Environmental Science

2. a common method for testing a hypothesis.
4. Anything that takes up space and has mass.
6. Occurs when we use our senses (smell, sight, hearing, taste, touch) or an extension of our senses (microscope, tape, recorder, X-ray machine, and thermometer) to record an event.
9. Example of atmospheric science.
10. combinations of atoms, ions, or molecules.
12. is a widely accepted, plausible generalization about fundamental concepts in science that explains why things happen.
13. formed when two or more atoms or ions are bonded chemically.
14. A statement that provides a possible answer to a question or an explanation for an observation that can be tested.
17. Refers to multiple atoms.
19. The opposite of an acid in that it accepts hydrogen ions in solution.
21. is the study of energy.
23. the energy that cannot be used to do useful work.
24. It comprises all types of water resources oceans, seas, lakes, rivers, streams, reservoir, polar icecaps, glaciers, and ground water.
28. The phenomena where the environment’s temperature continues to warm.
30. Everything that affects an organism during its lifetime.

1. It is the outer mantle of the solid earth.
3. The protective blanket of gases (N, O2, Ar, CO2, trace gases), surrounding the Earth.
5. tiny units that make up all matter in the universe, and energy is what holds the nucleus together.
7. A reaction when the newly formed chemical bonds contain more energy that was present in the compounds from which they were formed.
8. A process used to solve problems or develop an understanding of nature that involves testing possible answers.
11. Any compound that releases hydrogen ions (protons) in a solution.
15. Example of biological elements.
16. A substance that alters the rate of a reaction but does not consumed or altered in the process.
18. is a central characteristic of the scientific method.
20. The ability to do work.
22. It is done when an object is moved over a distance.
25. study of the interactions between life and its physical environment.
26. A pure substance
27. Evolution of Earth’s crust.
29. The vast majority of our people directly dependent on the nature resources of their country for their basic needs.