When someone rides a roller coaster or other thrill ride, they may experience some G-forces. What does that do to the body? And what happens when a person experiences a higher amount of Gs, like when flying a fighter jet? Readers engage with this topic and many more about the extreme nature of some of the forces on Earth, including those we interact with every day. Key physical science concepts such as push and pull, gravity, and thrust and drag are also included. A vibrant, colorful design engages readers with curricula-supporting content accompanied by graphic organizers.