Earth is a huge ball. Avery stands on one side of it, and her cousin stands on the other side.

The whole Earth, drawn from far away. Avery's ball is at the top, and her cousin's ball is at the bottom.

Avery's ball falls toward the ground under her feet.

Her cousin's ball falls toward the ground under her cousin's feet.

On the drawing, the two balls fall in different directions.

But both balls fall toward the same point, the center of the Earth.

The same drawing with the two paths added. Avery's ball at the top and her cousin's ball at the bottom both fall toward the middle of the drawing. Both arrows point at Earth's center.

On the drawing, Australia is at the bottom. So does her cousin hang upside down?

No, her cousin stands with her feet on the ground, just like Avery.

Earth pulls her cousin toward Earth's center, and the ground holds her up.

Rain in Australia falls toward Earth's center too, so the rain lands on the ground there.