Semester 1 Exam

Question 0

Characterizing any living thing on earth

Answer 0

organism

Question 1

What is ecology?

Answer 1

the study of interactions among organisms and their environment

Question 2

Why is water important to life?

Answer 2

All organisms need water to survive

Question 3

Where is most water found?

Answer 3

In the ocean (salt water)

Question 4

Describe the Troposphere:

Answer 4

• nearest earth
• weather happens here
• climate (typical weather/over span of time)

Question 5

Describe the stratosphere:

Answer 5

• above troposphere
• planes fly here, lower pressure
• ozone- absorbs UV rays

Question 6

Describe the mesosphere:

Answer 6

• extends to an altitude of about 80 km

- coldest layer of the atmosphere (temp. as low as -93 C)

Question 7

Describe the thermosphere:

Answer 7

• farthest from the Earth’s surface
• nitrogen and oxygen absorb solar radiation, resulting in temperatures above 2,000°C
• The air in the thermosphere is so thin that air particles rarely collide, so little heat is transferred (Would not feel hot to us)
• Nitrogen and oxygen atoms in the lower region of the thermosphere

Question 8

Lithosphere means…

Answer 8

land

Question 9

Atmosphere means…

Answer 9

air

Question 10

hydrosphere means…

Answer 10

water

Question 11

There is _____% land on Earth

Answer 11

75 percent

Question 12

Biosphere means…

Answer 12

life

Question 13

non-living

ex: rocks, soil, water, air, temperature, pH, oxygen, nitrogen

Answer 13

Abiotic

Question 14

living

ex: plants, animals, humans, bacteria, fungus, algae, Protozoa

Answer 14

Biotic

Question 15

one particular type of organism

Answer 15

species

Question 16

all organisms of species in a given area

Answer 16

population

Question 17

many populations in a given area

Answer 17

community

Question 18

environmental space/area in which organisms live

Answer 18

habitat

Question 19

Percentage composition of the air?

Answer 19

78% Nitrogen
21% Oxygen
1% Other

Question 20

use energy from the sun to make chemical energy (photosynthesis)

Answer 20

producers

Question 21

“eat” for energy

Answer 21

consumers

Question 22

meat eaters

Answer 22

carnivores

Question 23

eats plants, animals, everything

Answer 23

omnivores

Question 24

eats plants

Answer 24

herbivores

Question 25

eats dead things

Answer 25

scavengers

Question 26

decays

ex: bacteria, maggots, fungus

Answer 26

decomposer

Question 27

What are the trophic levels and Name the trophic levels in order:

Answer 27

The feeding level.

1. Source
2. Producer
3. Primary Consumer
4. Secondary Consumer
5. Tertiary Consumer
6. Fourth Consumer

Question 28

What is the source of all energy?

Answer 28

the Sun

Question 29

Makes their own food

Answer 29

autotrophs

Question 30

relies on others for food

Answer 30

heterotrophs

Question 31

substances move up in a food chain

Answer 31

biological magnification

Question 32

gas > liquid

Answer 32

condensation

Question 33

liquid > gas

Answer 33

evaporation

Question 34

water falls from sky

Answer 34

precipitation

Question 35

dissolved oxygen’s variables:

Answer 35

depends on temperature

6 ppm ^

Question 36

salinity measures…

Answer 36

salt content

Question 37

fresh water variables:

Answer 37

salinity of .5 ppt and below

Question 38

salt/ocean water should be…

Answer 38

35 ppt and ^

Question 39

brackish water should be between….

Answer 39

5 and 35 ppt

Question 40

Turbitity measures/is measured with?

Answer 40

• depth light can pass

- measure w/ a secchi disk

Question 41

phosphates and nitrates are…

Answer 41

harmful products to the environment and are run off from fertilizers

Question 42

• measures how quickly/slowly water changes pH

- water should be less likely to change

Answer 42

alkalinity

Question 43

What is ammonia?

Answer 43

poisonous; comes from animal waste

Question 44

bacteria from feces

Answer 44

coliforms