Science Worksheet · Grades 5–7
Density Worksheet
A printable science worksheet for grades 5-7 on density: how much mass is packed into a space, and why objects more dense than water sink while less dense ones float. Students predict sink or float for eight objects, then explain density. A complete answer key is included.
Subject
Science
Grades
Grades 5–7
Skill Focus
Density, physical science
Lesson Length
20 minutes
Lesson Overview
About this worksheet
Density is how much mass is packed into a certain amount of space, called volume. An object that is more dense than water sinks, and an object that is less dense than water floats – which is why a rock sinks but a cork floats. This worksheet helps students use density to predict and explain what happens in water.
Section A on page 1 gives eight objects, each labeled more or less dense than water, and asks students to predict sink or float. The reference box teaches the idea with a rock and a cork, which are not reused in any item.
Section B on page 2 asks students what density is, whether a sinking object is more or less dense than water, why oil floats, and which of two same-size balls is more dense. Page 3 is a complete answer key with sample answers. The skill builds toward matter and buoyancy.
How to Use This Lesson
Read the reference box aloud and compare the rock and the cork in water.
Complete Section A independently – have students use the density note in each item.
Work Section B item 12 together: which same-size ball is more dense?
Use the answer key on page 3 for self-check.
Pair with the Sink or Float Worksheet or the States of Matter Worksheet.
Printable Resource
A classroom-ready PDF with everything in one printable resource.
Full Member Resource · Printable PDF · 3 pages · Answer Key
Density Worksheet
A printable science worksheet for grades 5-7 on density: how much mass is packed into a space, and why objects more dense than water sink while less dense ones float. Students predict sink or float for eight objects, then explain density. A complete answer key is included.
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