Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 825 · 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.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
2. 2.🛟 Which of these floats on water? (a) a coin (b) a glass marble (c) a dry leaf (d) an iron nail
3. 3.🔍 Which is the odd one out? (a) a piece of thermocol (b) a coin (c) a ball of clay (d) a pebble
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 dissolves (d) it turns to stone
5. 5.🧺 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) a balloon
6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) a towel for spills (d) a results table
7. 7.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
9. 9.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a tub of water (d) a battery cell
11. 11.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it sinks (d) it dissolves
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) yeast (c) a tub of water (d) a results table
13. 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a battery cell (c) a tub of water (d) a towel for spills
14. 14.True or false: a ping-pong ball sinks in water. (a) False (b) True
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
16. 16.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) lots of salt stirred in (c) more plain water (d) a few ice cubes
17. 17.⚖️ 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
18. 18.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is very cold (c) ice is less dense (d) water is sticky
19. 19.🧺 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 magnet (d) a tub of water
20. 20.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
21. 21.🌊 What pushes a floating cork upward? (a) the tub (b) the cork itself (c) the air above (d) the water
22. 22.🔍 Which is the odd one out? (a) a cork (b) a feather (c) a pebble (d) a piece of thermocol
23. 23.True or false: a steel spoon floats on water. (a) False (b) True
24. 24.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
25. 25.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) wipe up spills at once (d) leave water on the floor
26. 26.🔍 Which is the odd one out? (a) a metal key (b) a dry leaf (c) an ice cube (d) an ice-cream stick
27. 27.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it dissolves (d) it sinks
28. 28.🛟 Which of these floats on water? (a) a coin (b) a metal key (c) a pebble (d) a feather
29. 29.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
30. 30.🛟 Which of these floats on water? (a) a steel spoon (b) a pebble (c) a glass marble (d) a cork
31. 31.⚖️ 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 measure it (c) we keep it the same
32. 32.🔍 Which is the odd one out? (a) an ice cube (b) a feather (c) a glass marble (d) a dry leaf
33. 33.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
34. 34.True or false: a ping-pong ball floats on water. (a) False (b) True
35. 35.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a magnet (c) small test objects (d) a towel for spills
37. 37.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a tub of water (c) a mirror (d) turmeric powder
38. 38.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
39. 39.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it floats higher (d) it sinks
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a mirror (c) a tub of water (d) a towel for spills

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