Earth Sciences

1. Reusing materials like paper, plastic, and glass to help the environment.
4. Patterns of stars that form imaginary pictures in the night sky.
6. Natural homes where plants and animals live and interact.
9. Mountains that sometimes explode and release hot lava and ash.
11. The study of daily changes in the atmosphere, including temperature and rain.
13. The top layer of the ground where plants grow and live.
14. Drawings that show places and how to get from one location to another.
15. The remains of ancient plants and animals that teach us about the past.

2. Shaking of the ground caused by the movement of Earth's plates.
3. Chains The transfer of energy from one living thing to another in nature.
5. System The sun, planets, and other objects that orbit around it.
7. Shining objects in the sky that twinkle at night.
8. The process of wearing away rocks and soil by wind, water, and ice.
10. Large bodies of saltwater where many plants and animals live.
11. Cycle The continuous process of water evaporating, forming clouds, and raining down.
12. Different types of hard materials that make up the Earth's surface.