Understanding Buoyancy and Balloon Behavior

Why do helium balloons float in the air?

• Because helium is the same density as air

• Because helium is heavier than air

• Because helium is more colorful than air

• Because helium is less dense than air

What force is responsible for the upward movement of a helium balloon?

• Gravity

• Friction

• Buoyancy

• Magnetism

In the MIT experiment, why does the helium balloon move forward when the box is pushed?

• Because of a pressure imbalance in the box

• Because the air balloon pulls it forward

• Because the helium balloon is heavier

• Because the box is tilted

What happens to air particles in the box when it is pushed forward?

• They disappear

• They move to the front of the box

• They stay evenly distributed

• They gather at the back of the box

Why do balloons rise higher in the atmosphere?

• Because the air pressure is lower at higher altitudes

• Because the temperature is higher at higher altitudes

• Because the wind pushes them up

• Because the air is denser at higher altitudes