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Sink or Float Experiment

Explore the concepts of sinking and floating with various objects and make predictions based on their properties.

Grade 4 Science PhysicsSink or Float
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Includes

Fill in the BlanksMultiple ChoiceTableShort Answer

Standards

4-PS3-2

Topics

sinkfloatdensitysciencegrade 4
6 sections · Free to use · Printable
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Sink or Float Experiment

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Date:

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Read each question carefully and follow the instructions. For the experiment, you will need a tub of water and various objects.

1. An object will   if it is less dense than water.

2. An object will   if it is more dense than water.

3. The amount of space an object takes up is called its  .

4. The amount of matter in an object is called its  .

5. Which of these objects is most likely to float?

a

A rock

b

A metal spoon

c

A wooden block

d

A coin

For each object, predict if it will sink or float. Then, perform the experiment and record your observation.

Object

Prediction (Sink/Float)

Observation (Sink/Float)

Pencil

Key

Paperclip

Leaf

Plastic Toy

6. Why do some objects float and others sink?