Effects of Temperature on Helium Balloons

The video demonstrates the effects of temperature on air pressure using a helium-filled mylar balloon. Inside a warm house, the balloon is stiff due to high kinetic energy and expanded gas molecules. When taken outside into cold temperatures, the balloon deflates as the gas molecules slow down, reducing air pressure. Returning indoors, the balloon re-inflates as the temperature rises, increasing kinetic energy and air pressure.

What is the initial temperature inside the house where the demonstration begins?

• 20 degrees Celsius

• 10 degrees Celsius

• 40 degrees Celsius

• 30 degrees Celsius

How does warm temperature affect the helium gas molecules inside the balloon?

• They become less energetic and contract.

• They remain the same.

• They freeze and stop moving.

• They become more energetic and expand.

What happens to the balloon when it is taken outside in cold temperatures?

• It bursts.

• It remains the same.

• It inflates more.

• It becomes saggy.

What is the temperature outside when the balloon is taken out?

• -15 degrees Celsius

• -10 degrees Celsius

• -4.4 degrees Celsius

• 0 degrees Celsius

Why does the balloon appear deflated in cold temperatures?

• The balloon material shrinks.

• The balloon is punctured.

• The kinetic energy of the gas decreases.

• The helium gas escapes.

What is the effect of decreased kinetic energy on the helium gas molecules?

• They disappear.

• They remain stationary.

• They move slower.

• They move faster.

What happens to the balloon when it is brought back inside the warm house?

• It remains deflated.

• It bursts.

• It returns to its original state.

• It becomes even more deflated.

What causes the balloon to return to its original state when brought back inside?

• The temperature change increases kinetic energy.

• The helium gas is replaced.

• The balloon is repaired.

• The air pressure outside decreases.

What is the main factor affecting the air pressure inside the balloon?

• The color of the balloon

• The type of gas used

• The size of the balloon

• The temperature of the environment

What is the key concept demonstrated in this video?

• The effect of humidity on balloons

• The impact of temperature on air pressure

• The role of gravity in balloon inflation

• The influence of wind on helium balloons