Practice Buoyancy (5.2) - Buoyancy and Archimedes’ Principle

Practise this section

8 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define buoyancy.
Show hintHide hint
Consider the force that helps things float.
Question 2.
What is Archimedes' Principle?
Show hintHide hint
Think about the relationship between weight and fluid.
3Question 3.
What is buoyancy?
- The force of gravity
- The upward force by a fluid
- The weight of an object
Show hintHide hint
Remember what keeps objects afloat.
4Question 4.
True or False: Heavier objects always sink.
- True
- False
Show hintHide hint
Consider the role of buoyant force.
Question 5.
A cylindrical object with a diameter of 1 m and a height of 2 m is submerged in a lake. Calculate the buoyant force acting on it if the density of the lake water is 1025 kg/m³. (Use g = 9.81 m/s²)
Show hintHide hint
Calculate the volume first, then use it to find the buoyant force.
Question 6.
Explain why a heavy steel ship floats while a small steel ball sinks, in terms of buoyancy.
Show hintHide hint
Consider volume displacement for both objects compared to their weights.

4 more questions in this section. Enroll free to practise them all.