Helium Balloons

Question

Malik is investigating the properties of helium. Malik finds the chart below about helium in a textbook.



Malik uses models to study helium as different states of matter. He also investigates the motion of helium molecules.

Multiple Choice Question

Malik places a helium-filled balloon in a sunny window. He wonders how the motion of helium gas molecules in the balloon would be affected by the addition of thermal energy from the Sun. Which graph BEST represents the effect of adding thermal energy on the motion of the helium gas molecules?

A. 



B. 



C. 



D. 



Answer 1

Since I don't have access to the specific graphs you mentioned, I can guide you on how to think about this question based on the principles of thermodynamics and the behavior of gases.

When thermal energy is added to a gas, the molecules gain kinetic energy, which leads to an increase in their motion. This means that the average speed of the helium molecules in the balloon would increase.

In a performance graph where you might see temperature (or thermal energy) plotted against time or energy, the graph that best represents the increase in motion due to added thermal energy would likely show an upward trend or rising slope, indicating increasing motion or increase in kinetic energy of the molecules.

To select the best graph:

• Look for a graph that shows an increase (upward slope) as thermal energy is added.
• Ensure that the graph effectively represents the relationship between thermal energy and molecular motion in helium gas.

Based on these points, you would want to choose the graph that indicates a positive correlation (more thermal energy equals more motion of molecules).

If you have described any specific features or patterns shown in the graphs, feel free to describe those, and I can help you refine your choice further!