| A | B |
|---|
| 1. Abiotic Factors | Non-living factors in an ecosystem |
| 2. Absolute Zero | The temperature at which all matter will stop -273.15ْC or 0 K. |
| 3. Acceleration | The rate at which velocity changes. |
| 4. Active transport | The use of energy to move materials through the cell membrane. |
| 5. Adaptation | A mutation that helps increase an organisms chance for survival. |
| 6. Alleles | An alternate form of a gene. |
| 7. Alternating current | A current that flows in both directions. |
| 8. Amino acids | 3 letter codes that make proteins. |
| 9. Anaphase | The stage in mitosis where the chromosomes move to opposite ends of the cell. |
| 10. Animal cell | A cell that is round, contains lysosmes and has a small vacuole. |
| 11. Archimedes principle | The amount of fluid displaced is equal to the volume of an object placed in the fluid. |
| 12. Asteroids | rocky object smaller than a planet that orbits the sun |
| 13. Atmosphere | An envelope of gas that surrounds a planet. |
| 14. Atmospheric Pressure | The pressure pushing down on us from the atmosphere. |
| 15. Atom | The smallest particle of matter it contains protons, neutrons and Electrons. |
| 16. Autotroph | an organism that makes its own food |
| 17. Battery | A device that converts chemical electrical energy |
| 18. Bias | A prejudice that keeps you from being impartial to the results of an experiment |
| 19. Big Bang Theory | The theory of how the universe formed |
| 20. Biotic factors | Living factors in an ecosystem |
| 21. Boiling point | The temperature at which a liquid changes to a gas |
| 22. Brownian motion | The movement of tiny particles |
| 23. Buoyancy | The movement of an object to float |
| 24. Bouyant force | The force pushing up on a n object that allows it to float |
| 25. Aquifer | An underground reservoir of water |
