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12.98 Buoyancy and Archimedes' Principle Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physics Science worksheet provides structured practice on 12.98 Buoyancy and Archimedes' Principle. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Buoyancy and Archimedes' Principle: Predict floating, sinking, apparent weight, and buoyant force using density and displaced fluid. Aligned to NGSS, CCSS Literacy and Mathematics, AP Physics, and selected state frameworks 12.98 - Buoyancy and Archimedes' Principle: NGSS HS-PS3-1, HS-PS3-2, HS-PS3-4; HS-PS1 matter connections; CCSS HSN-Q.A, HSA-CED.A, HSF-IF, HSS-ID; AP Physics 1 fluids and AP Physics 2 thermodynamics; TX TEKS Physics §112.45(c); FL SC.912.P.8, SC.912.P.10.4, SC.912.P.12; VA PH.5; MA/CA/NY HS-PS3.

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Physics

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 12.98 Buoyancy and Archimedes' Principle skill assessments:

Problem 1Difficulty: Mastery

A sealed block of known density 720 kg/m³ floats with 60% of its volume submerged in an unknown liquid. What is the density of the liquid?

A432 kg/m³

B720 kg/m³

C1000 kg/m³

D1200 kg/m³

Solution & Explanation:For a floating object, fraction submerged = rho_object/rho_fluid. Thus 0.60 = 720/rho_fluid, so rho_fluid = 720/0.60 = 1200 kg/m³.

Problem 2Difficulty: Mastery

A team wants a small floating sensor platform to support a larger payload without sinking. Which design change most directly increases the maximum payload supported by buoyancy?

AMake the platform material denser without changing its shape.

BDecrease the hull volume so less water is disturbed.

CIncrease the platform's displaced volume while keeping added platform mass small.

DPolish the surface so water pressure stops acting on it.

Solution & Explanation:Maximum buoyant support depends on the greatest weight of fluid the platform can displace. Increasing hull volume without adding much mass increases the payload margin.

Problem 3Difficulty: Mastery

A block of density 700 kg/m³ is tied underwater in freshwater. If the tether breaks, what is the best prediction?

AIt keeps accelerating upward until it leaves the water completely.

BIt rises and then floats with about 70% of its volume submerged.

CIt sinks because the tether was supporting it.

DIt remains fully submerged because its density does not change.

Solution & Explanation:The block is less dense than water, so when fully submerged it has a net upward force. It rises until it floats with fraction submerged = 700/1000 = 0.70.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Physics Science students. It aligns with educational standard 12.98 (NGSS HS-PS3-1, HS-PS3-2, HS-PS3-4; HS-PS1 matter connections; CCSS HSN-Q.A, HSA-CED.A, HSF-IF, HSS-ID; AP Physics 1 fluids and AP Physics 2 thermodynamics; TX TEKS Physics §112.45(c); FL SC.912.P.8, SC.912.P.10.4, SC.912.P.12; VA PH.5; MA/CA/NY HS-PS3.).