Kramizo
Log inSign up free
HomeCXC CSEC PhysicsUpthrust and Flotation
CXC · CSEC · Physics

Upthrust and Flotation
Practice Questions

20 CXC CSEC Physics questions on Upthrust and Flotation, each with instant feedback and a full examiner-style mark scheme.

⚡ Start Quiz on Upthrust and FlotationTry one question

Try 2 sample questions on Upthrust and Flotation

Question 1 · 1 mark · Difficulty 1/3

A wooden block floats in water with half its volume submerged. Which statement correctly explains why the block floats?

  1. The upthrust is greater than the weight of water displaced
  2. The upthrust equals the weight of the block
  3. The density of water equals the density of the block
  4. The weight of the block equals the weight of all the water
Show answer & explanation
✓ Answer: BThe upthrust equals the weight of the block
A floating object is in equilibrium, so the upthrust (equal to the weight of fluid displaced) exactly equals the weight of the object. Option B is wrong because the block floats with only half submerged, meaning its average density is half that of water. Option C is wrong because only the weight of the displaced water matters, not all the water. Option D is wrong because upthrust equals the weight of displaced fluid — it is not greater than it.
Question 2 · 1 mark · Difficulty 1/3

A cube of material has a weight of 12 N in air and an apparent weight of 7 N when fully submerged in fresh water. What is the upthrust acting on the cube?

  1. 12 N
  2. 5 N
  3. 19 N
  4. 7 N
Show answer & explanation
✓ Answer: B5 N
Upthrust = Weight in air − Apparent weight in fluid = 12 N − 7 N = 5 N. Option A is wrong because 19 N is the sum of the two values, not the difference. Option B is wrong because 12 N is the weight in air, not the upthrust. Option D is wrong because 7 N is the apparent weight in water, not the upthrust.
⚡ Start a Quiz on Upthrust and Flotation
20 questions · 25 min · free

CXC CSEC Physics: Upthrust and Flotation FAQ

How many CXC CSEC Physics questions on Upthrust and Flotation are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Upthrust and Flotation for CXC CSEC Physics, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CXC paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CXC CSEC students preparing for Physics?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Upthrust and Flotation practice with other Physics topics or even switch to a totally different CXC subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Upthrust and Flotation questions aligned to the official CXC CSEC Physics syllabus?
Every question is written against the published CXC CSEC Physics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CXC.
How is Upthrust and Flotation typically tested on CXC CSEC Physics papers?
Upthrust and Flotation appears across multiple question types on real CXC CSEC Physics papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

Lock in Upthrust and Flotation before exam day.

Start practising in 30 seconds — no card required.

⚡ Start Quiz Free →