Vocabulary for Standard 2 Objective 2, Biotic and Abiotic ...



Vocabulary for Standard 2 Objective 2, Biotic and Abiotic Factors of Ecosystems

Organism—a living thing

Ecosystem—all the living organisms in an area and the non-living things that affect them.

Biotic factors—the living organisms in an ecosystem

Examples—plants, animals, insects, bacteria, fungi, worms

Abiotic factors—the non-living conditions of the ecosystem that affect the living things

Examples—temperature, light levels, oxygen levels, nutrients, moisture levels, pH

Photosynthesis—plants take light energy from the sun and change it to chemical (food) energy. Energy enters the vast majority of all Earth’s ecosystems through photosynthesis.

pH—“P” “H”—a measure of how acidic or basic something is. The pH scale goes from 0 to 14. Battery acid has a pH near 0 and is very acidic. Oven cleaner has a pH near 13 and is very basic. Pure water has a pH of 7 and is neutral.

Qualitative Data—the data are in the form of words

Quantitative Data—the data are in the form of numbers

Comparison of Pond Water to River Water

| |Temperature |pH |Turbidity |Dissolved Oxygen |Observations |

|Pond |15 C |7.9 |High turbidity |5 |Shallow, water doesn’t |

| | | |(cloudy) | |seem to be moving |

|River |12 C |8.1 |Low turbidity |7 |Slow moving water. No |

| | | |(clear) | |rapids |

1. Which columns show qualitative data? Turbidity and observations

2. Which columns show quantitative data?

Temp., pH, dissolved oxygen

3. Does the table above give information about biotic or abiotic factors? Abiotic (there are no data related to living organisms)

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download