Practice Law Of Floatation (5.8) - Buoyancy and Archimedes’ Principle

Practise this section

8 questions

Flashcard drill
2 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.
What determines if a body floats or sinks in water?
Show hintHide hint
Think about what happens to weight.
Question 2.
Give an example of an object that floats.
Show hintHide hint
Think of objects that are not too dense.
3Question 3.
What is the primary reason an object floats in a fluid?
- It is lighter than water
- It displaces water equal to its weight
- It is made of plastic
Show hintHide hint
Think about balance.
4Question 4.
If an object has a density greater than the fluid, will it float?
- True
- False
Show hintHide hint
Density matters in buoyancy.
Question 5.
A cylindrical can with a radius of 0.1 m and height of 0.5 m is submerged in water. Calculate the buoyant force acting on the can if the density of water is 1000 kg/m³.
Show hintHide hint
Use the formula for the volume of a cylinder to find the displaced volume.
Question 6.
Explain how the design of a life jacket utilizes the principles of buoyancy to help a person float.
Show hintHide hint
Consider how displacement and weight relate in floating.

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