Float or Sink

This worksheet is designed for students in Grades 5, 6, and 7 to explore buoyancy, density, and fluid behavior through applied scientific problem solving. Learners calculate object density using mass and volume, compare results to the density of water, and predict whether objects will float, sink, or remain suspended while strengthening proportional reasoning, formula application, and analytical thinking.

Academic Focus

• Buoyancy & Density Concepts (Grades 5-7)
  Students analyze how object density relative to water affects floating behavior.
• Applying Scientific Formulas
  Learners calculate density using mass and volume to support predictions.
• Ratios & Proportional Reasoning
  Problems introduce the fraction of an object submerged and its relationship to density ratios.
• Fluid Properties & Material Behavior
  Activities connect density concepts to real-world fluid mechanics and displacement.

Instructional Benefits

• Teacher-Created Resource
  Developed by educators to align with upper elementary and middle school science standards.
• Hands-On Reasoning Without Lab Setup
  Provides conceptual exploration of buoyancy without requiring physical materials.
• Supports Science & Math Integration
  Combines numerical calculations with scientific interpretation and explanation.
• Flexible Classroom Use
  Ideal for science lessons, homework, review, enrichment, or assessment preparation.
• Printable & No-Prep
  Easy to use in classrooms or homeschool settings.

This float or sink worksheet helps students develop a clear understanding of buoyancy, density, and fluid behavior through calculation and reasoning. By predicting floating outcomes and analyzing submerged fractions, learners strengthen scientific thinking, proportional reasoning, and real-world application skills. Whether used in a classroom or homeschool environment, this printable resource provides meaningful practice in understanding how density governs floating and sinking phenomena.

This worksheet is part of our Density collection.