmeric powder (d) a results table

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