Science Final Review

2. ridge An underwater mountain chain where new ocean floor is formed.
6. resources Resources that cannot be replaced.
10. a chamber in an animal's heart that pumps blood out to the body.
11. a fossil fuel that forms from decomposed plant materials.
12. meaning "all lands"; the name of the single landmass that broke apart 200 million years ago and created the continents we know today.
13. system the system that transports blood and other fluids throughout the body.
14. A blood vessel that carries blood back to the heart..
15. the muscular organ of an animal that pumps blood throughout the body.
18. gas A fossil fuel in the gaseous state.
19. resource A natural resource that can be replaced.
21. tissue that brings oxygen and nutrients to the cells of the body and removes wastes from the cells of the body

1. fuels Coal, oil, natural gas, and other fuels that are ancient remains of plants and animals.
3. pressure the pressure that is exerted by the blood against the walls of blood vessels.
4. the major artery responsible for transporting blood from the heart to other parts of the human body.
5. a small blood vessel that transports nutrients and gases between the blood and tissues in an animal.
7. tectonics the theory that describes the movement and recycling of segments of Earth's crust, called tectonic plates
8. spreading The process by which molten material adds new oceanic crust to the ocean floor.
9. a liquid fossil fuel composed primarily of carbon that forms from decomposed plant and materials.
11. drift the gradual movement of the continents across the earth's surface through geological time.
16. a blood vessel that carries blood away from the heart.
17. resources Materials found in nature that are used by living things.
20. vessels tubes in the body through which blood flows.