Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 420 · 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.⚖️ 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
2. 2.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the big log (c) the small pebble (d) both of them
3. 3.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) run around the tub (d) leave water on the floor
4. 4.⚖️ 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) whether it floats (c) the tub of water (d) the shape of the clay
5. 5.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
6. 6.⚖️ 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
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
8. 8.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
9. 9.🧺 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 towel for spills (d) a mirror
10. 10.🛟 Which of these floats on water? (a) a pebble (b) a steel spoon (c) a coin (d) an ice-cream stick
11. 11.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
12. 12.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
13. 13.⚖️ 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 measure it (c) we change it
14. 14.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the tub (d) the water
15. 15.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) a metal key (d) a dry leaf
16. 16.🛟 Which of these floats on water? (a) a glass marble (b) an ice cube (c) a ball of clay (d) a pebble
17. 17.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it sinks (c) it melts (d) it turns blue
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is less dense (d) ice is very cold
20. 20.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
21. 21.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
22. 22.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
23. 23.🔍 Which is the odd one out? (a) a ball of clay (b) an ice-cream stick (c) a piece of thermocol (d) an ice cube
24. 24.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
25. 25.True or false: a coin sinks in water. (a) False (b) True
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a results table (d) a mirror
27. 27.⚖️ 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
28. 28.🛟 Which of these sinks in water? (a) an iron nail (b) an empty capped bottle (c) a feather (d) a cork
29. 29.True or false: an empty capped bottle sinks in water. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a cork (b) a dry leaf (c) a metal key (d) a ping-pong ball
31. 31.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) lots of salt stirred in (c) a few ice cubes (d) more plain water
32. 32.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
33. 33.🔍 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
34. 34.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a balloon (c) a tub of water (d) a magnet
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an ice cube (c) a cork (d) a coin
38. 38.True or false: an empty capped bottle floats on water. (a) False (b) True
39. 39.True or false: a ping-pong ball floats on water. (a) True (b) False
40. 40.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True

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