Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 90 · 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.True or false: a feather floats on water. (a) False (b) True
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a mirror (c) a tub of water (d) small test objects
3. 3.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
4. 4.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it sinks (d) it turns white
5. 5.🔍 Which is the odd one out? (a) a ping-pong ball (b) an ice-cream stick (c) a coin (d) an ice cube
6. 6.🛟 Does a cork float or sink in water? (a) floats (b) sinks
7. 7.🛟 Which of these sinks in water? (a) an ice cube (b) a dry leaf (c) a pebble (d) an empty capped bottle
8. 8.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
9. 9.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) sea water is warm (d) its hollow shape
10. 10.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a ping-pong ball (b) a feather (c) a pebble (d) a dry leaf
13. 13.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a towel for spills (d) a battery cell
15. 15.🔍 Which is the odd one out? (a) a piece of thermocol (b) a ball of clay (c) a metal key (d) a glass marble
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a tub of water (d) turmeric powder
17. 17.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) wipe up spills at once (d) play near a deep pond
18. 18.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
19. 19.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a tub of water (d) a mirror
20. 20.⚖️ 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
21. 21.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the big log (c) the small pebble (d) neither of them
22. 22.🛟 Which of these floats on water? (a) a ball of clay (b) a piece of thermocol (c) an iron nail (d) a glass marble
23. 23.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) small test objects (d) turmeric powder
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the kind of clay (c) the tub of water (d) the shape of the clay
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the amount of clay (c) whether it floats (d) the tub of water
26. 26.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
27. 27.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) a balloon (d) small test objects
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a balloon (c) a magnet (d) a battery cell
30. 30.🛟 Which of these sinks in water? (a) an ice-cream stick (b) an empty capped bottle (c) a feather (d) a metal key
31. 31.🧺 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) a mirror
32. 32.🌊 What pushes a floating cork upward? (a) the water (b) the tub (c) the cork itself (d) the air above
33. 33.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
34. 34.True or false: a cork sinks in water. (a) True (b) False
35. 35.⚖️ 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 keep it the same (b) we change it (c) we measure it
36. 36.⚖️ 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
37. 37.True or false: a steel spoon sinks in water. (a) False (b) True
38. 38.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it turns blue (c) it melts (d) it floats higher
39. 39.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a magnet (c) a balloon (d) a battery cell
40. 40.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed

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