IB myp 4-5 physics – Practice Questions- All Topics
Topic :Forces and energy-State properties of matter, kinetic theory
Topic :Forces and energy– Weightage : 21 %
All Questions for Topic :States & properties of matter, kinetic particle theory, density, pressure, molecular arrangements
Question
The pressure at the top of Mount Everest is only $0.33 \mathrm{~atm}$. What are the boiling and freezing points of water at this altitude?
▶️Answer/Explanation
Freezing point $=0^{\circ} \mathrm{C}$
Boiling point $=70^{\circ} \mathrm{C}$ [Editor’s note: Allow some flexibility as log scale has not been correctly printed in the first edition of MYP Physics]
Queston
To hard boil an egg it needs to be cooked at about $85^{\circ} \mathrm{C}$. At what pressure will water boil at a high enough temperature to achieve this?
▶️Answer/Explanation
$0.6 \mathrm{~atm}$
Question
Using the graph of altitude against atmospheric pressure, find the maximum altitude at which you could hard boil an egg.
Graph of altitude vs pressure
▶️Answer/Explanation
$4000 \mathrm{~m}$