Figure 12 shows a balloon filled with helium gas inside the balloon - AQA - GCSE Physics - Question 9 - 2018 - Paper 1
Question 9
Figure 12 shows a balloon filled with helium gas inside the balloon.
**09.1** Describe the movement of the particles of helium gas inside the balloon.
**09.2** Wha... show full transcript
Worked Solution & Example Answer:Figure 12 shows a balloon filled with helium gas inside the balloon - AQA - GCSE Physics - Question 9 - 2018 - Paper 1
Step 1
Describe the movement of the particles of helium gas inside the balloon.
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Answer
The particles of helium gas inside the balloon move with a range of speeds and are in constant motion. They travel in different directions and exhibit random motion, colliding with each other and the walls of the balloon.
Step 2
What name is given to the total kinetic energy and potential energy of all the particles of helium gas in the balloon?
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Answer
The total kinetic energy and potential energy of all the particles of helium gas in the balloon is referred to as internal energy.
Step 3
Write down the equation which links density, mass and volume.
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Answer
The equation that links density, mass, and volume is given by:
density = \frac{mass}{volume}
Step 4
Calculate the density of helium. Choose the correct unit from the box.
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Answer
To calculate the density of helium, we use the formula:
