1.   The balloon rose up into the air and then floated through the air.

2.   Another schemer wanted to fill the hull with ping pong balls, theorizing that the lead balloon would somehow rise.

3.   A hot-air balloon rises, for example, like a cork floating in water.

4.   During daylight hours a simple gas balloon is warmed by the sun, and its gas expands, causing the balloon to rise.

5.   The balloon rose steadily in the breezy air.

6.   The balloon rises, and from high above the desert north of Phoenix, washes stretch out in a green web over the stark landscape.

7.   The balloons rose into the pale blue sky.

8.   The crewless balloon rose into the sky and floated to the southeast, finally landing on Tuesday night in Algerian scrub desert.

9.   Warm air rises because it weighs less than cool air, just as a hot-air balloon rises.

10.   Will red, white, and blue balloons rise to the skies?